Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector

L. Adamczyk, J. K. Adkins, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, I. Alekseev, J. Alford, C. D. Anson, A. Aparin, D. Arkhipkin, E. C. Aschenauer, G. S. Averichev, A. Banerjee, D. R. Beavis, R. Bellwied, A. Bhasin, A. K. Bhati, P. Bhattarai, H. Bichsel, J. Bielcik & 338 others J. Bielcikova, L. C. Bland, I. G. Bordyuzhin, W. Borowski, J. Bouchet, A. V. Brandin, S. G. Brovko, S. Bültmann, I. Bunzarov, T. P. Burton, J. Butterworth, H. Caines, M. Calderón De La Barca Sánchez, D. Cebra, R. Cendejas, M. C. Cervantes, P. Chaloupka, Z. Chang, S. Chattopadhyay, H. F. Chen, J. H. Chen, L. Chen, J. Cheng, Michael G. Cherney, A. Chikanian, W. Christie, J. Chwastowski, M. J M Codrington, G. Contin, J. G. Cramer, H. J. Crawford, X. Cui, S. Das, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, J. Deng, A. A. Derevschikov, R. Derradi De Souza, S. Dhamija, B. Di Ruzza, L. Didenko, C. Dilks, F. Ding, P. Djawotho, X. Dong, J. L. Drachenberg, J. E. Draper, C. M. Du, L. E. Dunkelberger, J. C. Dunlop, L. G. Efimov, J. Engelage, K. S. Engle, G. Eppley, L. Eun, O. Evdokimov, O. Eyser, R. Fatemi, S. Fazio, J. Fedorisin, P. Filip, E. Finch, Y. Fisyak, C. E. Flores, C. A. Gagliardi, D. R. Gangadharan, D. Garand, F. Geurts, A. Gibson, M. Girard, S. Gliske, L. Greiner, D. Grosnick, D. S. Gunarathne, Y. Guo, A. Gupta, S. Gupta, W. Guryn, B. Haag, A. Hamed, L. X. Han, R. Haque, J. W. Harris, S. Heppelmann, A. Hirsch, G. W. Hoffmann, D. J. Hofman, S. Horvat, B. Huang, H. Z. Huang, X. Huang, P. Huck, T. J. Humanic, G. Igo, W. W. Jacobs, H. Jang, E. G. Judd, S. Kabana, D. Kalinkin, K. Kang, K. Kauder, H. W. Ke, D. Keane, A. Kechechyan, A. Kesich, Z. H. Khan, D. P. Kikola, I. Kisel, A. Kisiel, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. K. Kosarzewski, L. Kotchenda, A. F. Kraishan, P. Kravtsov, K. Krueger, I. Kulakov, L. Kumar, R. A. Kycia, M. A C Lamont, J. M. Landgraf, K. D. Landry, J. Lauret, A. Lebedev, R. Lednicky, J. H. Lee, M. J. Levine, C. Li, W. Li, X. Li, X. Li, Y. Li, Z. M. Li, M. A. Lisa, F. Liu, T. Ljubicic, W. J. Llope, M. Lomnitz, R. S. Longacre, X. Luo, G. L. Ma, Y. G. Ma, D. M M D Madagodagettige Don, D. P. Mahapatra, R. Majka, S. Margetis, C. Markert, H. Masui, H. S. Matis, D. McDonald, T. S. McShane, N. G. Minaev, S. Mioduszewski, B. Mohanty, M. M. Mondal, D. A. Morozov, M. K. Mustafa, B. K. Nandi, Md Nasim, T. K. Nayak, J. M. Nelson, G. Nigmatkulov, L. V. Nogach, S. Y. Noh, J. Novak, S. B. Nurushev, G. Odyniec, A. Ogawa, K. Oh, A. Ohlson, V. Okorokov, E. W. Oldag, D. L. Olvitt, M. Pachr, B. S. Page, S. K. Pal, Y. X. Pan, Y. Pandit, Y. Panebratsev, T. Pawlak, B. Pawlik, H. Pei, C. Perkins, W. Peryt, P. Pile, M. Planinic, J. Pluta, N. Poljak, K. Poniatowska, J. Porter, A. M. Poskanzer, N. K. Pruthi, M. Przybycien, P. R. Pujahari, J. Putschke, H. Qiu, A. Quintero, S. Ramachandran, R. Raniwala, S. Raniwala, R. L. Ray, C. K. Riley, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, J. F. Ross, A. Roy, L. Ruan, J. Rusnak, O. Rusnakova, N. R. Sahoo, P. K. Sahu, I. Sakrejda, S. Salur, J. Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R. P. Scharenberg, A. M. Schmah, W. B. Schmidke, N. Schmitz, Janet E. Seger, P. Seyboth, N. Shah, E. Shahaliev, P. V. Shanmuganathan, M. Shao, B. Sharma, W. Q. Shen, S. S. Shi, Q. Y. Shou, E. P. Sichtermann, R. N. Singaraju, M. J. Skoby, D. Smirnov, N. Smirnov, D. Solanki, P. Sorensen, H. M. Spinka, B. Srivastava, T. D S Stanislaus, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, M. Sumbera, X. Sun, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J M Symons, M. A. Szelezniak, J. Takahashi, A. H. Tang, Z. Tang, T. Tarnowsky, J. H. Thomas, A. R. Timmins, D. Tlusty, M. Tokarev, S. Trentalange, R. E. Tribble, P. Tribedy, B. A. Trzeciak, O. D. Tsai, J. Turnau, T. Ullrich, D. G. Underwood, G. Van Buren, G. Van Nieuwenhuizen, M. Vandenbroucke, J. A. Vanfossen, R. Varma, G. M S Vasconcelos, A. N. Vasiliev, R. Vertesi, F. Videbæk, Y. P. Viyogi, S. Vokal, A. Vossen, M. Wada, F. Wang, G. Wang, H. Wang, J. S. Wang, X. L. Wang, Y. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, H. Wieman, S. W. Wissink, R. Witt, Y. F. Wu, Z. Xiao, W. Xie, K. Xin, H. Xu, J. Xu, N. Xu, Q. H. Xu, Y. Xu, Z. Xu, W. Yan, C. Yang, Y. Yang, Y. Yang, Z. Ye, P. Yepes, L. Yi, K. Yip, I. K. Yoo, N. Yu, Y. Zawisza, H. Zbroszczyk, W. Zha, J. B. Zhang, J. L. Zhang, S. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, F. Zhao, J. Zhao, C. Zhong, X. Zhu, Y. H. Zhu, Y. Zoulkarneeva, M. Zyzak

