Dilepton emission and the QCD phase transition in ultrarelativistic nuclear collisions

Kajantie, K.; Kapusta, Joseph I.; McLerran, Larry; Mekjian, A. Z.

doi:10.1103/physrevd.34.2746

Cited by 263 publications

(212 citation statements)

References 30 publications

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“…If the phase-space distribution for the quark jets f jet (p) is replaced by the thermal distribution f th (p) in Eq. (17), one can obtain the yield for producing thermal dileptons as [3] …”

Section: Jet-dilepton Conversionmentioning

confidence: 99%

Jet-dilepton conversion in expanding quark-gluon plasma

Fu¹,

Qin²

2015

Phys. Rev. C

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We calculate the production of large mass dileptons from the jet-dilepton conversion in the expanding quark-gluon plasma at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) energies. The jet-dilepton conversion exceeds the thermal dilepton production and Drell-Yan process in the large mass region of 3.9 GeV< M <5.8 GeV and 6.3 GeV< M <8.7 GeV in central Pb+Pb collisions at √ sNN =2.76 TeV and 5.5 TeV, respectively. We present the numerical solution of ideal fluid hydrodynamics. We find that the transverse flow leads to a rapid cooling of the fire ball. The suppression due to transverse flow is appeared from small to large mass, the transverse flow effect becomes important at LHC energies. The energy loss of jets in the hot and dense medium is also included.

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“…If the phase-space distribution for the quark jets f jet (p) is replaced by the thermal distribution f th (p) in Eq. (17), one can obtain the yield for producing thermal dileptons as [3] …”

Section: Jet-dilepton Conversionmentioning

confidence: 99%

Jet-dilepton conversion in expanding quark-gluon plasma

Fu¹,

Qin²

2015

Phys. Rev. C

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“…Dileptons, like photons, are emitted from every stage of a heavy-ion collision, from the pre-equilibrium stage [24], the quark-gluon fluid [25][26][27][28][29][30][31][32], and the late hadronic matter [33][34][35][36][37][38]. An interesting outcome of dilepton emission studies has been the confirmation of medium modifications of the spectral properties of ρ mesons [37,39].…”

Section: Dilepton Emission Rates and Spectramentioning

confidence: 99%

Elliptic flow of thermal dileptons in relativistic nuclear collisions

et al. 2007

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We calculate the transverse momentum and invariant mass dependence of elliptic flow of thermal dileptons for Au+Au collisions at the Relativistic Heavy Ion Collider. The system is described using hydrodynamics, with the assumption of formation of a thermalized quark-gluon plasma at some early time, followed by cooling through expansion, hadronization, and decoupling. Dileptons are emitted throughout the expansion history: by annihilation of quarks and antiquarks in the early quark-gluon plasma stage and through a set of hadronic reactions during the late hadronic stage. The resulting differential elliptic flow exhibits a rich structure, with different dilepton mass windows providing access to different stages of the expansion history. Elliptic flow measurements for dileptons, combined with those of hadrons and direct photons, are a powerful tool for mapping the time evolution of heavy-ion collisions.

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“…The QGP signal continues to outshine the (primordial) Drell-Yan yield up to about M ≃ 3 GeV (similar features have been found in refs. [59,45]). Taken together, the total sum exhibits a noticeable change in slope between 1 and 4 GeV.…”

Section: B Dilepton Spectramentioning

confidence: 99%

Signatures of thermal dilepton radiation at ultrarelativistic energies

2001

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The properties of thermal dilepton production from heavy-ion collisions in the RHIC energy regime are evaluated for invariant masses ranging from 0.5 to 3 GeV. Using an expanding thermal fireball to model the evolution through both quark-gluon and hadronic phases various features of the spectra are addressed. In the low-mass region, due to an expected large background, the focus is on possible medium modifications of the narrow resonance structures from ω and φ mesons, whereas in the intermediate-mass region the old idea of identifying QGP radiation is reiterated including effects of chemical under-saturation in the early stages of central Au+Au collisions.

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Dilepton emission and the QCD phase transition in ultrarelativistic nuclear collisions

Cited by 263 publications

References 30 publications

Jet-dilepton conversion in expanding quark-gluon plasma

Jet-dilepton conversion in expanding quark-gluon plasma

Elliptic flow of thermal dileptons in relativistic nuclear collisions

Signatures of thermal dilepton radiation at ultrarelativistic energies

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