Properties of excited B-c states in QCD

Download

10.1016.j.nuclphysb.2019.114726.pdf

Date

2019-10-01

Author

Alıyev, Tahmasıb
Bilmiş, Selçuk

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

163
views

109
downloads

The mass and leptonic decay constants of recently observed two new excited B-c states at LHC are studied within the QCD sum rules. Considering the contributions of the ground and radially excited states, the mass and residues of the excited states of pseudoscalar and vector mesons are calculated in the framework of two different approaches of the QCD sum rules, namely, linear combinations of the corresponding sum rules and its derivatives as well as QCD sum rules with the incorporation of the least square fitting method. The obtained results on mass m(Bc)+(2S) = 6.88 +/- 0.03 GeV and m(Bc*)+(2S) = 6.94 +/- 0.03 GeV are in, good agreement with the experimental data. Our predictions for the decay constants of these states are: f(Bc)+(2S) = 0.42 +/- 0.02 GeV and f(Bc*)+(2S) = 0.46 +/- 0.01 GeV, which can be checked at future experiments to be conducted at the LHC. Comparison of our results with the predictions of the other approaches on mass and residues is also presented. (C) 2019 The Author(s). Published by Elsevier B.V.

Subject Keywords

Nuclear and High Energy Physics

URI

https://hdl.handle.net/11511/48458

Journal

NUCLEAR PHYSICS B

DOI

https://doi.org/10.1016/j.nuclphysb.2019.114726

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Thermodynamics of Lifshitz black holes Devecioglu, Deniz Olgu; Sarıoğlu, Bahtiyar Özgür (American Physical Society (APS), 2011-06-23) We apply the recently extended conserved Killing charge definition of Abbott-Deser-Tekin formalism to compute, for the first time, the energies of analytic Lifshitz black holes in higher dimensions. We then calculate the temperature and the entropy of this large family of solutions, and study and discuss the first law of black hole thermodynamics. Along the way we also identify the possible critical points of the relevant quadratic curvature gravity theories. Separately, we also apply the generalized Killin...
Investigations of spinodal dynamics in asymmetric nuclear matter within a stochastic relativistic model Yılmaz, Osman; ACAR, FERİDE PINAR; Saatci, S.; GÖKALP, AHMET (Springer Science and Business Media LLC, 2013-03-01) Early development of spinodal instabilities and density correlation functions in asymmetric nuclear matter are investigated in the stochastic extension of the Walecka-type relativistic mean field including coupling with rho meson. Calculations are performed under typical conditions encountered in heavy-ion collisions and in the crusts of neutron stars. In general, growth of instabilities occur relatively slower for increasing charge asymmetry of matter. At higher densities around rho = 0.4 rho(0) fluctuatio...
Measurements of properties of the Higgs boson decaying into the four-lepton final state in pp collisions at root s=13 TeV Sirunyan, A. M.; et. al. (Springer Science and Business Media LLC, 2017-11-01) Properties of the Higgs boson are measured in the H -> ZZ -> 4l (l = e, mu) decay channel. A data sample of proton-proton collisions at root s = 13 TeV, collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 35.9 fb(-1) is used. The signal strength modifier mu, defined as the ratio of the observed Higgs boson rate in the H -> ZZ -> 4l decay channel to the standard model expectation, is measured to be mu = 1.05(-0.17)(+0.19) at m(H) = 125.09 GeV, the combined ATLAS and CM...
Study of W boson production in pPb collisions at root(NN)-N-S=5.02 TeV Adam, W.; et. al. (Elsevier BV, 2015-11-01) The first study of W boson production in pPb collisions is presented, for bosons decaying to a muon or electron, and a neutrino. The measurements are based on a data sample corresponding to an integrated luminosity of 34.6 nb(-1) at a nucleon-nucleon centre-of-mass energy of root(NN)-N-S = 5.02 TeV, collected by the CMS experiment. The W boson differential cross sections, lepton charge asymmetry, and forward-backward asymmetries are measured for leptons of transverse momentum exceeding 25 GeV/c, and as a fu...
The mass and residues of radially and orbitally excited doubly heavy baryons in QCD Alıyev, Tahmasıb; Bilmiş, Selçuk (Elsevier BV, 2019-04-01) The mass and residues of the first radial and orbital excitations of J = 1/2 baryons containing two heavy quarks (b or c) are calculated within the QCD sum rules method. In calculations, the general forms of the interpolating currents with symmetric and anti-symmetric forms with respect to the exchange of heavy quarks have been used. Our results on the spectroscopic parameters of doubly heavy baryons are compared with the predictions of other theoretical approaches.

Citation Formats

T. Alıyev and S. Bilmiş, “Properties of excited B-c states in QCD,” NUCLEAR PHYSICS B, pp. 0–0, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48458.