TY - JOUR

T1 - QCD with Chiral Chemical Vector: Models Versus Lattices

AU - Андрианов, Александр Андреевич

AU - Андрианов, Владимир Андреевич

AU - Путилова, Алёна Евгеньевна

AU - Якубович, Александр Васильевич

AU - Espriu, D.

N1 - Funding Information: ACKNOWLEDGMENTS We thank the organizers of the 11th APCTP-BLTP JINR-PNPI NRC-SPbU Joint Workshop “Modern Problems in Nuclear and Elementary Particle Physics” Petergof, St.-Petersburg, 24–28 July 2017 for a fruitful meeting and an excellent atmosphere. A.A. and V.A. were supported by Grant RFBR projects 16-02-00348 and also got a financial support of SPbSU, in particular, by projects 11.41.417.2017, 11.42.697.2017, 11.42.698.2017, 11.41.1038.2017. As well this work has been supported through grants FPA2013-46570, 2014-SGR-104 and Consolider CPAN. Besides funding was provided by the Spanish MINECO under project MDM-2014-0369 of ICCUB (Unidad de Excelencia ‘Maria de Maeztu’).

PY - 2018/7

Y1 - 2018/7

N2 - A formation of Local Parity Breaking (LPB) in central heavy-ion collisions (HIC) at high energies is discussed. LPB in the fireball can be produced by a difference between the number densities of right- and left-handed chiral fermions (Chiral Imbalance) which is implemented by a chiral (axial) chemical potential. Based on the effective meson Lagrangian motivated by QCD in the chiral medium the properties of light scalar and pseudoscalar mesons (π, a 0) are analyzed. It is found that exotic decays of scalar mesons arise as a result of mixing of π and a 0 vacuum states in the presence of chiral imbalance. The pion electromagnetic formfactor obtains a parity-odd supplement which generates a photon polarization asymmetry in pion polarizability. We believe that the above-mentioned properties of LPB can be revealed in experiments on LHC, RHIC, CBM FAIR and NICA accelerators.

AB - A formation of Local Parity Breaking (LPB) in central heavy-ion collisions (HIC) at high energies is discussed. LPB in the fireball can be produced by a difference between the number densities of right- and left-handed chiral fermions (Chiral Imbalance) which is implemented by a chiral (axial) chemical potential. Based on the effective meson Lagrangian motivated by QCD in the chiral medium the properties of light scalar and pseudoscalar mesons (π, a 0) are analyzed. It is found that exotic decays of scalar mesons arise as a result of mixing of π and a 0 vacuum states in the presence of chiral imbalance. The pion electromagnetic formfactor obtains a parity-odd supplement which generates a photon polarization asymmetry in pion polarizability. We believe that the above-mentioned properties of LPB can be revealed in experiments on LHC, RHIC, CBM FAIR and NICA accelerators.

KW - chemical potential

KW - chiral imbalance

KW - chiral symmetry breaking

KW - quantum chromodynamics

KW - HEAVY-ION COLLISIONS

KW - AU COLLISIONS

KW - HOT

KW - VIOLATION

UR - http://www.scopus.com/inward/record.url?scp=85049559029&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/qcd-chiral-chemical-vector-models-versus-lattices

U2 - 10.1134/S1547477118040027

DO - 10.1134/S1547477118040027

M3 - Article

VL - 15

SP - 357

EP - 361

JO - Physics of Particles and Nuclei Letters

JF - Physics of Particles and Nuclei Letters

SN - 1547-4771

IS - 4

ER -