Inclusive photon production from [ital p[bar p]] collisions at [radical][ital s] =1. 8 TeV

Journal Article · Mon Sep 06 04:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.71.1490· OSTI ID:5947648

Alexopoulos, T; Allen, C; Anderson, E W; Balamurali, V; Banerjee, S; Beery, P D; Bhat, P; Bishop, J M; Biswas, N N; Bujak, A; Carmony, D D; Carter, T; Choi, Y; Cole, P; DeBonte, R; DeCarlo, V; Erwin, A R; Findeisen, C; Goshaw, A T; Gutay, L J ; Hirsch, A S; Hojvat, C; Jennings, J R; Kenney, V P; Lindsey, C S; Loomis, C; LoSecco, J M; McMahon, T; McManus, A P; Morgan, N; Nelson, K; Oh, S H; Porile, N T; Reeves, D; Rimai, A; Robertson, W J; Scharenberg, R P; Stampke, S R; Stringfellow, B C; Thompson, M; Turkot, F; Walker, W D; Wang, C H; Warchol, J; Wesson, D K; Zhan, Y ^[1]

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1. Department of Physics, DePauw University, Greencastle, Indiana 46135 (United States) Department of Physics, Duke University, Durham, North Carolina 27708-0305 (United States) Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States) Department of Physics, Iowa State University, Ames, Iowa 50011 (United States) Department of Physics, Universi

We report a measurement of the inclusive production of low-energy photons from [ital p[bar p]] collisions at [radical][ital s] =1.8 TeV. A NaI calorimeter located near [eta]=0 was used to measure the photon transverse momentum spectrum over the range 30[le][ital p][sub [ital t]][le]5000 MeV/[ital c]. The data are compared to the photon production expected from known particle decays in an attempt to isolate a low-energy direct photon signal. We find no evidence for excess photons above those expected from hadron decays and place an upper limit of 16% (90% C.L.) on any excess direct photons in the [ital p][sub [ital t]] range from 30 to 100 MeV/[ital c].

• OSTI ID: 5947648
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:10; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

662340* -- Hadron Interactions-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BOSONS
CALORIMETERS
DECAY
ELEMENTARY PARTICLES
HADRON-HADRON INTERACTIONS
INCLUSIVE INTERACTIONS
INTERACTIONS
LINEAR MOMENTUM
MASSLESS PARTICLES
MEASURING INSTRUMENTS
NUCLEON-ANTINUCLEON INTERACTIONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTONS
PROTON-ANTIPROTON INTERACTIONS
TRANSVERSE MOMENTUM