scholarly journals Effects of Zb states and bottom meson loops on ϒ(4S)→ϒ(1S,2S)π+π− transitions

2017 ◽  
Vol 95 (3) ◽  
Author(s):  
Yun-Hua Chen ◽  
Martin Cleven ◽  
Johanna T. Daub ◽  
Feng-Kun Guo ◽  
Christoph Hanhart ◽  
...  
Keyword(s):  
Bottom Meson

CONSTRAINTS FOR THE DIQUARK COUPLINGS FROM QUARK→ QUARK+PHOTON TRANSITIONS

1988 ◽  
Vol 03 (04) ◽  
pp. 373-380 ◽  
Author(s):  
J. MAALAMPI ◽  
A. PIETILÄ ◽  
I. VILJA
Keyword(s):  
Dipole Moment ◽  
Electric Dipole ◽  
Branching Ratio ◽  
Bottom Meson ◽  
Coupling Constants ◽  
Meson Decay ◽  
Gauge Model ◽  
Superstring Theory ◽  
Upper Limits ◽  
Low Energies

The significance of the diquark couplings f6QQh and f7ucdchc is studied in a SU(3)× SU(2)×U(1) 1)×U(1)′ gauge model derived from the E6 superstring theory at low energies. For this purpose, the electric dipole moment of the neutron and the branching ratio of the radiative bottom meson decay, B→K*γ, arising from these couplings are claculated. A comparison with the experimental upper limits gives typically the bound Im f6f7≲10−4 for the coupling constants.

Topological diagram analysis of bottom meson decays emitting two pseudoscalar mesons

2015 ◽  
Vol 12 (2) ◽  
pp. 230-237 ◽  
Author(s):  
Maninder Kaur ◽  
Rohit Dhir ◽  
Avinash Sharma ◽  
R. C. Verma
Keyword(s):  
Bottom Meson ◽  
Meson Decays ◽  
Pseudoscalar Mesons ◽  
Diagram Analysis

scholarly journals The charmed and bottom meson spectrum from lattice NRQCD

2001 ◽  
Vol 93 (1-3) ◽  
pp. 192-195 ◽  
Author(s):  
Randy Lewis ◽  
R.M. Woloshyn
Keyword(s):  
Bottom Meson ◽  
Meson Spectrum

Search for Possible Signatures of Bottom-Meson Production inp-Fe Interactions at 400 GeV/c

1980 ◽  
Vol 44 (8) ◽  
pp. 507-510 ◽  
Author(s):  
A. Diamant-Berger ◽  
J. P. Dishaw ◽  
M. Faessler ◽  
J. K. Liu ◽  
F. S. Merritt ◽  
...  
Keyword(s):  
Meson Production ◽  
Bottom Meson

T-odd and CP-odd triple momentum correlations in the exclusive semi-leptonic bottom meson decay

1990 ◽  
Vol 242 (1) ◽  
pp. 119-127 ◽  
Author(s):  
J.G. Körner ◽  
K. Schilcher ◽  
Y.L. Wu
Keyword(s):  
Bottom Meson ◽  
Meson Decay

scholarly journals Importance of Nonperturbative QCD Parameters for Bottom Mesons

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
A. Upadhyay ◽  
M. Batra
Keyword(s):  
Heavy Quark ◽  
Mass Splitting ◽  
Bottom Meson ◽  
Effective Theory ◽  
Heavy Quark Effective Theory ◽  
Flavor Symmetries ◽  
Fitted Parameter ◽  
Nonperturbative Qcd ◽  
Meson States ◽  
Theory Formula

The importance of nonperturbative quantum chromodynamics (QCD) parameters is discussed in context to the predicting power for bottom meson masses and isospin splitting. In the framework of heavy quark effective theory, the work presented here focuses on the different allowed values of the two nonperturbative QCD parameters used in heavy quark effective theory formula, and using the best fitted parameter, masses of the excited bottom meson states injp=1/2+doublet in strange and nonstrange sectors are calculated here. The calculated masses are found to be matching well with experiments and other phenomenological models. The mass splitting and hyperfine splitting have also been analyzed for both strange and nonstrange heavy mesons with respect to spin and flavor symmetries.

Sign in / Sign up

Export Citation Format

Share Document