Evidence for local compensation of baryon number in e+e- annihilation

M. Althoff; W. Braunschweig; F. J. Kirschfink; K. Lübelsmeyer; H. U. Martyn; J. Rimkus; P. Rosskamp; H. G. Sander; D. Schmitz; H. Siebke; W. Wallraff; H. M. Fischer; H. Hartmann; A. Jocksch; G. Knop; L. Köpke; H. Kolanoski; H. Kück; V. Mertens; R. Wedemeyer; M. Wollstadt; Y. Eisenberg; K. Gather; H. Hultschig; P. Joos; U. Kötz; H. Kowalski; A. Ladage; B. Löhr; D. Lüke; P. Mättig; K. H. Mess; D. Notz; R. J. Nowak; J. Pyrlik; R. Riethmüller; M. Rushton; W. Schütte; D. Trines; G. Wolf; Ch Xiao; R. Fohrmann; E. Hilger; T. Kracht; H. L. Krasemann; P. Leu; E. Lohrmann; D. Pandoulas; G. Poelz; K. U. Pösnecker; P. Schmüser; B. H. Wiik; R. Beuselinck; D. M. Binnie; A. J. Campbell; P. J. Dornan; B. Foster; D. A. Garbutt; C. Jenkins; T. D. Jones; W. G. Jones; J. McCardle; J. K. Sedgbeer; J. Thomas; W. A.T. Wan Abdullah; K. W. Bell; M. G. Bowler; P. Bull; R. J. Cashmore; P. E.L. Clarke; R. Devenish; P. Grossmann; C. M. Hawkes; S. L. Lloyd; G. L. Salmon; T. R. Wyatt; C. Youngman; G. E. Forden; J. C. Hart; J. Harvey; D. K. Hasell; J. Proudfoot; D. H. Saxon; P. L. Woodworth; F. Barreiro; M. Dittmar; M. Holder; G. Kreutz; B. Neumann; E. Duchovni; U. Karshon; G. Mikenberg; R. Mir; D. Revel; E. Ronat; A. Shapira; G. Yekutieli; G. Baranko; T. Barklow; A. Caldwell; M. Cherney; J. M. Izen; M. Mermikides; G. Rudolph; D. Strom; M. Takashima; H. Venkataramania; E. Wicklund; Lan Wu Sau Lan Wu; G. Zobernig

doi:10.1016/0370-2693(84)90047-9

Evidence for local compensation of baryon number in e⁺e^- annihilation

M. Althoff, W. Braunschweig, F. J. Kirschfink, K. Lübelsmeyer, H. U. Martyn, J. Rimkus, P. Rosskamp, H. G. Sander, D. Schmitz, H. Siebke, W. Wallraff, H. M. Fischer, H. Hartmann, A. Jocksch, G. Knop, L. Köpke, H. Kolanoski, H. Kück, V. Mertens, R. WedemeyerM. Wollstadt, Y. Eisenberg, K. Gather, H. Hultschig, P. Joos, U. Kötz, H. Kowalski, A. Ladage, B. Löhr, D. Lüke, P. Mättig, K. H. Mess, D. Notz, R. J. Nowak, J. Pyrlik, R. Riethmüller, M. Rushton, W. Schütte, D. Trines, G. Wolf, Ch Xiao, R. Fohrmann, E. Hilger, T. Kracht, H. L. Krasemann, P. Leu, E. Lohrmann, D. Pandoulas, G. Poelz, K. U. Pösnecker, P. Schmüser, B. H. Wiik, R. Beuselinck, D. M. Binnie, A. J. Campbell, P. J. Dornan, B. Foster, D. A. Garbutt, C. Jenkins, T. D. Jones, W. G. Jones, J. McCardle, J. K. Sedgbeer, J. Thomas, W. A.T. Wan Abdullah, K. W. Bell, M. G. Bowler, P. Bull, R. J. Cashmore, P. E.L. Clarke, R. Devenish, P. Grossmann, C. M. Hawkes, S. L. Lloyd, G. L. Salmon, T. R. Wyatt, C. Youngman, G. E. Forden, J. C. Hart, J. Harvey, D. K. Hasell, J. Proudfoot, D. H. Saxon, P. L. Woodworth, F. Barreiro, M. Dittmar, M. Holder, G. Kreutz, B. Neumann, E. Duchovni, U. Karshon, G. Mikenberg, R. Mir, D. Revel, E. Ronat, A. Shapira, G. Yekutieli, G. Baranko, T. Barklow, A. Caldwell, M. Cherney, J. M. Izen, M. Mermikides, G. Rudolph, D. Strom, M. Takashima, H. Venkataramania, E. Wicklund, Lan Wu Sau Lan Wu, G. Zobernig

