2012/11/30 by Luciano M. Abreu, Daniel Cabrera, Juan M. Torres-Rincon +1 · 1 citation
Physics and Astronomy · #Amplitude #Boson #D meson #Eta meson #High-Energy Particle Collisions Research #Meson #Nuclear physics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.87.034019
published as Physical Review D 87, Issue 3, 034019 (2013) · 14 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
openalex publication_date 2013/02/12 · arxiv created 2013/02/13 · arxiv updated 2013/02/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this work we evaluate the B-meson drag and diffusion coefficients in a hot medium constituted of light mesons (\ensuremathπ, K, K, and \ensuremathη). We treat the B-meson and B*-meson interactions 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 next-to-leading order 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.