Dilepton helical production in a vortical quark-gluon plasma

نویسندگان

چکیده

In this paper, we propose an observable counting a weighted difference between right-handed and left-handed lepton pairs, which is coined dilepton helical rate. The weight the momentum of pairs projected onto auxiliary vector. We derive rate in quark-gluon plasma with vorticity limit when quark masses are ignored. find maximized vector parallel to vorticity, case it has nearly spherical oblate ellipsoidal distribution. that can be used as vortical-meter for plasma.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Quark dispersion relation and dilepton production in the quark-gluon plasma

Under very general assumptions we show that the quark dispersion relation in the quark-gluon plasma is given by two collective branches, of which one has a minimum at a nonvanishing momentum. This general feature of the quark dispersion relation leads to structures (van Hove singularities, gaps) in the low mass dilepton production rate, which might provide a unique signature for the quark-gluon...

متن کامل

Photon and dilepton production in the Quark-Gluon plasma: perturbation theory vs lattice QCD

This talk reviews the status of QCD calculations of photon and dilepton production rates in a Quark-Gluon plasma. Theses rates are known to order O(αs). Their calculations involve various resummations to account for well identified physical effects that are briefly described. Lattice calculations of the spectral functions give also access to the dilepton rates. Comparison with perturbative resu...

متن کامل

The Role of Gluons in Dilepton Production from the Quark-Gluon Plasma

We study high mass dilepton production from gluon-induced processes, gq → qγ , gq̄ → q̄γ, and gg → qq̄γ, in a thermally equilibrated but chemically under-saturated partonic matter that is expected to be created in the initial stage of ultra-relativistic heavy ion collisions. Regulating the divergence in these processes by the thermal quark mass, we find that gluon-induced processes are more import...

متن کامل

Photon production from a quark-gluon plasma.

In-medium interactions of a particle in a hot plasma are considered in the framework of thermal field theory. The formalism to calculate gauge invariant rates for photon and dilepton production from the medium is given. In the application to a QED plasma, astrophysical consequences are pointed out. The photon production rate from strongly interacting quarks in the quark–gluon plasma, which migh...

متن کامل

Photon production by a quark-gluon plasma

Photon or dilepton production by a hot plasma is expected to reflect rather cleanly the state of the system. Indeed, in the collision of two heavy nuclei, the typical size of the system is much smaller than the mean free path of particles that feel only the electromagnetic interactions, which enables photons and leptons to escape freely. However, it has been realized recently that those rates a...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: The European Physical Journal A

سال: 2022

ISSN: ['1434-6001', '1434-601X']

DOI: https://doi.org/10.1140/epja/s10050-022-00818-3