scholarly journals Enhancement of low-mass dileptons in ultraperipheral collisions

2021 ◽  
Vol 81 (4) ◽  
Author(s):  
I. M. Dremin ◽  
S. R. Gevorkyan ◽  
D. T. Madigozhin
Keyword(s):  
Dilepton Production ◽  
Nuclear Collisions ◽  
Two Photon ◽  
Low Mass ◽  
Nica Collider ◽  
Coulomb Attraction ◽  
Analogous Effect

AbstractIt is shown that production of low-mass $$e^+e^-$$ e + e - -pairs in ultraperipheral nuclear collisions is enhanced due to the Sommerfeld–Gamow–Sakharov (SGS) factor. This effect is especially strong near the threshold of creation of unbound $$e^+e^-$$ e + e - -pairs with low masses in the two-photon fusion. Coulomb attraction of the non-relativistic components of such pairs may lead to the increased intensity of 511 keV photons. It can be recorded at the NICA collider and has some astrophysical implications. The analogous effect can be observed at LHC in dilepton production.

scholarly journals In-medium vector meson properties and low-mass dilepton production from hot hadronic matter

2002 ◽  
Vol 66 (6) ◽  
Author(s):  
Amruta Mishra ◽  
Joachim Reinhardt ◽  
Horst Stöcker ◽  
Walter Greiner
Keyword(s):  
Vector Meson ◽  
Hadronic Matter ◽  
Dilepton Production ◽  
Low Mass

scholarly journals Low-mass dilepton production through transport processes in a quark-gluon plasma

2012 ◽  
Vol 85 (5) ◽  
Author(s):  
Yukinao Akamatsu ◽  
Hideki Hamagaki ◽  
Tetsuo Hatsuda ◽  
Tetsufumi Hirano
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Transport Processes ◽  
Dilepton Production ◽  
Low Mass

scholarly journals Low Mass Dimuons Produced in Relativistic Nuclear Collisions

2008 ◽  
Vol 100 (16) ◽  
Author(s):  
Jörg Ruppert ◽  
Charles Gale ◽  
Thorsten Renk ◽  
Peter Lichard ◽  
Joseph I. Kapusta
Keyword(s):  
Nuclear Collisions ◽  
Low Mass ◽  
Relativistic Nuclear Collisions

Two-photon creation of low-mass e+e-pairs in ppbar collisions at Tevatron energy

2001 ◽  
Vol 27 (8) ◽  
pp. 1735-1742 ◽  
Author(s):  
N M Shumeiko ◽  
A V Soroko ◽  
P M Starovoitov
Keyword(s):  
Two Photon ◽  
Low Mass

Dilepton production in thermal-dependent baryonic quark–gluon plasma

2014 ◽  
Vol 92 (1) ◽  
pp. 31-35 ◽  
Author(s):  
S. Somorendro Singh ◽  
Yogesh Kumar
Keyword(s):  
Production Rate ◽  
Quark Gluon Plasma ◽  
Chemical Potential ◽  
Gluon Plasma ◽  
Mass Region ◽  
Dilepton Production ◽  
Production Rates ◽  
Baryonic Chemical Potential ◽  
Low Mass ◽  
Quark Mass Dependence

We evolute a fireball of quark–gluon plasma (QGP) at thermal-dependent chemical potential (TDCP) through a statistical model in the pionic medium. The evolution of the fireball is explained through the free energy created in the pionic medium. We study the dilepton production at TDCP from such a fireball of QGP and hadronic phase. In this model, we take a finite quark mass dependence on temperature and parametrization factor. The temperature and factor enhance in the growth of the droplet formation of quarks and gluons as well as in the dilepton production rates. The production rate shows dilepton spectrum in the low mass region of the lepton pair as 0–1.2 GeV and in the intermediate mass region of 1.0–4.0 GeV. The rate of production is observed to be a strong increasing function of the TDCP for quark and antiquark annihilation. We compare the result of dilepton production at this TDCP with the production rate of the recent dilepton productions at zero and finite baryonic chemical potential and found the result far ahead in the production rates of dilepton at TDCP.

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