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

We have studied at CM energies of 14, 22 and 30-36.7 GeV e⁺e^- annihilation events in which the hadronic final state contains both a proton and an antiproton in the momentum range 1.0 <p <GeV/c. We find that such pairs are produced predominantly in the same jet and conclude that baryon-antibaryon production is dominated by a mechanism involving local compensation of baryon number.

Original language	English (US)
Pages (from-to)	126-132
Number of pages	7
Journal	Physics Letters B
Volume	139
Issue number	1-2
DOIs	https://doi.org/10.1016/0370-2693(84)90047-9
State	Published - May 3 1984
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/0370-2693(84)90047-9

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Althoff, M., Braunschweig, W., Kirschfink, F. J., Lübelsmeyer, K., Martyn, H. U., Rimkus, J., Rosskamp, P., Sander, H. G., Schmitz, D., Siebke, H., Wallraff, W., Fischer, H. M., Hartmann, H., Jocksch, A., Knop, G., Köpke, L., Kolanoski, H., Kück, H., Mertens, V., ... Zobernig, G. (1984). Evidence for local compensation of baryon number in e⁺e^- annihilation. Physics Letters B, 139(1-2), 126-132. https://doi.org/10.1016/0370-2693(84)90047-9

Althoff, M, Braunschweig, W, Kirschfink, FJ, Lübelsmeyer, K, Martyn, HU, Rimkus, J, Rosskamp, P, Sander, HG, Schmitz, D, Siebke, H, Wallraff, W, Fischer, HM, Hartmann, H, Jocksch, A, Knop, G, Köpke, L, Kolanoski, H, Kück, H, Mertens, V, Wedemeyer, R, Wollstadt, M, Eisenberg, Y, Gather, K, Hultschig, H, Joos, P, Kötz, U, Kowalski, H, Ladage, A, Löhr, B, Lüke, D, Mättig, P, Mess, KH, Notz, D, Nowak, RJ, Pyrlik, J, Riethmüller, R, Rushton, M, Schütte, W, Trines, D, Wolf, G, Xiao, C, Fohrmann, R, Hilger, E, Kracht, T, Krasemann, HL, Leu, P, Lohrmann, E, Pandoulas, D, Poelz, G, Pösnecker, KU, Schmüser, P, Wiik, BH, Beuselinck, R, Binnie, DM, Campbell, AJ, Dornan, PJ, Foster, B, Garbutt, DA, Jenkins, C, Jones, TD, Jones, WG, McCardle, J, Sedgbeer, JK, Thomas, J, Wan Abdullah, WAT, Bell, KW, Bowler, MG, Bull, P, Cashmore, RJ, Clarke, PEL, Devenish, R, Grossmann, P, Hawkes, CM, Lloyd, SL, Salmon, GL, Wyatt, TR, Youngman, C, Forden, GE, Hart, JC, Harvey, J, Hasell, DK, Proudfoot, J, Saxon, DH, Woodworth, PL, Barreiro, F, Dittmar, M, Holder, M, Kreutz, G, Neumann, B, Duchovni, E, Karshon, U, Mikenberg, G, Mir, R, Revel, D, Ronat, E, Shapira, A, Yekutieli, G, Baranko, G, Barklow, T, Caldwell, A, Cherney, M, Izen, JM, Mermikides, M, Rudolph, G, Strom, D, Takashima, M, Venkataramania, H, Wicklund, E, Sau Lan Wu, LW & Zobernig, G 1984, 'Evidence for local compensation of baryon number in e⁺e^- annihilation', Physics Letters B, vol. 139, no. 1-2, pp. 126-132. https://doi.org/10.1016/0370-2693(84)90047-9