Research output: Contribution to journalArticle

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Abstract

We present results of analyses of two-pion interferometry in Au+Au collisions at sNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV measured in the STAR detector as part of the BNL Relativistic Heavy Ion Collider Beam Energy Scan program. The extracted correlation lengths (Hanbury-Brown-Twiss radii) are studied as a function of beam energy, azimuthal angle relative to the reaction plane, centrality, and transverse mass (mT) of the particles. The azimuthal analysis allows extraction of the eccentricity of the entire fireball at kinetic freeze-out. The energy dependence of this observable is expected to be sensitive to changes in the equation of state. A new global fit method is studied as an alternate method to directly measure the parameters in the azimuthal analysis. The eccentricity shows a monotonic decrease with beam energy that is qualitatively consistent with the trend from all model predictions and quantitatively consistent with a hadronic transport model.

Original languageEnglish
Article number014904
JournalPhysical Review C - Nuclear Physics
Volume92
Issue number1
DOIs
StatePublished - Jul 10 2015

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eccentricity
ionic collisions
interferometry
pions
detectors
fireballs
energy
heavy ions
equations of state
trends
collisions
radii
kinetics
predictions

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector. / Adamczyk, L.; Adkins, J. K.; Agakishiev, G.; Aggarwal, M. M.; Ahammed, Z.; Alekseev, I.; Alford, J.; Anson, C. D.; Aparin, A.; Arkhipkin, D.; Aschenauer, E. C.; Averichev, G. S.; Banerjee, A.; Beavis, D. R.; Bellwied, R.; Bhasin, A.; Bhati, A. K.; Bhattarai, P.; Bichsel, H.; Bielcik, J.; Bielcikova, J.; Bland, L. C.; Bordyuzhin, I. G.; Borowski, W.; Bouchet, J.; Brandin, A. V.; Brovko, S. G.; Bültmann, S.; Bunzarov, I.; Burton, T. P.; Butterworth, J.; Caines, H.; Calderón De La Barca Sánchez, M.; Cebra, D.; Cendejas, R.; Cervantes, M. C.; Chaloupka, P.; Chang, Z.; Chattopadhyay, S.; Chen, H. F.; Chen, J. H.; Chen, L.; Cheng, J.; Cherney, Michael G.; Chikanian, A.; Christie, W.; Chwastowski, J.; Codrington, M. J M; Contin, G.; Cramer, J. G.; Crawford, H. J.; Cui, X.; Das, S.; Davila Leyva, A.; De Silva, L. C.; Debbe, R. R.; Dedovich, T. G.; Deng, J.; Derevschikov, A. A.; Derradi De Souza, R.; Dhamija, S.; Di Ruzza, B.; Didenko, L.; Dilks, C.; Ding, F.; Djawotho, P.; Dong, X.; Drachenberg, J. L.; Draper, J. E.; Du, C. M.; Dunkelberger, L. E.; Dunlop, J. C.; Efimov, L. G.; Engelage, J.; Engle, K. S.; Eppley, G.; Eun, L.; Evdokimov, O.; Eyser, O.; Fatemi, R.; Fazio, S.; Fedorisin, J.; Filip, P.; Finch, E.; Fisyak, Y.; Flores, C. E.; Gagliardi, C. A.; Gangadharan, D. R.; Garand, D.; Geurts, F.; Gibson, A.; Girard, M.; Gliske, S.; Greiner, L.; Grosnick, D.; Gunarathne, D. S.; Guo, Y.; Gupta, A.; Gupta, S.; Guryn, W.; Haag, B.; Hamed, A.; Han, L. X.; Haque, R.; Harris, J. W.; Heppelmann, S.; Hirsch, A.; Hoffmann, G. W.; Hofman, D. J.; Horvat, S.; Huang, B.; Huang, H. Z.; Huang, X.; Huck, P.; Humanic, T. J.; Igo, G.; Jacobs, W. W.; Jang, H.; Judd, E. G.; Kabana, S.; Kalinkin, D.; Kang, K.; Kauder, K.; Ke, H. W.; Keane, D.; Kechechyan, A.; Kesich, A.; Khan, Z. H.; Kikola, D. P.; Kisel, I.; Kisiel, A.; Koetke, D. D.; Kollegger, T.; Konzer, J.; Koralt, I.; Kosarzewski, L. K.; Kotchenda, L.; Kraishan, A. F.; Kravtsov, P.; Krueger, K.; Kulakov, I.; Kumar, L.; Kycia, R. A.; Lamont, M. A C; Landgraf, J. M.; Landry, K. D.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, J. H.; Levine, M. J.; Li, C.; Li, W.; Li, X.; Li, X.; Li, Y.; Li, Z. M.; Lisa, M. A.; Liu, F.; Ljubicic, T.; Llope, W. J.; Lomnitz, M.; Longacre, R. S.; Luo, X.; Ma, G. L.; Ma, Y. G.; Madagodagettige Don, D. M M D; Mahapatra, D. P.; Majka, R.; Margetis, S.; Markert, C.; Masui, H.; Matis, H. S.; McDonald, D.; McShane, T. S.; Minaev, N. G.; Mioduszewski, S.; Mohanty, B.; Mondal, M. M.; Morozov, D. A.; Mustafa, M. K.; Nandi, B. K.; Nasim, Md; Nayak, T. K.; Nelson, J. M.; Nigmatkulov, G.; Nogach, L. V.; Noh, S. Y.; Novak, J.; Nurushev, S. B.; Odyniec, G.; Ogawa, A.; Oh, K.; Ohlson, A.; Okorokov, V.; Oldag, E. W.; Olvitt, D. L.; Pachr, M.; Page, B. S.; Pal, S. K.; Pan, Y. X.; Pandit, Y.; Panebratsev, Y.; Pawlak, T.; Pawlik, B.; Pei, H.; Perkins, C.; Peryt, W.; Pile, P.; Planinic, M.; Pluta, J.; Poljak, N.; Poniatowska, K.; Porter, J.; Poskanzer, A. M.; Pruthi, N. K.; Przybycien, M.; Pujahari, P. R.; Putschke, J.; Qiu, H.; Quintero, A.; Ramachandran, S.; Raniwala, R.; Raniwala, S.; Ray, R. L.; Riley, C. K.; Ritter, H. G.; Roberts, J. B.; Rogachevskiy, O. V.; Romero, J. L.; Ross, J. F.; Roy, A.; Ruan, L.; Rusnak, J.; Rusnakova, O.; Sahoo, N. R.; Sahu, P. K.; Sakrejda, I.; Salur, S.; Sandweiss, J.; Sangaline, E.; Sarkar, A.; Schambach, J.; Scharenberg, R. P.; Schmah, A. M.; Schmidke, W. B.; Schmitz, N.; Seger, Janet E.; Seyboth, P.; Shah, N.; Shahaliev, E.; Shanmuganathan, P. V.; Shao, M.; Sharma, B.; Shen, W. Q.; Shi, S. S.; Shou, Q. Y.; Sichtermann, E. P.; Singaraju, R. N.; Skoby, M. J.; Smirnov, D.; Smirnov, N.; Solanki, D.; Sorensen, P.; Spinka, H. M.; Srivastava, B.; Stanislaus, T. D S; Stevens, J. R.; Stock, R.; Strikhanov, M.; Stringfellow, B.; Sumbera, M.; Sun, X.; Sun, X. M.; Sun, Y.; Sun, Z.; Surrow, B.; Svirida, D. N.; Symons, T. J M; Szelezniak, M. A.; Takahashi, J.; Tang, A. H.; Tang, Z.; Tarnowsky, T.; Thomas, J. H.; Timmins, A. R.; Tlusty, D.; Tokarev, M.; Trentalange, S.; Tribble, R. E.; Tribedy, P.; Trzeciak, B. A.; Tsai, O. D.; Turnau, J.; Ullrich, T.; Underwood, D. G.; Van Buren, G.; Van Nieuwenhuizen, G.; Vandenbroucke, M.; Vanfossen, J. A.; Varma, R.; Vasconcelos, G. M S; Vasiliev, A. N.; Vertesi, R.; Videbæk, F.; Viyogi, Y. P.; Vokal, S.; Vossen, A.; Wada, M.; Wang, F.; Wang, G.; Wang, H.; Wang, J. S.; Wang, X. L.; Wang, Y.; Wang, Y.; Webb, G.; Webb, J. C.; Westfall, G. D.; Wieman, H.; Wissink, S. W.; Witt, R.; Wu, Y. F.; Xiao, Z.; Xie, W.; Xin, K.; Xu, H.; Xu, J.; Xu, N.; Xu, Q. H.; Xu, Y.; Xu, Z.; Yan, W.; Yang, C.; Yang, Y.; Yang, Y.; Ye, Z.; Yepes, P.; Yi, L.; Yip, K.; Yoo, I. K.; Yu, N.; Zawisza, Y.; Zbroszczyk, H.; Zha, W.; Zhang, J. B.; Zhang, J. L.; Zhang, S.; Zhang, X. P.; Zhang, Y.; Zhang, Z. P.; Zhao, F.; Zhao, J.; Zhong, C.; Zhu, X.; Zhu, Y. H.; Zoulkarneeva, Y.; Zyzak, M.

