Direct photon cross sections in proton-proton and antiproton-proton interactions at √s=24.3 GeV

被引：49

作者：

Ballocchi, G

Breedon, RE

Camilleri, L

Comtat, C

Cool, RL

Cox, PT

Cushman, P

Dick, L

Dukes, EC

Giacomelli, P

Hubbard, DB

Jeanneret, JB

Joseph, C

Kubischta, W

Morel, C

Nguyen, MC

Oberson, P

Overseth, OE

Pages, JL

Perroud, JP

Ruegger, D

Rusack, RW

Singh, VM

Snow, GR

Sozzi, G

Studer, L

Tran, MT

Vacchi, A

Valenti, G

Werlen, M

机构：

[1] CERN, CH-1211 Geneva 23, Switzerland

[2] Univ Lausanne, CH-1015 Lausanne, Switzerland

[3] Univ Michigan, Ann Arbor, MI 48109 USA

[4] Rockefeller Univ, New York, NY 10021 USA

[5] Yale Univ, New Haven, CT 06511 USA

来源：

PHYSICS LETTERS B | 1998年 / 436卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(98)01001-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report results on inclusive direct photon (gamma),pi(0), and eta production in both pp and <(p)over bar p> interactions at root s = 24.3 GeV in the transverse momentum range 4.1 less than or equal to p(T) less than or equal to 7.7 GeV/c and rapidity range -0.1 less than or equal to y less than or equal to 0.9. The data were collected between 1988 and 1990 by the UA6 experiment at CERN, which employed an internal H-2 gas jet target in the <S(p)over bar pS> collider. The inclusive direct photon cross sections and the cross section difference sigma(<(p)over bar p>) - sigma(pp) expressed as functions of p(T)(gamma) are compared with next-to-leading order QCD predictions. (C) 1998 Published by Elsevier Science B.V. AII rights reserved.

引用

页码：222 / 230

页数：9

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