Direct photon cross sections in proton-proton and antiproton-proton interactions at $\sqrt{s} = 24.3$ GeV

We report results on inclusive direct photon $(\gamma), \pi_0$, and $\eta$ production in both pp and \={p}p interactions at $\sqrt{s} = 24.3 $ GeV in the transverse momentum range {$4.1 \le p_T \le 7 .7$ GeV/$c$} and rapidity range \mbox{$-0.1 \le y \le 0.9$}. The data were collected between 1988 an...

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Detalles Bibliográficos
Autores principales: Ballocchi, G, Breedon, R E, Camilleri, L L, Comtat, C, Cool, R L, Cox, P T, Cushman, P B, Dick, Louis, Dukes, E C, Giacomelli, P, Hubbard, D B, Jeanneret, J B, Joseph, C L, Kubischta, Werner, Morel, Christian, Nguyen-Mau, C, Oberson, P, Overseth, O E, Pagès, J L, Perroud, Jean-Pierre, Rügger, D, Rusack, R W, Singh, V M, Snow, G A, Sozzi, G, Studer, L, Tran, M T, Vacchi, A, Valenti, G, Werlen, M
Lenguaje:eng
Publicado: 1998
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(98)01001-6
http://cds.cern.ch/record/365280
Descripción
Sumario:We report results on inclusive direct photon $(\gamma), \pi_0$, and $\eta$ production in both pp and \={p}p interactions at $\sqrt{s} = 24.3 $ GeV in the transverse momentum range {$4.1 \le p_T \le 7 .7$ GeV/$c$} and rapidity range \mbox{$-0.1 \le y \le 0.9$}. The data were collected between 1988 and 1990 by the UA6 experiment at CERN, which employed an internal $\mathrm{H_2}$ gas jet target in the S\={p}pS collider. The inclusive direct photon cross sections and the cross section difference \mbox{$\sigma(\overline{p}p) - \sigma(pp)$} expressed as functions of $p_T(\gamma)$ are compared w ith next-to-leading order QCD predictions.

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