In: Physical Review C - Nuclear Physics, Vol. 92, No. 1, 014904, 10.07.2015.

Research output: Contribution to journalArticle

Adamczyk, L, Adkins, JK, Agakishiev, G, Aggarwal, MM, Ahammed, Z, Alekseev, I, Alford, J, Anson, CD, Aparin, A, Arkhipkin, D, Aschenauer, EC, Averichev, GS, Banerjee, A, Beavis, DR, Bellwied, R, Bhasin, A, Bhati, AK, Bhattarai, P, Bichsel, H, Bielcik, J, Bielcikova, J, Bland, LC, Bordyuzhin, IG, Borowski, W, Bouchet, J, Brandin, AV, Brovko, SG, Bültmann, S, Bunzarov, I, Burton, TP, Butterworth, J, Caines, H, Calderón De La Barca Sánchez, M, Cebra, D, Cendejas, R, Cervantes, MC, Chaloupka, P, Chang, Z, Chattopadhyay, S, Chen, HF, Chen, JH, Chen, L, Cheng, J, Cherney, MG, Chikanian, A, Christie, W, Chwastowski, J, Codrington, MJM, Contin, G, Cramer, JG, Crawford, HJ, Cui, X, Das, S, Davila Leyva, A, De Silva, LC, Debbe, RR, Dedovich, TG, Deng, J, Derevschikov, AA, Derradi De Souza, R, Dhamija, S, Di Ruzza, B, Didenko, L, Dilks, C, Ding, F, Djawotho, P, Dong, X, Drachenberg, JL, Draper, JE, Du, CM, Dunkelberger, LE, Dunlop, JC, Efimov, LG, Engelage, J, Engle, KS, Eppley, G, Eun, L, Evdokimov, O, Eyser, O, Fatemi, R, Fazio, S, Fedorisin, J, Filip, P, Finch, E, Fisyak, Y, Flores, CE, Gagliardi, CA, Gangadharan, DR, Garand, D, Geurts, F, Gibson, A, Girard, M, Gliske, S, Greiner, L, Grosnick, D, Gunarathne, DS, Guo, Y, Gupta, A, Gupta, S, Guryn, W, Haag, B, Hamed, A, Han, LX, Haque, R, Harris, JW, Heppelmann, S, Hirsch, A, Hoffmann, GW, Hofman, DJ, Horvat, S, Huang, B, Huang, HZ, Huang, X, Huck, P, Humanic, TJ, Igo, G, Jacobs, WW, Jang, H, Judd, EG, Kabana, S, Kalinkin, D, Kang, K, Kauder, K, Ke, HW, Keane, D, Kechechyan, A, Kesich, A, Khan, ZH, Kikola, DP, Kisel, I, Kisiel, A, Koetke, DD, Kollegger, T, Konzer, J, Koralt, I, Kosarzewski, LK, Kotchenda, L, Kraishan, AF, Kravtsov, P, Krueger, K, Kulakov, I, Kumar, L, Kycia, RA, Lamont, MAC, Landgraf, JM, Landry, KD, Lauret, J, Lebedev, A, Lednicky, R, Lee, JH, Levine, MJ, Li, C, Li, W, Li, X, Li, X, Li, Y, Li, ZM, Lisa, MA, Liu, F, Ljubicic, T, Llope, WJ, Lomnitz, M, Longacre, RS, Luo, X, Ma, GL, Ma, YG, Madagodagettige Don, DMMD, Mahapatra, DP, Majka, R, Margetis, S, Markert, C, Masui, H, Matis, HS, McDonald, D, McShane, TS, Minaev, NG, Mioduszewski, S, Mohanty, B, Mondal, MM, Morozov, DA, Mustafa, MK, Nandi, BK, Nasim, M, Nayak, TK, Nelson, JM, Nigmatkulov, G, Nogach, LV, Noh, SY, Novak, J, Nurushev, SB, Odyniec, G, Ogawa, A, Oh, K, Ohlson, A, Okorokov, V, Oldag, EW, Olvitt, DL, Pachr, M, Page, BS, Pal, SK, Pan, YX, Pandit, Y, Panebratsev, Y, Pawlak, T, Pawlik, B, Pei, H, Perkins, C, Peryt, W, Pile, P, Planinic, M, Pluta, J, Poljak, N, Poniatowska, K, Porter, J, Poskanzer, AM, Pruthi, NK, Przybycien, M, Pujahari, PR, Putschke, J, Qiu, H, Quintero, A, Ramachandran, S, Raniwala, R, Raniwala, S, Ray, RL, Riley, CK, Ritter, HG, Roberts, JB, Rogachevskiy, OV, Romero, JL, Ross, JF, Roy, A, Ruan, L, Rusnak, J, Rusnakova, O, Sahoo, NR, Sahu, PK, Sakrejda, I, Salur, S, Sandweiss, J, Sangaline, E, Sarkar, A, Schambach, J, Scharenberg, RP, Schmah, AM, Schmidke, WB, Schmitz, N, Seger, JE, Seyboth, P, Shah, N, Shahaliev, E, Shanmuganathan, PV, Shao, M, Sharma, B, Shen, WQ, Shi, SS, Shou, QY, Sichtermann, EP, Singaraju, RN, Skoby, MJ, Smirnov, D, Smirnov, N, Solanki, D, Sorensen, P, Spinka, HM, Srivastava, B, Stanislaus, TDS, Stevens, JR, Stock, R, Strikhanov, M, Stringfellow, B, Sumbera, M, Sun, X, Sun, XM, Sun, Y, Sun, Z, Surrow, B, Svirida, DN, Symons, TJM, Szelezniak, MA, Takahashi, J, Tang, AH, Tang, Z, Tarnowsky, T, Thomas, JH, Timmins, AR, Tlusty, D, Tokarev, M, Trentalange, S, Tribble, RE, Tribedy, P, Trzeciak, BA, Tsai, OD, Turnau, J, Ullrich, T, Underwood, DG, Van Buren, G, Van Nieuwenhuizen, G, Vandenbroucke, M, Vanfossen, JA, Varma, R, Vasconcelos, GMS, Vasiliev, AN, Vertesi, R, Videbæk, F, Viyogi, YP, Vokal, S, Vossen, A, Wada, M, Wang, F, Wang, G, Wang, H, Wang, JS, Wang, XL, Wang, Y, Wang, Y, Webb, G, Webb, JC, Westfall, GD, Wieman, H, Wissink, SW, Witt, R, Wu, YF, Xiao, Z, Xie, W, Xin, K, Xu, H, Xu, J, Xu, N, Xu, QH, Xu, Y, Xu, Z, Yan, W, Yang, C, Yang, Y, Yang, Y, Ye, Z, Yepes, P, Yi, L, Yip, K, Yoo, IK, Yu, N, Zawisza, Y, Zbroszczyk, H, Zha, W, Zhang, JB, Zhang, JL, Zhang, S, Zhang, XP, Zhang, Y, Zhang, ZP, Zhao, F, Zhao, J, Zhong, C, Zhu, X, Zhu, YH, Zoulkarneeva, Y & Zyzak, M 2015, 'Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector', Physical Review C - Nuclear Physics, vol. 92, no. 1, 014904. https://doi.org/10.1103/PhysRevC.92.014904
