Phys. Rev. D
41,
2330–2333
(1990)
Pseudorapidity distributions of charged particles produced in p̅ p interactions as √s=630 and 1800 GeV
F. Abe et al.
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F. Abe, D. Amidei, G. Apollinari, G. Ascoli, M. Atac, P. Auchincloss, A. R. Baden, A. Barbaro-Galtieri, V. E. Barnes, F. Bedeschi, S. Belforte, G. Bellettini, J. Bellinger, J. Bensinger, A. Beretvas, P. Berge, S. Bertolucci, S. Bhadra, M. Binkley, R. Blair, C. Blocker, J. Bofill, A. W. Booth, G. Brandenburg, D. Brown, A. Byon, K. L. Byrum, M. Campbell, R. Carey, W. Carithers, D. Carlsmith, J. T. Carroll, R. Cashmore, F. Cervelli, K. Chadwick,, T. Chapin, G. Chiarelli, W. Chinowsky, S. Cihangir, D. Cline, D. Connor, M. Contreras, J. Cooper, M. Cordelli, M. Curatolo, C. Day, R. DelFabbro, M. Dell'Orso, L. DeMortier, T. Devlin, D. DiBitonto, R. Diebold, F. Dittus, A. DiVirgilio, J. E. Elias, R. Ely, S. Errede, B. Esposito, B. Flaugher, E. Focardi, G. W. Foster, M. Franklin,, J. Freeman, H. Frisch, Y. Fukui, A. F. Garfinkel, P. Giannetti, N. Giokaris, P. Giromini, L. Gladney, M. Gold, K. Goulianos, C. Grosso-Pilcher, C. Haber, S. R. Hahn, R. Handler, R. M. Harris, J. Hauser, T. Hessing, R. Hollebeek, P. Hu, B. Hubbard, P. Hurst, J. Huth, H. Jensen, R. P. Johnson, U. Joshi, R. W. Kadel, T. Kamon, S. Kanda, D. A. Kardelis, I. Karliner, E. Kearns, R. Kephart, P. Kesten, H. Keutelian, S. Kim, L. Kirsch, K. Kondo, U. Kruse, S. E. Kuhlmann, A. T. Laasanen, W. Li, T. Liss, N. Lockyer, F. Marchetto, R. Markeloff, L. A. Markosky, P. McIntyre, A. Menzione, T. Meyer, S. Mikamo, M. Miller, T. Mimashi, S. Miscetti, M. Mishina, S. Miyashita, N. Mondal, S. Mori, Y. Morita, A. Mukherjee, C. Newman-Holmes, L. Nodulman, R. Paoletti, A. Para, J. Patrick, T. J. Phillips, H. Piekarz, R. Plunkett, L. Pondrom, J. Proudfoot, G. Punzi, D. Quarrie, K. Ragan, G. Redlinger, J. Rhoades, F. Rimondi, L. Ristori, T. Rohaly, A. Roodman, A. Sansoni, R. Sard, V. Scarpine, P. Schlabach, E. E. Schmidt, P. Schoessow, M. H. Schub, R. Schwitters, A. Scribano, S. Segler, M. Sekiguchi, P. Sestini, M. Shapiro, M. Sheaff, M. Shibata, M. Shochet, J. Siegrist, P. Sinervo, J. Skarha, D. A. Smith, F. D. Snider, R. St. Denis, A. Stefanini, Y. Takaiwa, K. Takikawa, S. Tarem, D. Theriot, A. Tollestrup, G. Tonelli, Y. Tsay, F. Ukegawa, D. Underwood, R. Vidal, R. G. Wagner, R. L. Wagner, J. Walsh, T. Watts, R. Webb, T. Westhusing, S. White, A. Wicklund, H. H. Williams, T. Yamanouchi, A. Yamashita, K. Yasuoka, G. P. Yeh, J. Yoh, and F. Zetti
aArgonne National Laboratory, Argonne, Illinois 60439
bBrandeis University, Waltham, Massachusetts 02254
cUniversity of Chicago, Chicago, Illinois 60637
dFermi National Accelerator Laboratory, Batavia, Illinois 60510
eLaboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nuclear, Frascati, Italy
fHarvard University, Cambridge, Massachusetts 02138
gUniversity of Illinois, Urbana, Illinois 61801
hNational Laboratory for High Energy Physics (KEK), Tsukuba, Ibaraki 305, Japan
iLawrence Berkeley Laboratory, Berkeley, California 94720
jUniversity of Pennsylvania, Philadelphia, Pennsylvania 19104
kIstituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, Pisa, Italy
lPurdue University, West Lafayette, Indiana 47907
mRockefeller University, New York, New York 10021
nRutgers University, Piscataway, New Jersey 08854
oTexas A&M University, College Station, Texas 77843
pUniversity of Tsukuba, Tsukuba, Ibaraki 305, Japan
qUniversity of Wisconsin, Madison, Wisconsin 53706
Received 2 October 1989; published in the issue dated 1 April 1990
We present measurements of the pseudorapidity (η) distribution of charged particles (dNch/dη) produced within |η|≤3.5 in proton-antiproton collisions at √s of 630 and 1800 GeV. We measure dNch/dη at η=0 to be 3.18±0.06(stat)±0.10(syst) at 630 GeV, and 3.95±0.03 (stat)±0.13(syst) at 1800 GeV. Many systematic errors in the ratio of dNch/dη at the two energies cancel, and we measure 1.26±0.01±0.04 for the ratio of dNch/dη at 1800 GeV to that at 630 GeV within |η|≤3. Comparing to lower-energy data, we observe an increase faster than ln(s) in dNch/dη at η=0.
© 1990 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.41.2330
DOI:
10.1103/PhysRevD.41.2330
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