Research output: Contribution to journal › Article › peer-review
Clusters of Cold Dense Nuclear Matter and Their Registration with the MPD Vertex Detector. / Vechernin, V. V.
In: Physics of Particles and Nuclei, Vol. 52, No. 4, 01.07.2021, p. 604-608.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Clusters of Cold Dense Nuclear Matter and Their Registration with the MPD Vertex Detector
AU - Vechernin, V. V.
N1 - Publisher Copyright: © 2021, Pleiades Publishing, Ltd.
PY - 2021/7/1
Y1 - 2021/7/1
N2 - Abstract: We estimate the yields of particles at central rapidities and large transverse momenta in the region outside NN-kinematics (the so-called cumulative region) in AuAu collisions. We suppose that particles in this kinematical region are produced by scattering from the clusters of cold dense quark–gluon matter present inside nuclei—the nuclear “fluctons”. We found that in this new cumulative region the yields of pions compared to the yields of protons will be less suppressed at the same value of the cumulative number, in contrast with the situation in a traditional cumulative region of nucleus fragmentation. This effect is caused by a stronger decrease of the cumulative proton yield with transverse momentum compared to pions. That could be evidence of the different formation mechanisms of these cumulative particles—the coherent coalescence (recombination) of three flucton quarks for a proton and the fragmentation of one flucton quark for a pion. We also discuss the need to use the future internal vertex tracker of MPD at NICA for the suppression of the contribution from the event pile-up when registering the particles formed from fragmentation of the flucton residue.
AB - Abstract: We estimate the yields of particles at central rapidities and large transverse momenta in the region outside NN-kinematics (the so-called cumulative region) in AuAu collisions. We suppose that particles in this kinematical region are produced by scattering from the clusters of cold dense quark–gluon matter present inside nuclei—the nuclear “fluctons”. We found that in this new cumulative region the yields of pions compared to the yields of protons will be less suppressed at the same value of the cumulative number, in contrast with the situation in a traditional cumulative region of nucleus fragmentation. This effect is caused by a stronger decrease of the cumulative proton yield with transverse momentum compared to pions. That could be evidence of the different formation mechanisms of these cumulative particles—the coherent coalescence (recombination) of three flucton quarks for a proton and the fragmentation of one flucton quark for a pion. We also discuss the need to use the future internal vertex tracker of MPD at NICA for the suppression of the contribution from the event pile-up when registering the particles formed from fragmentation of the flucton residue.
KW - HIGH TRANSVERSE-MOMENTA
KW - SPECTRA
UR - http://www.scopus.com/inward/record.url?scp=85114318153&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/58b3c2a7-bac2-3cbd-9e85-00a94a0fa354/
U2 - 10.1134/s1063779621040596
DO - 10.1134/s1063779621040596
M3 - Article
AN - SCOPUS:85114318153
VL - 52
SP - 604
EP - 608
JO - Physics of Particles and Nuclei
JF - Physics of Particles and Nuclei
SN - 1063-7796
IS - 4
ER -
ID: 85638447