Bremsstrahlung production of low mass dielectrons in relativistic heavy ion collisions

Pal, Dipali; Haglin, Kevin; Srivastava, D. K.

doi:10.1103/physrevc.54.1366

Cited by 7 publications

(19 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally we give a brief Summary. With this we also conclude our study of soft electromagnetic radiations [14,15] initiated earlier.…”

Section: Introductionsupporting

confidence: 75%

“…[14]. The value of z min is obtained from λ(s 2 , m The strong interaction differential cross-section dσ qq /dt and dσ qg /dt for scattering of quarks and gluons are obtained from semi-phenomenological expressions used earlier by several authors for this purpose [9,14,15,19]. For hot hadronic matter, we have included the leading reactions:…”

Section: B Low Mass Dileptonsmentioning

confidence: 99%

“…, and π − π 0 → π − π 0 and evaluated the strong scattering cross-section from an effective Lagrangian incorporating σ, ρ, and f meson exchange [9,14,15].…”

Section: B Low Mass Dileptonsmentioning

confidence: 99%

“…[14] and references therein) in great detail and thus we shall only briefly recall the formulation in order to fix the notation.…”

Section: B Low Mass Dileptonsmentioning

confidence: 99%

See 3 more Smart Citations

Soft electromagnetic radiations from relativistic heavy ion collisions

et al. 1997

Self Cite

View full text Add to dashboard Cite

The production of low mass dileptons and soft photons from thermalized Quark Gluon Plasma (QGP) and hadronic matter in relativistic heavy ion collisions is evaluated. A boost invariant longitudinal and cylindrically symmetric transverse expansion of the systems created in central collision of lead nuclei at CERN SPS, BNL RHIC, and CERN LHC, and undergoing a first order phase transition to hadronic matter is considered. A large production of low mass (M < 0.3 GeV) dileptons, and soft photons (pT < 0.4 GeV) is seen to emanate from the bremsstrahlung of quarks and pions. We find an increase by a factor of 2-4 in the low mass dilepton and soft photon yield as we move from SPS to RHIC energies, and an increase by an order of magnitude as we move from SPS to LHC energies. Most of the soft radiations are found to originate from pion driven processes at SPS and RHIC energies, while at the LHC energies the quark and the pion driven processes contribute by a similar amount. The study of the transverse mass distribution is seen to provide interesting details of the evolution. We also find a unique universal behaviour for the ratio of M 2 weighted transverse mass distribution for M = 0.1 GeV to that for M = 0.2 and 0.3 GeV, as a function of MT , for SPS, RHIC, and LHC energies, in the absence of transverse expansion of the system. A deviation from this universal behaviour is seen as a clear indication of the flow. PACS number(s): 12.38. Mh, 13.85.Qk, 25.75.+r

show abstract

“…Finally we give a brief Summary. With this we also conclude our study of soft electromagnetic radiations [14,15] initiated earlier.…”

Section: Introductionsupporting

confidence: 75%

Section: B Low Mass Dileptonsmentioning

confidence: 99%

“…, and π − π 0 → π − π 0 and evaluated the strong scattering cross-section from an effective Lagrangian incorporating σ, ρ, and f meson exchange [9,14,15].…”

Section: B Low Mass Dileptonsmentioning

confidence: 99%

“…[14] and references therein) in great detail and thus we shall only briefly recall the formulation in order to fix the notation.…”

Section: B Low Mass Dileptonsmentioning

confidence: 99%

See 2 more Smart Citations

Soft electromagnetic radiations from relativistic heavy ion collisions

et al. 1997

Self Cite

View full text Add to dashboard Cite

show abstract

“…Through their invariant mass and momentum distributions, they carry to the detector information about the conditions and properties of the environment in which they are emitted, thus providing a glimpse deep into the bulk of the strongly interacting matter created in these collisions [1,2]. In particular, dileptons have been suggested as probes of the quarkgluon plasma (QGP) that is expected to be produced during the early stage of heavy-ion collisions at SuperProton-Synchrotron (SPS) energies [3][4][5][6][7][8][9][10].…”

mentioning

confidence: 99%

Dilepton production in nucleus-nucleus collisions at top CERN Super Proton Synchrotron energy of 158AGeV within the parton-hadron-string dynamics transport approach

et al. 2011

View full text Add to dashboard Cite

Dilepton production in In+In collisions at 158 A·GeV is studied within the microscopic partonhadron-string dynamics (PHSD) transport approach that incorporates explicit partonic degrees-offreedom, dynamical hadronization as well as the more familiar hadronic dynamics in the final reaction stages. A comparison to the data of the NA60 Collaboration shows that the measured dilepton yield is well described by including the collisional broadening of vector mesons, while simultaneously accounting for the electromagnetic radiation of the strongly coupled quark-gluon plasma (sQGP) via off-shell quark-antiquark annihilation, quark annihilation with additional gluon Bremsstrahlung and the gluon-Compton scattering mechanisms. In particular, the spectra in the intermediate mass range (1 GeV ≤ M ≤ 2.5 GeV) are dominated by quark-antiquark annihilation in the nonperturbative QGP. Also, the observed softening of the transverse mass spectra at intermediate masses (1 GeV ≤ M ≤ 2.5 GeV) is approximately reproduced. Furthermore, for dileptons of low masses (M < 0.6 GeV), we find a sizeable contribution from the quark annihilation with additional gluon bremsstrahlung, thus providing another possible window for probing the properties of the sQGP.PACS numbers: 25.75.Cj, 25.75.Nq, 24.85.+p,

show abstract

Low Mass Dilepton Production at the CERN SPS

Drees

1999

Nuclear Matter in Different Phases and Transitions

View full text Add to dashboard Cite

Bremsstrahlung production of low mass dielectrons in relativistic heavy ion collisions

Cited by 7 publications

References 24 publications

Soft electromagnetic radiations from relativistic heavy ion collisions

Soft electromagnetic radiations from relativistic heavy ion collisions

Dilepton production in nucleus-nucleus collisions at top CERN Super Proton Synchrotron energy of 158AGeV within the parton-hadron-string dynamics transport approach

Low Mass Dilepton Production at the CERN SPS

Contact Info

Product

Resources

About