Pseudoscalar and vector open-charm mesons at finite temperature

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.

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Studies of hadronic B decays to final states containing open charm mesons at LHCb

10.22323/1.174.0251 ◽

2013 ◽

Author(s):

Alexandra Martin Sanchez

Keyword(s):

Open Charm ◽

Final States ◽

B Decays ◽

Charm Mesons

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Open charm and charmonium states in strong magnetic fields

International Journal of Modern Physics E ◽

10.1142/s0218301321500646 ◽

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.

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Physics with Open Charm Mesons at P̄ANDA

10.1063/1.2130137 ◽

2005 ◽

Author(s):

A. Sokolov

Keyword(s):

Open Charm ◽

Charm Mesons

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

Journal of High Energy Physics ◽

10.1007/jhep11(2021)225 ◽

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.

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