Adamczyk, L. ; Adkins, J. K. ; Agakishiev, G. ; Aggarwal, M. M. ; Ahammed, Z. ; Alekseev, I. ; Alford, J. ; Anson, C. D. ; Aparin, A. ; Arkhipkin, D. ; Aschenauer, E. C. ; Averichev, G. S. ; Banerjee, A. ; Beavis, D. R. ; Bellwied, R. ; Bhasin, A. ; Bhati, A. K. ; Bhattarai, P. ; Bichsel, H. ; Bielcik, J. ; Bielcikova, J. ; Bland, L. C. ; Bordyuzhin, I. G. ; Borowski, W. ; Bouchet, J. ; Brandin, A. V. ; Brovko, S. G. ; Bültmann, S. ; Bunzarov, I. ; Burton, T. P. ; Butterworth, J. ; Caines, H. ; Calderón De La Barca Sánchez, M. ; Cebra, D. ; Cendejas, R. ; Cervantes, M. C. ; Chaloupka, P. ; Chang, Z. ; Chattopadhyay, S. ; Chen, H. F. ; Chen, J. H. ; Chen, L. ; Cheng, J. ; Cherney, Michael G. ; Chikanian, A. ; Christie, W. ; Chwastowski, J. ; Codrington, M. J M ; Contin, G. ; Cramer, J. G. ; Crawford, H. J. ; Cui, X. ; Das, S. ; Davila Leyva, A. ; De Silva, L. C. ; Debbe, R. R. ; Dedovich, T. G. ; Deng, J. ; Derevschikov, A. A. ; Derradi De Souza, R. ; Dhamija, S. ; Di Ruzza, B. ; Didenko, L. ; Dilks, C. ; Ding, F. ; Djawotho, P. ; Dong, X. ; Drachenberg, J. L. ; Draper, J. E. ; Du, C. M. ; Dunkelberger, L. E. ; Dunlop, J. C. ; Efimov, L. G. ; Engelage, J. ; Engle, K. S. ; Eppley, G. ; Eun, L. ; Evdokimov, O. ; Eyser, O. ; Fatemi, R. ; Fazio, S. ; Fedorisin, J. ; Filip, P. ; Finch, E. ; Fisyak, Y. ; Flores, C. E. ; Gagliardi, C. A. ; Gangadharan, D. R. ; Garand, D. ; Geurts, F. ; Gibson, A. ; Girard, M. ; Gliske, S. ; Greiner, L. ; Grosnick, D. ; Gunarathne, D. S. ; Guo, Y. ; Gupta, A. ; Gupta, S. ; Guryn, W. ; Haag, B. ; Hamed, A. ; Han, L. X. ; Haque, R. ; Harris, J. W. ; Heppelmann, S. ; Hirsch, A. ; Hoffmann, G. W. ; Hofman, D. J. ; Horvat, S. ; Huang, B. ; Huang, H. Z. ; Huang, X. ; Huck, P. ; Humanic, T. J. ; Igo, G. ; Jacobs, W. W. ; Jang, H. ; Judd, E. G. ; Kabana, S. ; Kalinkin, D. ; Kang, K. ; Kauder, K. ; Ke, H. W. ; Keane, D. ; Kechechyan, A. ; Kesich, A. ; Khan, Z. H. ; Kikola, D. P. ; Kisel, I. ; Kisiel, A. ; Koetke, D. D. ; Kollegger, T. ; Konzer, J. ; Koralt, I. ; Kosarzewski, L. K. ; Kotchenda, L. ; Kraishan, A. F. ; Kravtsov, P. ; Krueger, K. ; Kulakov, I. ; Kumar, L. ; Kycia, R. A. ; Lamont, M. A C ; Landgraf, J. M. ; Landry, K. D. ; Lauret, J. ; Lebedev, A. ; Lednicky, R. ; Lee, J. H. ; Levine, M. J. ; Li, C. ; Li, W. ; Li, X. ; Li, X. ; Li, Y. ; Li, Z. M. ; Lisa, M. A. ; Liu, F. ; Ljubicic, T. ; Llope, W. J. ; Lomnitz, M. ; Longacre, R. S. ; Luo, X. ; Ma, G. L. ; Ma, Y. G. ; Madagodagettige Don, D. M M D ; Mahapatra, D. P. ; Majka, R. ; Margetis, S. ; Markert, C. ; Masui, H. ; Matis, H. S. ; McDonald, D. ; McShane, T. S. ; Minaev, N. G. ; Mioduszewski, S. ; Mohanty, B. ; Mondal, M. M. ; Morozov, D. A. ; Mustafa, M. K. ; Nandi, B. K. ; Nasim, Md ; Nayak, T. K. ; Nelson, J. M. ; Nigmatkulov, G. ; Nogach, L. V. ; Noh, S. Y. ; Novak, J. ; Nurushev, S. B. ; Odyniec, G. ; Ogawa, A. ; Oh, K. ; Ohlson, A. ; Okorokov, V. ; Oldag, E. W. ; Olvitt, D. L. ; Pachr, M. ; Page, B. S. ; Pal, S. K. ; Pan, Y. X. ; Pandit, Y. ; Panebratsev, Y. ; Pawlak, T. ; Pawlik, B. ; Pei, H. ; Perkins, C. ; Peryt, W. ; Pile, P. ; Planinic, M. ; Pluta, J. ; Poljak, N. ; Poniatowska, K. ; Porter, J. ; Poskanzer, A. M. ; Pruthi, N. K. ; Przybycien, M. ; Pujahari, P. R. ; Putschke, J. ; Qiu, H. ; Quintero, A. ; Ramachandran, S. ; Raniwala, R. ; Raniwala, S. ; Ray, R. L. ; Riley, C. K. ; Ritter, H. G. ; Roberts, J. B. ; Rogachevskiy, O. V. ; Romero, J. L. ; Ross, J. F. ; Roy, A. ; Ruan, L. ; Rusnak, J. ; Rusnakova, O. ; Sahoo, N. R. ; Sahu, P. K. ; Sakrejda, I. ; Salur, S. ; Sandweiss, J. ; Sangaline, E. ; Sarkar, A. ; Schambach, J. ; Scharenberg, R. P. ; Schmah, A. M. ; Schmidke, W. B. ; Schmitz, N. ; Seger, Janet E. ; Seyboth, P. ; Shah, N. ; Shahaliev, E. ; Shanmuganathan, P. V. ; Shao, M. ; Sharma, B. ; Shen, W. Q. ; Shi, S. S. ; Shou, Q. Y. ; Sichtermann, E. P. ; Singaraju, R. N. ; Skoby, M. J. ; Smirnov, D. ; Smirnov, N. ; Solanki, D. ; Sorensen, P. ; Spinka, H. M. ; Srivastava, B. ; Stanislaus, T. D S ; Stevens, J. R. ; Stock, R. ; Strikhanov, M. ; Stringfellow, B. ; Sumbera, M. ; Sun, X. ; Sun, X. M. ; Sun, Y. ; Sun, Z. ; Surrow, B. ; Svirida, D. N. ; Symons, T. J