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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
Teoria quàntica de camps
Models de corda
Física nuclear
Partícules (Física nuclear)
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:
It is part of: European Physical Journal C, 2009, vol. 61, num. 2, p. 207-221
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ISSN: 1434-6044
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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