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 | |
| State | Published - May 3 1984 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
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Evidence for local compensation of baryon number in e+e- annihilation. / 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.; 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, K. H.; Notz, D.; Nowak, R. J.; Pyrlik, J.; Riethmüller, R.; Rushton, M.; Schütte, W.; Trines, D.; Wolf, G.; Xiao, Ch; Fohrmann, R.; Hilger, E.; Kracht, T.; Krasemann, H. L.; Leu, P.; Lohrmann, E.; Pandoulas, D.; Poelz, G.; Pösnecker, K. U.; Schmüser, P.; Wiik, B. H.; Beuselinck, R.; Binnie, D. M.; Campbell, A. J.; Dornan, P. J.; Foster, B.; Garbutt, D. A.; Jenkins, C.; Jones, T. D.; Jones, W. G.; McCardle, J.; Sedgbeer, J. K.; Thomas, J.; Wan Abdullah, W. A.T.; Bell, K. W.; Bowler, M. G.; Bull, P.; Cashmore, R. J.; Clarke, P. E.L.; Devenish, R.; Grossmann, P.; Hawkes, C. M.; Lloyd, S. L.; Salmon, G. L.; Wyatt, T. R.; Youngman, C.; Forden, G. E.; Hart, J. C.; Harvey, J.; Hasell, D. K.; Proudfoot, J.; Saxon, D. H.; Woodworth, P. L.; 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, J. M.; Mermikides, M.; Rudolph, G.; Strom, D.; Takashima, M.; Venkataramania, H.; Wicklund, E.; Sau Lan Wu, Lan Wu; Zobernig, G.
In: Physics Letters B, Vol. 139, No. 1-2, 03.05.1984, p. 126-132.Research output: Contribution to journal › Article › peer-review
}
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. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.
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 -