Open bottom mesons in a hot asymmetric hadronic medium

Pathak, Divakar; Mishra, Amruta

doi:10.1103/physrevc.91.045206

Cited by 34 publications

(32 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To understand the medium modification of D mesons it is important to understand their production and its collective flow in the medium. It became possible due to the experimental facility at Jefferson Lab, USA [25], in which CEBAF accelerator is used to produce the continous beam of electrons and these are [27][28][29]. The QCD sum rules were used in [30][31][32][33][34][35] to evaluate the masses and decay constants of D and B mesons at finite density of nuclear matter.…”

Section: Introductionmentioning

confidence: 99%

In-medium pseudoscalar D/B mesons and charmonium decay width

Chhabra

Kumar

2017

Eur. Phys. J. A

View full text Add to dashboard Cite

Using QCD sum rules and chiral SU(3) model, we investigate the effect of temperature, density, strangeness fraction and isospin asymmetric parameter on the shift in masses and decay constants of the pseudoscalar D and B meson in hadronic medium, which consist of nucleons and hyperons. The in-medium properties of D and B mesons within QCD sum rule approach depend upon the quark and gluon condensates. In chiral SU(3) model, quark and gluon condensates are introduced through the explicit symmetry breaking term and the trace anomaly property of the QCD, respectively and are written in terms of scalar fields σ, ζ, δ and χ. Hence, through medium modification of σ, ζ, δ and χ fields, we obtain the medium modified masses and decay constants of D and B mesons. As an application, using 3 P 0 model, we calculate the in-medium decay width of the higher charmonium states ψ(3686), ψ(3770) and χ(3556) to the DD pairs, considering the in-medium mass of D mesons. These results may be important to understand the possible outcomes of high energy physics experiments, e.g., CBM and PANDA at GSI, Germany.

show abstract

Section: Introductionmentioning

confidence: 99%

In-medium pseudoscalar D/B mesons and charmonium decay width

Chhabra

Kumar

2017

Eur. Phys. J. A

View full text Add to dashboard Cite

show abstract

“…MeV [49] in the present work. The values of the parameters λ 1 and λ 2 are then calculated using equations (21), (22) and (23), and, using the mass of the B(B) meson (in vacuum) as 5279 MeV. These values turn out to be 0.1975 and 0.8025, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…In the present work, we study the effects of the medium effects on the decay widths of the Υ → BB, arising from the medium modifications of the masses of Υ as well as the B and [22]. The medium modifications of the bottomonium masses, on the other hand, arise from the medium modifications of the gluon condensate in the hadronic medium.…”

Section: The Model For Composite Hadronsmentioning

confidence: 99%

Decay widths of bottomonium states in matter: A field theoretic model for composite hadrons

Mishra

Misra

2017

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

We compute the in-medium partial decay widths of the bottomonium states to open bottom mesons (BB) using a field theoretical model for composite hadrons with quark constituents. These decay widths are calculated by using the explicit constructions for the bottomonium states and the open bottom mesons (B andB), and, the quark antiquark pair creation term of the free DiracHamiltonian written in terms of the constituent quark field operators. These decay widths in the hadronic medium are calculated as arising from the mass modifications of the bottomonium states and the B andB mesons, obtained in a chiral effective model. The decay amplitude in the present model is multiplied with a strength parameter for the light quark pair creation, which is fitted from the observed vacuum partial decay width of the bottomonium state, Υ(4S) to BB. The effects of the isospin asymmetry, the strangeness fraction of the hadronic matter on the decay widths, arising due to the mass modifications due to these effects, have also been studied. There is observed to be appreciable effects from density, and the effects from isospin asymmetry on the parital decay widths of Υ → BB are observed to be quite pronounced at high densities. These effects should show up in the asymmetric heavy ion collisions in Compressed baryonic matter (CBM) experiments planned at the future facility at FAIR. The study of the Υ states will, however, require access to energies higher than the energy regime planned at the CBM experiment. The density effects on the decay widths of the bottomonium states should show up in the production of these states, as well as, in dilepton spectra at the Super Proton Synchrotron (SPS) energies.

show abstract

“…In the present calculations, we neglect the fluctuation of ζ b ∼ b b , due to the reason that the fluctuation of the heavy quark condensates are small in the medium [58].…”

Section: B Andb Mesons In Magnetized Nuclear Mattermentioning

confidence: 99%

Open bottom mesons in asymmetric nuclear matter in the presence of strong magnetic fields

Dhale

et al. 2018

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

The modifications of the masses of the B andB mesons in asymmetric nuclear matter in the presence of strong magnetic fields, are investigated using a chiral effective model. The medium modifications of these open bottom mesons arise due to their interactions with the scalar mesons and the nucleons. In the magnetized nuclear matter, the proton has contributions from the Landau levels. In the chiral effective model, the masses of the B andB mesons are calculated from the leading term, namely the vectorial Weinberg Tomozawa term as well as from the next to leading order contributions, i.e., due to the scalar exchange and the range terms. Due to the Weinberg-Tomozawa term, theB mesons experience an attractive interaction in the symmetric nuclear matter, whereas the B mesons have a repulsive interaction. Inclusion of the contributions from the scalar exchange and the range terms as well, leads to drop of the masses of both B and B mesons. The effect of the isospin asymmetry breaks the mass degeneracy of the B + and B 0 (as well as of the B − andB 0 ) mesons, and its effect is observed to be large at high densities. The effects of anomalous magnetic moments of the nucleons are taken into account in the present study of the masses of the open bottom mesons in magnetized nuclear matter. * Electronic address:

show abstract

Open bottom mesons in a hot asymmetric hadronic medium

Cited by 34 publications

References 79 publications

In-medium pseudoscalar D/B mesons and charmonium decay width

In-medium pseudoscalar D/B mesons and charmonium decay width

Decay widths of bottomonium states in matter: A field theoretic model for composite hadrons

Open bottom mesons in asymmetric nuclear matter in the presence of strong magnetic fields

Contact Info

Product

Resources

About