scholarly journals Pseudoscalar and vector open-charm mesons at finite temperature

2020 ◽  
Vol 102 (9) ◽  
Author(s):  
Glòria Montaña ◽  
Àngels Ramos ◽  
Laura Tolos ◽  
Juan M. Torres-Rincon
Keyword(s):  
Finite Temperature ◽  
Open Charm ◽  
Charm Mesons

scholarly journals Open-charm mesons in nuclear matter at finite temperature beyond the zero-range approximation

2011 ◽  
Vol 84 (1) ◽  
Author(s):  
C. E. Jiménez-Tejero ◽  
A. Ramos ◽  
L. Tolós ◽  
I. Vidaña
Keyword(s):  
Nuclear Matter ◽  
Finite Temperature ◽  
Open Charm ◽  
Charm Mesons ◽  
Zero Range

scholarly journals The Small Acceptance Vertex Detector of NA61/SHINE

2018 ◽  
Vol 171 ◽  
pp. 21001
Author(s):  
M. Deveaux ◽  
A. Aduszkiewicz ◽  
Y. Ali ◽  
M. Baszczyk ◽  
W. Brylinski ◽  
...  
Keyword(s):  
Heavy Ion Collisions ◽  
Particle Production ◽  
Heavy Ion ◽  
Open Charm ◽  
Collision System ◽  
Charm Mesons ◽  
Vertex Detector ◽  
Charmonium Production ◽  
Ion Collisions ◽  
Diagnostic Probe

Charmonium production in heavy ion collisions is considered as an important diagnostic probe for studying the phase diagram of strongly interacting matter for potential phase transitions. The interpretation of existing data from the CERN SPS is hampered by a lack of knowledge on the properties of open charm particle production in the fireball. Moreover, open charm production in heavy ion collisions by itself is poorly understood. To overcome this obstacle, the NA61/SHINE was equipped with a Small Acceptance Vertex Detector (SAVD), which is predicted to make the experiment sensitive to open charm mesons produced in A-A collisions at the SPS top energy. This paper will introduce the concept and the hardware of the SAVD. Moreover, first running experience as obtained in a commissioning run with a 150 AGeV/c Pb+Pb collision system will be reported.

scholarly journals Open charm and charmonium states in strong magnetic fields

2021 ◽  
pp. 2150064
Author(s):  
Amruta Mishra ◽  
S. P. Misra
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Constituent Quark ◽  
Open Charm ◽  
Charm Mesons ◽  
Strong Magnetic Fields ◽  
Decay Widths ◽  
State Formula ◽  
The Masses ◽  
The Magnetic Field

The mass modifications of the open charm ([Formula: see text] and [Formula: see text]) mesons, and their effects on the decay widths [Formula: see text] as well as of the charmonium state, [Formula: see text] to open charm mesons ([Formula: see text]), are investigated in the presence of strong magnetic fields. These are studied accounting for the mixing of the pseudoscalar ([Formula: see text]) and vector ([Formula: see text]) mesons ([Formula: see text], [Formula: see text] mixings), with the mixing parameter, [Formula: see text] of a phenomenological three-point ([Formula: see text]) vertex interaction determined from the observed radiative decay width of [Formula: see text]. For charged [Formula: see text] mixing, this parameter is dependent on the magnetic field, because of the Landau level contributions to the vacuum masses of these mesons. The masses of the charged [Formula: see text] and [Formula: see text] mesons modified due to [Formula: see text] mixing, in addition, have contributions from the lowest Landau levels in the presence of a strong magnetic field. The effects of the magnetic field on the decay widths are studied using a field theoretical model of composite hadrons with quark (and antiquark) constituents. The matrix elements for these decays are evaluated using the light quark–antiquark pair creation term of the free Dirac Hamiltonian for the constituent quark field, with explicit constructions for the charmonium state [Formula: see text], the open charm ([Formula: see text], [Formula: see text], [Formula: see text]) mesons and the pion states in terms of the constituent quark fields. The parameter for the charged [Formula: see text] mixing is observed to increase appreciably with increase in the magnetic field. This leads to dominant modifications to their masses, and hence the decay widths of charged [Formula: see text] as well as [Formula: see text] at large values of the magnetic field. The modifications of the masses and decay widths of the open and hidden charm mesons in the presence of strong magnetic fields should have observable consequences on the production of the open charm ([Formula: see text] and [Formula: see text]) mesons as well as of the charmonium states resulting from noncentral ultra-relativistic heavy ion collision experiments.

scholarly journals Measurement of prompt open-charm production cross sections in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

2021 ◽  
Vol 2021 (11) ◽  
Author(s):  
◽  
A. Tumasyan ◽  
W. Adam ◽  
F. Ambrogi ◽  
T. Bergauer ◽  
...  
Keyword(s):  
Cross Sections ◽  
Theoretical Calculations ◽  
Production Cross ◽  
Center Of Mass ◽  
Open Charm ◽  
Charm Mesons ◽  
Proton Proton ◽  
Proton Collisions ◽  
Center Of Mass Energy ◽  
Proton Proton Collisions

Abstract The production cross sections for prompt open-charm mesons in proton-proton collisions at a center-of-mass energy of 13 TeV are reported. The measurement is performed using a data sample collected by the CMS experiment corresponding to an integrated luminosity of 29 nb−1. The differential production cross sections of the D∗±, D±, and D0$$ \left({\overline{\mathrm{D}}}^0\right) $$ D ¯ 0 mesons are presented in ranges of transverse momentum and pseudorapidity 4 < pT< 100 GeV and |η| < 2.1, respectively. The results are compared to several theoretical calculations and to previous measurements.

scholarly journals Production of open-charm mesons in relativistic heavy-ion collisions

2018 ◽  
Vol 98 (1) ◽  
Author(s):  
Shuang Li ◽  
Chaowen Wang ◽  
Xianbao Yuan ◽  
Shengqin Feng
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Open Charm ◽  
Relativistic Heavy Ion Collisions ◽  
Charm Mesons ◽  
Ion Collisions

scholarly journals Open charm in nuclear matter at finite temperature

2008 ◽  
Vol 77 (1) ◽  
Author(s):  
L. Tolós ◽  
A. Ramos ◽  
T. Mizutani
Keyword(s):  
Nuclear Matter ◽  
Finite Temperature ◽  
Open Charm
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