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Title: | V0 production in p+A collisions at √s = 41.6 GeV |
Author: | Conde, P. Garrido Beltrán, Lluís Peralta, D. HERA-B Collaboration |
Keywords: | Astronomia Astrofísica Teoria quàntica de camps Models de corda Física nuclear Partícules (Física nuclear) Astronomy Astrophysics Quantum field theory String models Nuclear physics Particles (Nuclear physics) |
Issue Date: | 2009 |
Publisher: | Società Italiana di Fisica & Springer Verlag |
Abstract: | Inclusive doubly differential cross sections d 2 σ pA /dx F dp T 2 as a function of Feynman-x (x F ) and transverse momentum (p T ) for the production of K S 0 , Λ and Λ¯ in proton-nucleus interactions at 920 GeV are presented. The measurements were performed by HERA-B in the negative x F range (−0.12<x F <0.0) and for transverse momenta up to p T =1.6 GeV/c. Results for three target materials: carbon, titanium and tungsten are given. The ratios of production cross sections are presented and discussed. The Cronin effect is clearly observed for all three V 0 species. The atomic number dependence is parameterized as σ pA =σ pN ⋅A α where σ pN is the proton-nucleon cross section. The measured values of α are all near one. The results are compared with EPOS 1.67 and PYTHIA 6.3. EPOS reproduces the data to within ≈20% except at very low transverse momentum. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1140/epjc/s10052-009-1005-3 |
It is part of: | European Physical Journal C, 2009, vol. 61, num. 2, p. 207-221 |
URI: | http://hdl.handle.net/2445/56278 |
Related resource: | http://dx.doi.org/10.1140/epjc/s10052-009-1005-3 |
ISSN: | 1434-6044 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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