Masses and strong decay properties of radially excited bottom states B(2S) and B(2P) with their strange partners Bs(2S) and Bs(2P)

Abstract

are studied in our previous work [7] where their J P 's are assigned as 1P 3 2 2 + , 2S 1 2 0 − , 2S 1 2 1 − , 1D 5 2 2 − , 1D 5 2 3 − , 2P 1 2 1 + and 2P 1 2 0 + respectively. Observing the bottom spectroscopy, it is realized that unlike the success in charm sector, experimental information on higher excited bottom states is scare. Till now, only ground state bottom mesons for B(1S) and excited P-wave mesons B(1P ) with s l = 3/2 along with their strange partners are experimentally available [8-12]. Recently in 2015, LHCb has observed new bottom mesons, which have diverted theorists interest towards the bottom sector. LHCb collaboration studied B + π − and B 0 π − mass distributions by analyzing the pp collisions at center-of-mass energies of 7 and 8 TeV and observed four bottom states B 1 (5721), B * 2 (5747), B J (5840) 0,+ and B J (5960) 0,+ [13]. The results for B J (5960) 0,+ are reported as:M = 5969.20 ± 2.9 ± 5.1 MeV and decay width Γ = 82.3 ± 7.7 ± 9.4 MeV Also

Placing the newly observed state BJ(5840) in bottom spectra along with states BGupta1, Upadhyay2 2019Phys. Rev. DSelf Cite133140View full textAdd to dashboardCite

“…[28], where Liu and Lu have used the relativistic quark model. In our previous work [29], where masses were predicted using the QCD and 1=m Q corrections to the flavor independent parameters Δ F and λ F , B J ð5960Þ is again favored to be the 2S1 − state. But Lu et al, in Ref.…”

Placing the newly observed state $B_{J}(5840)$ in bottom spectra along with states $B_{1}(5721)$, $B_{2}^{*}(5747)$, $B_{s1}(5830)$, $B_{2s}^{*}(5840)$ and $B_{J}(5970)$

“…This prediction is also supported by work in [28] , where the authors have used the relativistic quark model. In our previous work [29], where masses were predicted using the QCD and 1/m Q corrections to the flavor independent parameters ∆ F and λ F , B J (5960) is again favored to be the 2S1 − state. But, Qi-Fang Lu et.…”

Masses of 2S single heavy baryons using non-perturbative parameters in HQET

“…MeV, and term containing λ c 2 in D meson has a contribution of -105.46 MeV and in D * meson has 35.153 MeV. For term containing λ 1 in B and B * mesons, their contribution is about 186.96 MeV 2 and term containing λ 2 in B, contribution is 34.00 MeV and in B * meson, contribution is only 11.33 The S-wave charm and bottom mesons are shown for both n = 1 and 2.The masses are taken from PDG[5] and[39]. All masses are in MeV.…”