Transport properties of bottomed mesons in a hot mesonic gas

Abstract

In this work we evaluate the B-meson drag and diffusion coefficients in a hot medium constituted of light mesons (pions, kaons and eta mesons). We treat the B-meson and B*-meson interaction with pseudo-Goldstone bosons in chiral perturbation theory at next-to-leading order within the constraints from heavy quark symmetry, and employ standard unitarization techniques of NLO amplitudes in order to account for dynamically generated resonances (leading to a more efficient heavy-flavor diffusion) and thus reach higher temperatures. We estimate individual meson contributions from the gas to the transport coefficients and perform a comparison with other findings in literature. We report a bottom relaxation length of about 80 fm at a temperature of 150 MeV and for typical momenta of 1 GeV, at which our approach is reliable. Compared to a charm relaxation length of 40 fm in the same conditions, we conclude that the B mesons provide a cleaner probe of the early stages of a heavy-ion collision.

arXiv comment14 pages, 16 figures, 3 tables. Version published in Phys.Rev.D87, 034019 (2013). Only minor improvements with respect to v1: corrected typos, further clarifications and updated references

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Cited by in corpus (24)

• Tomography of the Quark-Gluon-Plasma by Charm Quarks
• Open Heavy Flavor in QCD Matter and in Nuclear Collisions
• Charm production in Pb+Pb collisions at the Large Hadron Collider energy
• Heavy-Quark Diffusion in the Quark-Gluon Plasma
• D-meson propagation in hot dense matter
• Open charm and dileptons from relativistic heavy-ion collisions
• Open bottom states and the anti-B meson propagation in hadronic matter
• Open bottom mesons in hot asymmetric hadronic medium
• Diffusion of ${\Lambda }_c$ in hot hadronic medium and its impact on ${\Lambda }_c/D$ ratio
• Single electrons from heavy-flavor mesons in relativistic heavy-ion collisions
• Charm and Bottom Hadrons in Hot Hadronic Matter
• Transport coefficients of heavy baryons
• In-medium kinetic theory of $D$ mesons and heavy-flavor transport coefficients
• Heavy flavor suppression: role of hadronic matter
• Elliptic flow and $R_{AA}$ of D mesons at FAIR comparing the UrQMD hybrid model and the coarse-graining approach
• Strange and heavy mesons in hadronic matter
• Impact of unitarization on the $J/\psi$-light meson cross section
• D-meson diffusion in hadronic matter
• Heavy mesons in a hadronic medium: interaction and transport coefficients
• Quarkonium interactions with (hot) hadronic matter
• Hadronic effects on charmonium elliptic flows in heavy-ion collisions
• A random walk with heavy flavours
• Impact of isospin asymmetric nuclear medium on pseudoscalar and vector $B$ mesons
• Soft interactions in jet quenching