@article{72b6199ccdaa4de8a7ce3f3987dbaa8e,

title = "Evidence for local compensation of baryon number in e+e- annihilation",

abstract = "We have studied at CM energies of 14, 22 and 30-36.7 GeV e+e- annihilation events in which the hadronic final state contains both a proton and an antiproton in the momentum range 1.0 ",

author = "M. Althoff and W. Braunschweig and Kirschfink, {F. J.} and K. L{\"u}belsmeyer and Martyn, {H. U.} and J. Rimkus and P. Rosskamp and Sander, {H. G.} and D. Schmitz and H. Siebke and W. Wallraff and Fischer, {H. M.} and H. Hartmann and A. Jocksch and G. Knop and L. K{\"o}pke and H. Kolanoski and H. K{\"u}ck and V. Mertens and R. Wedemeyer and M. Wollstadt and Y. Eisenberg and K. Gather and H. Hultschig and P. Joos and U. K{\"o}tz and H. Kowalski and A. Ladage and B. L{\"o}hr and D. L{\"u}ke and P. M{\"a}ttig and Mess, {K. H.} and D. Notz and Nowak, {R. J.} and J. Pyrlik and R. Riethm{\"u}ller and M. Rushton and W. Sch{\"u}tte and D. Trines and G. Wolf and Ch Xiao and R. Fohrmann and E. Hilger and T. Kracht and Krasemann, {H. L.} and P. Leu and E. Lohrmann and D. Pandoulas and G. Poelz and P{\"o}snecker, {K. U.} and P. Schm{\"u}ser and Wiik, {B. H.} and R. Beuselinck and Binnie, {D. M.} and Campbell, {A. J.} and Dornan, {P. J.} and B. Foster and Garbutt, {D. A.} and C. Jenkins and Jones, {T. D.} and Jones, {W. G.} and J. McCardle and Sedgbeer, {J. K.} and J. Thomas and {Wan Abdullah}, {W. A.T.} and Bell, {K. W.} and Bowler, {M. G.} and P. Bull and Cashmore, {R. J.} and Clarke, {P. E.L.} and R. Devenish and P. Grossmann and Hawkes, {C. M.} and Lloyd, {S. L.} and Salmon, {G. L.} and Wyatt, {T. R.} and C. Youngman and Forden, {G. E.} and Hart, {J. C.} and J. Harvey and Hasell, {D. K.} and J. Proudfoot and Saxon, {D. H.} and Woodworth, {P. L.} and F. Barreiro and M. Dittmar and M. Holder and G. Kreutz and B. Neumann and E. Duchovni and U. Karshon and G. Mikenberg and R. Mir and D. Revel and E. Ronat and A. Shapira and G. Yekutieli and G. Baranko and T. Barklow and A. Caldwell and M. Cherney and Izen, {J. M.} and M. Mermikides and G. Rudolph and D. Strom and M. Takashima and H. Venkataramania and E. Wicklund and {Sau Lan Wu}, {Lan Wu} and G. Zobernig",

