Observation and Properties of the Orbitally ExcitedBs2*Meson

Abstract

We report the direct observation of the excited L = 1 state B * s2 in fully reconstructed decays to B + K − . The mass of the B * s2 meson is measured to be 5839.6 ± 1.1 (stat.) ± 0.7 (syst.

HQET at order 1/m: II. Spectroscopy in the quenched approximation

“…In recent years, there has been significant progress in determining the spectrum of hadrons containing a b quark, both experimentally [1][2][3][4][5], and on the lattice [6][7][8][9][10]. A comparison of theory and experiment is of considerable interest for these hydrogen-like systems, in particular since Heavy Quark Effective Theory (HQET) [11][12][13][14] is applicable and is at the same time an important theoretical tool to isolate new physics in the flavor sector [15].…”

Isospin violating decays of positive parity $$B_s$$ B s mesons in HM $$\chi $$ χ PT

“…[5]. These authors determined the spectrum of B s 1P states and they found that the masses of B s1 (5830) 0 and B * s2 (5840) 0 agree very well with the experimental results [1][2][3][4]. They predicted also the existence of the spin zero positive parity state (J P = 0 + ) with the mass m B s0 = 5.711(13) (19) [10][11][12][22][23][24].…”

“…Two positive parity mesons B s states: the J P = 1 + state B s1 (5830) 0 and the J P = 2 + state B * s2 (5840) 0 were observed by the CDF and LHCb collaborations [1][2][3][4]. Recent lattice results [5,6], as well as other work [7][8][9][10][11][12][13][14][15], have indicated that the observed states are most likely members of the (1 + , 2 + ) doublet.…”

Observations and Measurements of Orbitally Excited L=1 B Mesons at the D0 Experiment

“…The ground state mesons applicable to this thesis are shown in Table 1.4, with their quark content, mass and isospin. For consistency with the numbers used in the analysis publications [3,4], the masses shown are from the PDG summary tables of 2006 [11]; there have been no significant changes since this time. …”