M ; Szelezniak, M. A. ; Takahashi, J. ; Tang, A. H. ; Tang, Z. ; Tarnowsky, T. ; Thomas, J. H. ; Timmins, A. R. ; Tlusty, D. ; Tokarev, M. ; Trentalange, S. ; Tribble, R. E. ; Tribedy, P. ; Trzeciak, B. A. ; Tsai, O. D. ; Turnau, J. ; Ullrich, T. ; Underwood, D. G. ; Van Buren, G. ; Van Nieuwenhuizen, G. ; Vandenbroucke, M. ; Vanfossen, J. A. ; Varma, R. ; Vasconcelos, G. M S ; Vasiliev, A. N. ; Vertesi, R. ; Videbæk, F. ; Viyogi, Y. P. ; Vokal, S. ; Vossen, A. ; Wada, M. ; Wang, F. ; Wang, G. ; Wang, H. ; Wang, J. S. ; Wang, X. L. ; Wang, Y. ; Wang, Y. ; Webb, G. ; Webb, J. C. ; Westfall, G. D. ; Wieman, H. ; Wissink, S. W. ; Witt, R. ; Wu, Y. F. ; Xiao, Z. ; Xie, W. ; Xin, K. ; Xu, H. ; Xu, J. ; Xu, N. ; Xu, Q. H. ; Xu, Y. ; Xu, Z. ; Yan, W. ; Yang, C. ; Yang, Y. ; Yang, Y. ; Ye, Z. ; Yepes, P. ; Yi, L. ; Yip, K. ; Yoo, I. K. ; Yu, N. ; Zawisza, Y. ; Zbroszczyk, H. ; Zha, W. ; Zhang, J. B. ; Zhang, J. L. ; Zhang, S. ; Zhang, X. P. ; Zhang, Y. ; Zhang, Z. P. ; Zhao, F. ; Zhao, J. ; Zhong, C. ; Zhu, X. ; Zhu, Y. H. ; Zoulkarneeva, Y. ; Zyzak, M. / Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector. In: Physical Review C - Nuclear Physics. 2015 ; Vol. 92, No. 1.
@article{d78843add4564401bab6e625f647ed3b,
title = "Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector",
abstract = "We present results of analyses of two-pion interferometry in Au+Au collisions at sNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV measured in the STAR detector as part of the BNL Relativistic Heavy Ion Collider Beam Energy Scan program. The extracted correlation lengths (Hanbury-Brown-Twiss radii) are studied as a function of beam energy, azimuthal angle relative to the reaction plane, centrality, and transverse mass (mT) of the particles. The azimuthal analysis allows extraction of the eccentricity of the entire fireball at kinetic freeze-out. The energy dependence of this observable is expected to be sensitive to changes in the equation of state. A new global fit method is studied as an alternate method to directly measure the parameters in the azimuthal analysis. The eccentricity shows a monotonic decrease with beam energy that is qualitatively consistent with the trend from all model predictions and quantitatively consistent with a hadronic transport model.",
author = "L. Adamczyk and Adkins, {J. K.} and G. Agakishiev and Aggarwal, {M. M.} and Z. Ahammed and I. Alekseev and J. Alford and Anson, {C. D.} and A. Aparin and D. Arkhipkin and Aschenauer, {E. C.} and Averichev, {G. S.} and A. Banerjee and Beavis, {D. R.} and R. Bellwied and A. Bhasin and Bhati, {A. K.} and P. Bhattarai and H. Bichsel and J. Bielcik and J. Bielcikova and Bland, {L. C.} and Bordyuzhin, {I. G.} and W. Borowski and J. Bouchet and Brandin, {A. V.} and Brovko, {S. G.} and S. B{\"u}ltmann and I. Bunzarov and Burton, {T. P.} and J. Butterworth and H. Caines and {Calder{\'o}n De La Barca S{\'a}nchez}, M. and D. Cebra and R. Cendejas and Cervantes, {M. C.} and P. Chaloupka and Z. Chang and S. Chattopadhyay and Chen, {H. F.} and Chen, {J. H.} and L. Chen and J. Cheng and Cherney, {Michael G.} and A. Chikanian and W. Christie and J. Chwastowski and Codrington, {M. J M} and G. Contin and Cramer, {J. G.} and Crawford, {H. J.} and X. Cui and S. Das and {Davila Leyva}, A. and {De Silva}, {L. C.} and Debbe, {R. R.} and Dedovich, {T. G.} and J. Deng and Derevschikov, {A. A.} and {Derradi De Souza}, R. and S. Dhamija and {Di Ruzza}, B. and L. Didenko and C. Dilks and F. Ding and P. Djawotho and X. Dong and Drachenberg, {J. L.} and Draper, {J. E.} and Du, {C. M.} and Dunkelberger, {L. E.} and Dunlop, {J. C.} and Efimov, {L. G.} and J. Engelage and Engle, {K. S.} and G. Eppley and L. Eun and O. Evdokimov and O. Eyser and R. Fatemi and S. Fazio and J. Fedorisin and P. Filip and E. Finch and Y. Fisyak and Flores, {C. E.} and Gagliardi, {C. A.} and Gangadharan, {D. R.} and D. Garand and F. Geurts and A. Gibson and M. Girard and S. Gliske and L. Greiner and D. Grosnick and Gunarathne, {D. S.} and Y. Guo and A. Gupta and S. Gupta and W. Guryn and B. Haag and A. Hamed and Han, {L. X.} and R. Haque and Harris, {J. W.} and S. Heppelmann and A. Hirsch and Hoffmann, {G. W.} and Hofman, {D. J.} and S. Horvat and B. Huang and Huang, {H. Z.