note = "Funding Information: The observation of abundant baryon production in high energy e÷e - annihilation into hadrons \[1-6\] shows that baryon formation is an important feature of quark and gluon fragmentation. Indeed, at a CM energy W = 34 GeV an event contains on average 0.8 -+ 0.1 p,~ \[4\].L arge baryon yields have also been observed in deep inelastic/~N scattering \[7\]. The investigation of events in which two or more baryons are detected in the final state provides additional information on the baryon production mechanism. An analysis of events having at least two final state protons, with momenta restricted to the range 0.4-1.2 GeV/c, has already been published \[4\].( Unless an explicit distinction is made, the term {"}proton{"} is used from here on to refer to either a proton or an antiproton). No evidence for anomalously large production of more than one p + ~ pair per event was found and - within the limited rapidity range considered - no statistically significant correlation between p and ~ was observed. Here we extend our analysis to events where the protons in the final state have 1 Present address: Siemens, Munich, Germany. 2 Present address: CERN, Geneva, Switzerland. 3 Supported by the Deutsches Bundesministerium fiir For-schung und Technologie. 4 Present address: Lufthansa, Frankfurt, Germany. s On leave from Weizmann Institute, Rehovot, Israel. 6 On leave from Warsaw University, Warsaw, Poland. 7 Present address: GKSS, Geesthacht, Germany. a On leave from the University of Science and Technology of China, Hefei, China. Supported by the Kortrad Aden-auer Stiftung. 9 Present address: Glasgow University, Glasgow, UK. 1 o On leave from University Malaya, Kuala Lumpur, Malaya. 11 Supported by the UK Science and Engineering Research Council. 12 Present address: Argonne National Laboratory, Argonne, IL, USA. 13 Present address: Institute of Oceanographic Sciences, Bid-ston, Merseyside, UK. 14 Supported by the Minerva Gesellschaft f/Jr Forschung mbH. 1 s Present address: SLAC, Stanford, CA, USA. 16 Supported by the US Department of Energy contract DE-AC02-76ER00881.",

year = "1984",

month = may,

day = "3",

doi = "10.1016/0370-2693(84)90047-9",

language = "English (US)",

volume = "139",

pages = "126--132",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Evidence for local compensation of baryon number in e+e- annihilation

AU - Althoff, M.

AU - Braunschweig, W.

AU - Kirschfink, F. J.

AU - Lübelsmeyer, K.

AU - Martyn, H. U.

AU - Rimkus, J.

AU - Rosskamp, P.

AU - Sander, H. G.

AU - Schmitz, D.

AU - Siebke, H.

AU - Wallraff, W.

AU - Fischer, H. M.

AU - Hartmann, H.

AU - Jocksch, A.

AU - Knop, G.

AU - Köpke, L.

AU - Kolanoski, H.

AU - Kück, H.

AU - Mertens, V.

AU - Wedemeyer, R.

AU - Wollstadt, M.

AU - Eisenberg, Y.

AU - Gather, K.

AU - Hultschig, H.

AU - Joos, P.

AU - Kötz, U.

AU - Kowalski, H.

AU - Ladage, A.

AU - Löhr, B.

AU - Lüke, D.

AU - Mättig, P.

AU - Mess, K. H.

AU - Notz, D.

AU - Nowak, R. J.

AU - Pyrlik, J.

AU - Riethmüller, R.

AU - Rushton, M.

AU - Schütte, W.

AU - Trines, D.

AU - Wolf, G.

AU - Xiao, Ch

AU - Fohrmann, R.

AU - Hilger, E.

AU - Kracht, T.

AU - Krasemann, H. L.

AU - Leu, P.

AU - Lohrmann, E.

AU - Pandoulas, D.

AU - Poelz, G.

AU - Pösnecker, K. U.

AU - Schmüser, P.

AU - Wiik, B. H.

AU - Beuselinck, R.

AU - Binnie, D. M.

AU - Campbell, A. J.

AU - Dornan, P. J.

AU - Foster, B.

AU - Garbutt, D. A.

AU - Jenkins, C.

AU - Jones, T. D.

AU - Jones, W. G.

AU - McCardle, J.

AU - Sedgbeer, J. K.

AU - Thomas, J.

AU - Wan Abdullah, W. A.T.

AU - Bell, K. W.

AU - Bowler, M. G.

AU - Bull, P.

AU - Cashmore, R. J.

AU - Clarke, P. E.L.

AU - Devenish, R.

AU - Grossmann, P.

