Abstract
The production and properties of high transverse momentum hadron jets have been measured in the UA2 experiment at the CERN\(\bar pp\) Collider\((\sqrt s = 540 GEV)\) using a highly segmented total absorption calorimeter. The characteristics of a sample of two-jet events with invariant mass up to 200 GeV/c2 are discussed, including measurements of their fragmentation properties, angular and rapidity distributions, and the properties of the additional energy clusters accompanying the two-jet system. Cross sections for inclusive jet production in the jet transverse momentum range between 30 and 100 GeV/c and for the two-jet invariant mass distribution in the mass range from 60–200 GeV/c2 are reported.
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R.P. Feynman: Photon hadron interactions. New York: Benjamin 1972: S.M. Berman, M. Jacob: Phys. Rev. Lett.25, 1683 (1970); S.M. Berman, J.D. Bjorken, J.B. Kogut: Phys. Rev.4D, 3388 (1971)
For reviews see for example: K. Hansen P. Hoyer: Jets in high energy collisions. Phys. Scripta19, 1 (1979); P. Dariutal: Ann. Rev. Nucl. Part. Sci.30, 159 (1980)
B. Alper et al.: Phys. Lett.44B, 521 (1973); M. Banner et al.: Phys. Lett.44B, 537 (1973); F.W. Büsser et al.: Phys. Lett.46B, 471 (1973)
M.G. Albrow et al.: Nucl. Phys.B 160, 1 (1979); A.L.S. Angelis et al.: Phys. Scripta19, 116 (1979); A.G. Clark et al.: Nucl. Phys.B 160, 397 (1979); D. Drijard et al.: Nucl. Phys.B 166, 223 (1980).
UA2 Collab. M. Banner et al.: Phys. Lett.118B, 203 (1982)
UA2 Collab. G. Arnison et al.: Phys. Lett.123B, 115 (1983)
Axial Field Spectrometer Collab. T. Åkesson et al.: Phys. Lett.118B, 185, 193 (1982); A.L.S. Angelis et al. CERN-EP-83-46 (1983) Phys. Lett. B (in press)
G. Wolf: Proceedings of the 21st Int. Conf. on High Energy Physics. J. Phys. (Paris) Colloq. C-3 suppl.12 tome 43, (1982)
Staff of the CERN\(\bar pp\) Project. Phys. Lett.107B, 231 (1981)
UA2 Collab. M. Banner et al.: Phys. Lett.115B, 59 (1982);122B, 322 (1983)
A. Beer et al.: The Central Calorimeter of the UA2 Experiment at the CERN\(\bar pp\) Collider, to be published in Nucl. Instrum. Methods
The cross-section seen by the “minimum bias” trigger counters amounts to 43.9±3.5 mb as measured by: UA4 Collab. R. Battiston et al. Phys. Lett.117B, 126 (1982) and contribution to the XVIII Rencontre de Moriond on Proton-Antiproton Collider Physics, La Plagne, March 19–25, 1983 (to be published)
C. de Marzo et al.: Phys. Lett.112B, 173 (1982); M. Arenton et al.: Evidence for jets from a transverse energy triggered calorimeter experiment at FERMILAB, Contrib. XXIst Intern. Conf. on High Energy Physics (Paris, France, July 1982); B. Brown et al.: Properties of high transverse energy hadronic events, NAL preprint FERMILAB-Conf.-82/34 (Exp. 1982)
UA 5 Collab. K. Alpgård et al.: Phys. Lett.115B, 71 (1982); B. Eckart: private communication
TASSO Collab. R. Brandelik et al.: Phys. Lett.86B, 243 (1979);89 B, 418 (1980); M. Holder, G. Wolf; private communication
B.R. Webber: Contribution to the XVIII Rencontre de Moriond on Proton-Antiproton Collider Physics, La Plagne, March 19–25, 1983; CERN TH-3569 (1983)
Compiled in: G. Wolf: High energye + e − interactions. DESY 81-086 (1981); R. Plunkett: PhD Thesis Cornell University (1983)
A.G. Clark et al.: op. cit. Compiled in: G. Wolf: High energye + e − interactions. DESY 81-086 (1981); R. Plunkett: PhD Thesis Cornell University (1983)
G. Sterman, S. Weinberg: Phys. Rev. Lett.39, 1436 (1977); K. Shizuya S.-H. H. Tye: Phys. Rev. Lett.41, 787 (1978); M.B. Einhorn, B.G. Weeks: Nucl. Phys.B146, 445 (1978)
R. Horgan, M. Jacob: Nucl. Phys.B 179, 441 (1981)
ISAJET programme, written by F. Paige, S. Protopopescu: BNL report 31987 (1981)
R.D. Field, R.P. Feynman: Nucl. Phys.B 136, 1 (1978)
J.C. Collins, D.E. Soper: Phys. Rev.D 16, 2218 (1977)
Measurements of angular distributions from leading jet fragments can be found in: A.L.S. Angelis et al.: Nucl. Phys.B 209, 284 (1982); D. Drijard et al.: Phys. Lett.121B, 433 (1983)
B.L. Combridge, J. Kripfganz, J. Ranft: Phys. Lett.70B, 234 (1977)
T.A. de Grand, Y.G. Ng, S.H.H. Tye: Phys. Rev.D 16, 3251 (1977); J. Ellis, M.K. Gaillard, G.G. Ross: Nucl. Phys.B111, 253 (1976)
G. Altarelli, G. Parisi: Nucl. Phys.B 126, 298 (1977)
J.D. Bjorken: Phys. Rev.D 8, 4098 (1973)
R. Horgan, M. Jacob: op. cit.8, 4098 (1973) (curve A forE T <70 GeV) B. Humpert: private communication. The curves shown on Figs. 21 and 22 were calculated with Λ=0.5 GeV, 134-3 and parametrizations for the structure functions according to (curveA) the counting rule parametrization of J. Owens, E. Reya: Phys. Rev.D 17, 3003 (1978) or (curveBO R. Baier et al.: Z. Phys. C—Particles and Fields2, 265 (1979); B. Humpert: in preparation
W. Furmanski, H. Kowalski: CERN-EP/83-21 (1983); N.G. Antoniou et al.: LPTHE Orsay 83/4; Phys. Lett. B (in press); Z. Kunszt, E. Pietarinen: Ref. TH-3584 CERN (1983)
UA2 Collab. M. Banner et al.: Phys. Lett.122B, 476 (1983)
G. Ingelman: private communication
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UA2 Collaboration., Bagnaia, P., Banner, M. et al. Measurement of production and properties of jets at the CERN\(\bar pp\) collider. Z. Phys. C - Particles and Fields 20, 117–134 (1983). https://doi.org/10.1007/BF01573214
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DOI: https://doi.org/10.1007/BF01573214