} and X. Huang and P. Huck and Humanic, {T. J.} and G. Igo and Jacobs, {W. W.} and H. Jang and Judd, {E. G.} and S. Kabana and D. Kalinkin and K. Kang and K. Kauder and Ke, {H. W.} and D. Keane and A. Kechechyan and A. Kesich and Khan, {Z. H.} and Kikola, {D. P.} and I. Kisel and A. Kisiel and Koetke, {D. D.} and T. Kollegger and J. Konzer and I. Koralt and Kosarzewski, {L. K.} and L. Kotchenda and Kraishan, {A. F.} and P. Kravtsov and K. Krueger and I. Kulakov and L. Kumar and Kycia, {R. A.} and Lamont, {M. A C} and Landgraf, {J. M.} and Landry, {K. D.} and J. Lauret and A. Lebedev and R. Lednicky and Lee, {J. H.} and Levine, {M. J.} and C. Li and W. Li and X. Li and X. Li and Y. Li and Li, {Z. M.} and Lisa, {M. A.} and F. Liu and T. Ljubicic and Llope, {W. J.} and M. Lomnitz and Longacre, {R. S.} and X. Luo and Ma, {G. L.} and Ma, {Y. G.} and {Madagodagettige Don}, {D. M M D} and Mahapatra, {D. P.} and R. Majka and S. Margetis and C. Markert and H. Masui and Matis, {H. S.} and D. McDonald and McShane, {T. S.} and Minaev, {N. G.} and S. Mioduszewski and B. Mohanty and Mondal, {M. M.} and Morozov, {D. A.} and Mustafa, {M. K.} and Nandi, {B. K.} and Md Nasim and Nayak, {T. K.} and Nelson, {J. M.} and G. Nigmatkulov and Nogach, {L. V.} and Noh, {S. Y.} and J. Novak and Nurushev, {S. B.} and G. Odyniec and A. Ogawa and K. Oh and A. Ohlson and V. Okorokov and Oldag, {E. W.} and Olvitt, {D. L.} and M. Pachr and Page, {B. S.} and Pal, {S. K.} and Pan, {Y. X.} and Y. Pandit and Y. Panebratsev and T. Pawlak and B. Pawlik and H. Pei and C. Perkins and W. Peryt and P. Pile and M. Planinic and J. Pluta and N. Poljak and K. Poniatowska and J. Porter and Poskanzer, {A. M.} and Pruthi, {N. K.} and M. Przybycien and Pujahari, {P. R.} and J. Putschke and H. Qiu and A. Quintero and S. Ramachandran and R. Raniwala and S. Raniwala and Ray, {R. L.} and Riley, {C. K.} and Ritter, {H. G.} and Roberts, {J. B.} and Rogachevskiy, {O. V.} and Romero, {J. L.} and Ross, {J. F.} and A. Roy and L. Ruan and J. Rusnak and O. Rusnakova and Sahoo, {N. R.} and Sahu, {P. K.} and I. Sakrejda and S. Salur and J. Sandweiss and E. Sangaline and A. Sarkar and J. Schambach and Scharenberg, {R. P.} and Schmah, {A. M.} and Schmidke, {W. B.} and N. Schmitz and Seger, {Janet E.} and P. Seyboth and N. Shah and E. Shahaliev and Shanmuganathan, {P. V.} and M. Shao and B. Sharma and Shen, {W. Q.} and Shi, {S. S.} and Shou, {Q. Y.} and Sichtermann, {E. P.} and Singaraju, {R. N.} and Skoby, {M. J.} and D. Smirnov and N. Smirnov and D. Solanki and P. Sorensen and Spinka, {H. M.} and B. Srivastava and Stanislaus, {T. D S} and Stevens, {J. R.} and R. Stock and M. Strikhanov and B. Stringfellow and M. Sumbera and X. Sun and Sun, {X. M.} and Y. Sun and Z. Sun and B. Surrow and Svirida, {D. N.} and Symons, {T. J M} and Szelezniak, {M. A.} and J. Takahashi and Tang, {A. H.} and Z. Tang and T. Tarnowsky and Thomas, {J. H.} and Timmins, {A. R.} and D. Tlusty and M. Tokarev and S. Trentalange and Tribble, {R. E.} and P. Tribedy and Trzeciak, {B. A.} and Tsai, {O. D.} and J. Turnau and T. Ullrich and Underwood, {D. G.} and {Van Buren}, G. and {Van Nieuwenhuizen}, G. and M. Vandenbroucke and Vanfossen, {J. A.} and R. Varma and Vasconcelos, {G. M S} and Vasiliev, {A. N.} and R. Vertesi and F. Videb{\ae}k and Viyogi, {Y. P.} and S. Vokal and A. Vossen and M. Wada and F. Wang and G. Wang and H. Wang and Wang, {J. S.} and Wang, {X. L.} and Y. Wang and Y. Wang and G. Webb and Webb, {J. C.} and Westfall, {G. D.} and H. Wieman and Wissink, {S. W.} and R. Witt and Wu, {Y. F.} and Z. Xiao and W. Xie and K. Xin and H. Xu and J. Xu and N. Xu and Xu, {Q. H.} and Y. Xu and Z. Xu and W. Yan and C. Yang and Y. Yang and Y. Yang and Z. Ye and P. Yepes and L. Yi and K. Yip and Yoo, {I. K.} and N. Yu and Y. Zawisza and H. Zbroszczyk and W. Zha and Zhang, {J. B.} and Zhang, {J. L.} and S. Zhang and Zhang, {X. P.} and Y. Zhang and Zhang, {Z. P.} and F. Zhao and J. Zhao and C. Zhong and X. Zhu and Zhu, {Y. H.} and Y. Zoulkarneeva and M. Zyzak",
year = "2015",
month = "7",
day = "10",
doi = "10.1103/PhysRevC.92.014904",
language = "English",
volume = "92",
journal = "Physical Review C - Nuclear Physics",
issn = "0556-2813",
publisher = "American Physical Society",
number = "1",