AU - Hawkes, C. M.

AU - Lloyd, S. L.

AU - Salmon, G. L.

AU - Wyatt, T. R.

AU - Youngman, C.

AU - Forden, G. E.

AU - Hart, J. C.

AU - Harvey, J.

AU - Hasell, D. K.

AU - Proudfoot, J.

AU - Saxon, D. H.

AU - Woodworth, P. L.

AU - Barreiro, F.

AU - Dittmar, M.

AU - Holder, M.

AU - Kreutz, G.

AU - Neumann, B.

AU - Duchovni, E.

AU - Karshon, U.

AU - Mikenberg, G.

AU - Mir, R.

AU - Revel, D.

AU - Ronat, E.

AU - Shapira, A.

AU - Yekutieli, G.

AU - Baranko, G.

AU - Barklow, T.

AU - Caldwell, A.

AU - Cherney, M.

AU - Izen, J. M.

AU - Mermikides, M.

AU - Rudolph, G.

AU - Strom, D.

AU - Takashima, M.

AU - Venkataramania, H.

AU - Wicklund, E.

AU - Sau Lan Wu, Lan Wu

AU - Zobernig, G.

N1 - Funding Information: The observation of abundant baryon production in high energy e÷e - annihilation into hadrons \[1-6\] shows that baryon formation is an important feature of quark and gluon fragmentation. Indeed, at a CM energy W = 34 GeV an event contains on average 0.8 -+ 0.1 p,~ \[4\].L arge baryon yields have also been observed in deep inelastic/~N scattering \[7\]. The investigation of events in which two or more baryons are detected in the final state provides additional information on the baryon production mechanism. An analysis of events having at least two final state protons, with momenta restricted to the range 0.4-1.2 GeV/c, has already been published \[4\].( Unless an explicit distinction is made, the term "proton" is used from here on to refer to either a proton or an antiproton). No evidence for anomalously large production of more than one p + ~ pair per event was found and - within the limited rapidity range considered - no statistically significant correlation between p and ~ was observed. Here we extend our analysis to events where the protons in the final state have 1 Present address: Siemens, Munich, Germany. 2 Present address: CERN, Geneva, Switzerland. 3 Supported by the Deutsches Bundesministerium fiir For-schung und Technologie. 4 Present address: Lufthansa, Frankfurt, Germany. s On leave from Weizmann Institute, Rehovot, Israel. 6 On leave from Warsaw University, Warsaw, Poland. 7 Present address: GKSS, Geesthacht, Germany. a On leave from the University of Science and Technology of China, Hefei, China. Supported by the Kortrad Aden-auer Stiftung. 9 Present address: Glasgow University, Glasgow, UK. 1 o On leave from University Malaya, Kuala Lumpur, Malaya. 11 Supported by the UK Science and Engineering Research Council. 12 Present address: Argonne National Laboratory, Argonne, IL, USA. 13 Present address: Institute of Oceanographic Sciences, Bid-ston, Merseyside, UK. 14 Supported by the Minerva Gesellschaft f/Jr Forschung mbH. 1 s Present address: SLAC, Stanford, CA, USA. 16 Supported by the US Department of Energy contract DE-AC02-76ER00881.

PY - 1984/5/3

Y1 - 1984/5/3

N2 - We have studied at CM energies of 14, 22 and 30-36.7 GeV e+e- annihilation events in which the hadronic final state contains both a proton and an antiproton in the momentum range 1.0

AB - We have studied at CM energies of 14, 22 and 30-36.7 GeV e+e- annihilation events in which the hadronic final state contains both a proton and an antiproton in the momentum range 1.0

UR - http://www.scopus.com/inward/record.url?scp=0039268815&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0039268815&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(84)90047-9

DO - 10.1016/0370-2693(84)90047-9

M3 - Article

AN - SCOPUS:0039268815

VL - 139

SP - 126

EP - 132

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 1-2

ER -

Evidence for local compensation of baryon number in e⁺e^- annihilation

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