Open-flavor heavy hadron production in heavy-ion collisions

Abstract

We study the production of open-flavor heavy hadrons in relativistic heavy-ion collisions. The hadronization in the quark-gluon plasma is described in the quark coalescence model. We evaluated yields and transverse momentum distributions. A simultaneous study of conventional and exotic hadrons is carried out. The Wigner functions are evaluated using hadron wave functions obtained from a single realistic quark model. Thus, results are presented in a single framework for the production of open-flavor heavy mesons, baryons, and exotic tetraquarks, in particular: <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"> <msup> <mi>D</mi> <mn>0</mn> </msup> </math> , <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"> <msup> <mi>B</mi> <mn>0</mn> </msup> </math> , <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"> <msub> <mi mathvariant="normal">Λ</mi> <mi>Q</mi> </msub> </math> , <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"> <msub> <mi mathvariant="normal">Σ</mi> <mi>Q</mi> </msub> </math> , <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"> <msub> <mi mathvariant="normal">Ξ</mi> <mi>Q</mi> </msub> </math> , <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"> <msub> <mi mathvariant="normal">Ξ</mi> <mrow> <mi>Q</mi> <msup> <mi>Q</mi> <mo>′</mo> </msup> </mrow> </msub> </math> , and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"> <msub> <mi>T</mi> <mrow> <mi>Q</mi> <msup> <mi>Q</mi> <mo>′</mo> </msup> </mrow> </msub> </math> ( <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"> <mi>Q</mi> <mo>,</mo> <msup> <mi>Q</mi> <mo>′</mo> </msup> <mo>=</mo> <mi>c</mi> </math> or <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"> <mi>b</mi> </math> ). The consequences of a partial restoration of chiral symmetry at the hadronization temperature are studied in detail.