}

TY - JOUR

T1 - Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector

AU - Adamczyk, L.

AU - Adkins, J. K.

AU - Agakishiev, G.

AU - Aggarwal, M. M.

AU - Ahammed, Z.

AU - Alekseev, I.

AU - Alford, J.

AU - Anson, C. D.

AU - Aparin, A.

AU - Arkhipkin, D.

AU - Aschenauer, E. C.

AU - Averichev, G. S.

AU - Banerjee, A.

AU - Beavis, D. R.

AU - Bellwied, R.

AU - Bhasin, A.

AU - Bhati, A. K.

AU - Bhattarai, P.

AU - Bichsel, H.

AU - Bielcik, J.

AU - Bielcikova, J.

AU - Bland, L. C.

AU - Bordyuzhin, I. G.

AU - Borowski, W.

AU - Bouchet, J.

AU - Brandin, A. V.

AU - Brovko, S. G.

AU - Bültmann, S.

AU - Bunzarov, I.

AU - Burton, T. P.

AU - Butterworth, J.

AU - Caines, H.

AU - Calderón De La Barca Sánchez, M.

AU - Cebra, D.

AU - Cendejas, R.

AU - Cervantes, M. C.

AU - Chaloupka, P.

AU - Chang, Z.

AU - Chattopadhyay, S.

AU - Chen, H. F.

AU - Chen, J. H.

AU - Chen, L.

AU - Cheng, J.

AU - Cherney, Michael G.

AU - Chikanian, A.

AU - Christie, W.

AU - Chwastowski, J.

AU - Codrington, M. J M

AU - Contin, G.

AU - Cramer, J. G.

AU - Crawford, H. J.

AU - Cui, X.

AU - Das, S.

AU - Davila Leyva, A.

AU - De Silva, L. C.

AU - Debbe, R. R.

AU - Dedovich, T. G.

AU - Deng, J.

AU - Derevschikov, A. A.

AU - Derradi De Souza, R.

AU - Dhamija, S.

AU - Di Ruzza, B.

AU - Didenko, L.

AU - Dilks, C.

AU - Ding, F.

AU - Djawotho, P.

AU - Dong, X.

AU - Drachenberg, J. L.

AU - Draper, J. E.

AU - Du, C. M.

AU - Dunkelberger, L. E.

AU - Dunlop, J. C.

AU - Efimov, L. G.

AU - Engelage, J.

AU - Engle, K. S.

AU - Eppley, G.

AU - Eun, L.

AU - Evdokimov, O.

AU - Eyser, O.

AU - Fatemi, R.

AU - Fazio, S.

AU - Fedorisin, J.

AU - Filip, P.

AU - Finch, E.

AU - Fisyak, Y.

AU - Flores, C. E.

AU - Gagliardi, C. A.

AU - Gangadharan, D. R.

AU - Garand, D.

AU - Geurts, F.

AU - Gibson, A.

AU - Girard, M.

AU - Gliske, S.

AU - Greiner, L.

AU - Grosnick, D.

AU - Gunarathne, D. S.

AU - Guo, Y.

AU - Gupta, A.

AU - Gupta, S.

AU - Guryn, W.

AU - Haag, B.

AU - Hamed, A.

AU - Han, L. X.

AU - Haque, R.

