Quark-mass dependence of the three-flavor QCD phase diagram at zero and imaginary chemical potential: Model prediction

Abstract We present results for the two-loop helicity amplitudes entering the NLO QCD corrections to the production of a Higgs boson in association with a Z -boson in gluon fusion. The two-loop integrals, involving massive top quarks, are calculated numerically. Results for the interference of the finite part of the two-loop amplitudes with the Born amplitude are shown as a function of the two kinematic invariants on which the amplitudes depend.

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Quarkonia Formation in a Holographic Gravity–Dilaton Background Describing QCD Thermodynamics

Particles ◽

10.3390/particles4020015 ◽

2021 ◽

Vol 4 (2) ◽

pp. 159-177

Author(s):

Rico Zöllner ◽

Burkhard Kämpfer

Keyword(s):

Quark Mass ◽

Heavy Ion ◽

Mass Dependence ◽

Holographic Model ◽

Spectral Functions ◽

Special Aspect ◽

Quark Masses ◽

Ion Collisions ◽

Heavy Quark Mass ◽

Quark Mass Dependence

A holographic model of probe quarkonia is presented, where the dynamical gravity–dilaton background was adjusted to the thermodynamics of 2 + 1 flavor QCD with physical quark masses. The quarkonia action was modified to account for the systematic study of the heavy-quark mass dependence. We focused on the J/ψ and Υ spectral functions and related our model to heavy quarkonia formation as a special aspect of hadron phenomenology in heavy-ion collisions at LHC.

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Vector meson form factors and their quark-mass dependence

Physical Review C ◽

10.1103/physrevc.77.025203 ◽

2008 ◽

Vol 77 (2) ◽

Cited By ~ 91

Author(s):

M. S. Bhagwat ◽

P. Maris

Keyword(s):

Vector Meson ◽

Quark Mass ◽

Form Factors ◽

Mass Dependence ◽

Quark Mass Dependence

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Exact quark-mass dependence of the Higgs-photon form factor at three loops in QCD

Journal of High Energy Physics ◽

10.1007/jhep04(2021)196 ◽

2021 ◽

Vol 2021 (4) ◽

Author(s):

Marco Niggetiedt

Keyword(s):

Form Factor ◽

Higgs Boson ◽

Quark Mass ◽

Variable Mass ◽

High Energy ◽

Mass Dependence ◽

Leading Order ◽

Energy Limit ◽

Quark Mass Dependence

Abstract We follow up on our discussion of the exact quark-mass dependence of the Higgs-gluon form factor at three loops in QCD [1] and turn our attention to the closely related Higgs-photon form factor. Similarly to our previous work, we intend to examine the form factor for the decay of a Higgs-boson with variable mass into two photons at the three-loop level in QCD. The set of master integrals is known numerically due to prior work on the Higgs-gluon form factor and is exploited to obtain expansions around the threshold as well as in the high-energy limit. Our results may be utilised to derive the photonic decay rate of the Higgs-boson through next-to-next-to-leading order.

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Full top quark mass dependence in Higgs boson pair production at NLO

Journal of High Energy Physics ◽

10.1007/jhep10(2016)107 ◽

2016 ◽

Vol 2016 (10) ◽

Cited By ~ 79

Author(s):

S. Borowka ◽

N. Greiner ◽

G. Heinrich ◽

S.P. Jones ◽

M. Kerner ◽

...

Keyword(s):

Higgs Boson ◽

Pair Production ◽

Top Quark ◽

Quark Mass ◽

Mass Dependence ◽

Top Quark Mass ◽

Boson Pair ◽

Boson Pair Production ◽

Quark Mass Dependence

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Quark mass dependence of masses and decay constants of the pseudo-Goldstone bosons in QCD

The European Physical Journal C ◽

10.1140/epjc/s2003-01321-3 ◽

2003 ◽

Vol 31 (2) ◽

pp. 227-238 ◽

Cited By ~ 15

Author(s):

F. Farchioni ◽

◽

I. Montvay ◽

E. Scholz ◽

L. Scorzato

Keyword(s):

Quark Mass ◽

Mass Dependence ◽

Decay Constants ◽

Goldstone Bosons ◽

Quark Mass Dependence

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Using the Linear Sigma Model with quarks to describe the QCD phase diagram and to locate the critical end point

EPJ Web of Conferences ◽

10.1051/epjconf/201817208002 ◽

2018 ◽

Vol 172 ◽

pp. 08002

Author(s):

Alejandro Ayala ◽

Jorge David Castaño-Yepes ◽

José Antonio Flores ◽

Saúl Hernández ◽

Luis Hernández

Keyword(s):

Phase Diagram ◽

Critical Temperature ◽

Sigma Model ◽

Chemical Potential ◽

Linear Sigma Model ◽

Transition Line ◽

Baryon Chemical Potential ◽

First Order ◽

Qcd Phase Diagram ◽

Crossover Transition

We study the QCD phase diagram using the linear sigma model coupled to quarks. We compute the effective potential at finite temperature and quark chemical potential up to ring diagrams contribution. We show that, provided the values for the pseudo-critical temperature Tc = 155 MeV and critical baryon chemical potential μBc ≃ 1 GeV, together with the vacuum sigma and pion masses. The model couplings can be fixed and that these in turn help to locate the region where the crossover transition line becomes first order.

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Imaginary Chemical Potential, NJL-Type Model and Confinement–Deconfinement Transition

Symmetry ◽

10.3390/sym11040562 ◽

2019 ◽

Vol 11 (4) ◽

pp. 562 ◽

Cited By ~ 3

Author(s):

Kouji Kashiwa

Keyword(s):

Phase Diagram ◽

Finite Temperature ◽

Crucial Role ◽

Chemical Potential ◽

Type Model ◽

Qcd Phase Diagram

In this review, we present of an overview of several interesting properties of QCD at finite imaginary chemical potential and those applications to exploring the QCD phase diagram. The most important properties of QCD at a finite imaginary chemical potential are the Roberge–Weiss periodicity and the transition. We summarize how these properties play a crucial role in understanding QCD properties at finite temperature and density. This review covers several topics in the investigation of the QCD phase diagram based on the imaginary chemical potential.

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