cb¯ spectrum and decay properties with coupled channel effects

Precision measurement of the $$ {B}_c^{+} $$ meson mass

“…Due to the presence of two heavy-flavour quarks the mass spectrum of the B c states can be predicted with much better precision than many other hadronic systems. The mass spectrum of the B c family has been calculated with nonrelativistic quark potential models [1][2][3][4][5][6][7][8], nonperturbative phenomenological models [9,10], perturbative QCD [11,12], relativistic quark models [13][14][15][16][17], and lattice QCD [18][19][20][21][22][23]. The ground state of the B c meson family, denoted hereafter as B + c , decays only through the weak interaction, with a relatively long lifetime.…”

Bottom-charmed meson spectrum from a QCD approach based on the Tamm-Dancoff approximation

“…Besides the functions V n , U n , and W n defined in Eqs. (10) and (11), the following auxiliary Z function has been also introduced:…”

“…On theoretical grounds, different perspectives have been taken to investigate the B c -meson spectrum as well as to understand its properties. For example, work can be found in the context of nonrelativistic quark models [8][9][10][11][12][13][14][15][16], relativistic constituent quark models [17][18][19][20][21][22], quantum chromodynamics (QCD) sum rules [23][24][25], lattice QCD [26][27][28], and approaches to the Dyson-Schwinger and Bethe-Salpeter equations [29]. The point here is that this miscellany of distinct approaches produces a frame to be contrasted with available and future experimental results, which in the end makes compelling comprehension of the B c state phenomenology possible.…”

Decay Constants of S Wave Heavy Quarkonia

“…Lattice QCD provides great hope in this direction and significant results are being reported [1,2]. Various other approaches widely used in the literature to study hadronic systems include QCD sum rules [14][15][16][17][18][19], nonrelativistic and relativistic potential models [20][21][22][23][24][25][26][27][28][29][30][32][33][34][35][36], effective field theory [37][38][39] and formalisms based on Bethe-Salpeter equation and Dyson-Schwinger equation [40][41][42][43][44][45][46][47][48][49]. Among theses QCD inspired potential models have been largely successful in explaining hadronic properties.…”