3 research outputs found
Pion and Kaon Spectra from Distributed Mass Quark Matter
After discussing some hints for possible masses of quasiparticles in quark
matter on the basis of lattice equation of state, we present pion and kaon
transverse spectra obtained by recombining quarks with distributed mass and
thermal cut power-law momenta as well as fragmenting by NLO pQCD with intrinsic
{and nuclear} broadening.Comment: Talk given at SQM 200
Production in p+A Collisions at = 41.6 GeV.
Inclusive doubly differential cross sections d^2\sigma_{pA}/dx_Fdp_T^2 as a
function of Feynman-x (x_F) and transverse momentum (p_T) for the production of
K^0_s, Lambda^0 and anti-Lambda^0 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 \sigma_{pA} = \sigma_{pN} \cdot A^\alpha where \sigma_{pN} is
the proton-nucleon cross section. The measured values of \alpha are all near
one. The results are compared with EPOS 1.67 and PYTHIA 6.3. EPOS reproduces
the data to within \approx 20% except at very low transverse momentum.Comment: 17 pages, 9 figures, 8 tables; minor revisions based on comments from
the journal refere