AU - Harris, J. W.

AU - Heppelmann, S.

AU - Hirsch, A.

AU - Hoffmann, G. W.

AU - Hofman, D. J.

AU - Horvat, S.

AU - Huang, B.

AU - Huang, H. Z.

AU - Huang, X.

AU - Huck, P.

AU - Humanic, T. J.

AU - Igo, G.

AU - Jacobs, W. W.

AU - Jang, H.

AU - Judd, E. G.

AU - Kabana, S.

AU - Kalinkin, D.

AU - Kang, K.

AU - Kauder, K.

AU - Ke, H. W.

AU - Keane, D.

AU - Kechechyan, A.

AU - Kesich, A.

AU - Khan, Z. H.

AU - Kikola, D. P.

AU - Kisel, I.

AU - Kisiel, A.

AU - Koetke, D. D.

AU - Kollegger, T.

AU - Konzer, J.

AU - Koralt, I.

AU - Kosarzewski, L. K.

AU - Kotchenda, L.

AU - Kraishan, A. F.

AU - Kravtsov, P.

AU - Krueger, K.

AU - Kulakov, I.

AU - Kumar, L.

AU - Kycia, R. A.

AU - Lamont, M. A C

AU - Landgraf, J. M.

AU - Landry, K. D.

AU - Lauret, J.

AU - Lebedev, A.

AU - Lednicky, R.

AU - Lee, J. H.

AU - Levine, M. J.

AU - Li, C.

AU - Li, W.

AU - Li, X.

AU - Li, X.

AU - Li, Y.

AU - Li, Z. M.

AU - Lisa, M. A.

AU - Liu, F.

AU - Ljubicic, T.

AU - Llope, W. J.

AU - Lomnitz, M.

AU - Longacre, R. S.

AU - Luo, X.

AU - Ma, G. L.

AU - Ma, Y. G.

AU - Madagodagettige Don, D. M M D

AU - Mahapatra, D. P.

AU - Majka, R.

AU - Margetis, S.

AU - Markert, C.

AU - Masui, H.

AU - Matis, H. S.

AU - McDonald, D.

AU - McShane, T. S.

AU - Minaev, N. G.

AU - Mioduszewski, S.

AU - Mohanty, B.

AU - Mondal, M. M.

AU - Morozov, D. A.

AU - Mustafa, M. K.

AU - Nandi, B. K.

AU - Nasim, Md

AU - Nayak, T. K.

AU - Nelson, J. M.

AU - Nigmatkulov, G.

AU - Nogach, L. V.

AU - Noh, S. Y.

AU - Novak, J.

AU - Nurushev, S. B.

AU - Odyniec, G.

AU - Ogawa, A.

AU - Oh, K.

AU - Ohlson, A.

AU - Okorokov, V.

AU - Oldag, E. W.

AU - Olvitt, D. L.

AU - Pachr, M.

AU - Page, B. S.

AU - Pal, S. K.

AU - Pan, Y. X.

AU - Pandit, Y.

AU - Panebratsev, Y.

AU - Pawlak, T.

AU - Pawlik, B.

AU - Pei, H.

AU - Perkins, C.

AU - Peryt, W.

AU - Pile, P.

AU - Planinic, M.

AU - Pluta, J.

AU - Poljak, N.

AU - Poniatowska, K.

AU - Porter, J.

AU - Poskanzer, A. M.

AU - Pruthi, N. K.

AU - Przybycien, M.

AU - Pujahari, P. R.

AU - Putschke, J.

AU - Qiu, H.

AU - Quintero, A.

AU - Ramachandran, S.

AU - Raniwala, R.

AU - Raniwala, S.

AU - Ray, R. L.

AU - Riley, C. K.

AU - Ritter, H. G.

AU - Roberts, J. B.

AU - Rogachevskiy, O. V.

AU - Romero, J. L.

AU - Ross, J. F.

AU - Roy, A.

AU - Ruan, L.

AU - Rusnak, J.

AU - Rusnakova, O.

AU - Sahoo, N. R.

AU - Sahu, P. K.

AU - Sakrejda, I.

AU - Salur, S.

AU - Sandweiss, J.

AU - Sangaline, E.

AU - Sarkar, A.

AU - Schambach, J.

AU - Scharenberg, R. P.

AU - Schmah, A. M.

AU - Schmidke, W. B.

AU - Schmitz, N.

AU - Seger, Janet E.

AU - Seyboth, P.

AU - Shah, N.

AU - Shahaliev, E.

AU - Shanmuganathan, P. V.

AU - Shao, M.

AU - Sharma, B.

AU - Shen, W. Q.

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PY - 2015/7/10

Y1 - 2015/7/10

N2 - We present results of analyses of two-pion interferometry in Au+Au collisions at sNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV measured in the STAR detector as part of the BNL Relativistic Heavy Ion Collider Beam Energy Scan program. The extracted correlation lengths (Hanbury-Brown-Twiss radii) are studied as a function of beam energy, azimuthal angle relative to the reaction plane, centrality, and transverse mass (mT) of the particles. The azimuthal analysis allows extraction of the eccentricity of the entire fireball at kinetic freeze-out. The energy dependence of this observable is expected to be sensitive to changes in the equation of state. A new global fit method is studied as an alternate method to directly measure the parameters in the azimuthal analysis. The eccentricity shows a monotonic decrease with beam energy that is qualitatively consistent with the trend from all model predictions and quantitatively consistent with a hadronic transport model.

AB - We present results of analyses of two-pion interferometry in Au+Au collisions at sNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV measured in the STAR detector as part of the BNL Relativistic Heavy Ion Collider Beam Energy Scan program. The extracted correlation lengths (Hanbury-Brown-Twiss radii) are studied as a function of beam energy, azimuthal angle relative to the reaction plane, centrality, and transverse mass (mT) of the particles. The azimuthal analysis allows extraction of the eccentricity of the entire fireball at kinetic freeze-out. The energy dependence of this observable is expected to be sensitive to changes in the equation of state. A new global fit method is studied as an alternate method to directly measure the parameters in the azimuthal analysis. The eccentricity shows a monotonic decrease with beam energy that is qualitatively consistent with the trend from all model predictions and quantitatively consistent with a hadronic transport model.

UR - http://www.scopus.com/inward/record.url?scp=84937012905&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84937012905&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.92.014904

DO - 10.1103/PhysRevC.92.014904

M3 - Article

VL - 92

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 1

M1 - 014904

ER -