Results 31 to 40 of about 117,601 (193)

B-meson mixing and lifetimes [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2006
$B_d$ and $B_s$ meson systems play a fundamental role to test and improve our understanding of Standard Model flavor dynamics. The mixing parameters $ m_{d,s}$ represent important constraints in the unitarity triangle analysis. Their theoretical estimates require non-perturbative calculations of B-meson decay constants and B-parameters; accurate ...
openaire   +2 more sources

Precision calculations of the double radiative bottom-meson decays in soft-collinear effective theory

open access: yesJournal of High Energy Physics, 2020
Employing the systematic framework of soft-collinear effective theory (SCET) we perform an improved calculation of the leading-power contributions to the double radiative B d,s -meson decay amplitudes in the heavy quark expansion by including the ...
Yue-Long Shen   +2 more
doaj   +1 more source

Semileptonic Decay of $B$-Meson into $D^{**}$ and the Bjorken Sum Rule [PDF]

open access: yes, 1996
We study the semileptonic branching fraction of $B$-meson into higher resonance of charmed meson $D^{**}$ by using the Bjorken sum rule and the heavy quark effective theory(HQET).
Bjorken   +15 more
core   +4 more sources

SU(3) analysis of fully-light tetraquarks in heavy meson weak decays

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We perform a SU(3) analysis for both semi-leptonic and non-leptonic heavy meson weak decays into a pseudoscalar meson and a fully-light tetraquark in 10 or 27 representation.
Yu-Ji Shi, Ye Xing, Zhen-Xing Zhao
doaj   +1 more source

Analysis of the $B \to K^*_2(1430), a_2(1320), f_2(1270)$ form-factors with light-cone QCD sum rules

open access: yes, 2011
In this article, we study the $B \to K^*_2(1430)$, $a_2(1320)$, $f_2(1270)$ form-factors with the light-cone QCD sum rules, where the $B$-meson light-cone distribution amplitudes are used. In calculations, we observe that the line-shapes of the $B$-meson
Ball P.   +4 more
core   +1 more source

Theoretical correction to the neutral $B^0$ meson asymmetry [PDF]

open access: yes, 2001
Certain types of asymmetries in neutral meson physics have not been treated properly, ignoring the difference of normalization factors with an assumption of the equality of total decay width.
Dunietz I., Groom D. E., J. C. YOON
core   +4 more sources

Reconstruction of B mesons

open access: yesPhysics Letters B, 1987
Abstract B mesons have been reconstructed in five decay channels of the type B →D ∗ ±nπ(n=1,2,3) using data accumulated by the ARGUS experiment at the e + e − storage ring DORIS II at DESY. In total, we find 40 neutral B mesons above a background of 15±6 events with a mass of (5278.2±1.0±3.0) MeV/ c 2 and 32 charged B mesons above a ...
H. Albrecht   +72 more
openaire   +3 more sources

The light invisible boson in FCNC decays of B and $$B_c$$ B c mesons

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
In this paper, we study the FCNC decay processes of B and $$B_c$$ B c meson, in which one invisible particle is emitted. Both the spin-0 and spin-1 cases are considered.
Geng Li   +3 more
doaj   +1 more source

B decays into two light pseudoscalar mesons and possible effects of enhanced b --> s g

open access: yes, 1998
We consider the branching ratios and CP asymmetry in the B meson decays into two pseudoscalar mesons in the generalized factorization approximation. We also investigate the possible effects of the enhanced chromomagnetic interaction b --> s g on these ...
Jang, Ji-Ho   +2 more
core   +1 more source

Measurement of the Spectroscopy of Orbitally Excited B Mesons at LEP [PDF]

open access: yes, 1999
We measure the masses, decay widths and relative production rate of orbitally excited B mesons using 1.25 million hadronic Z decays recorded by the L3 detector.
A. Aloisio   +434 more
core   +6 more sources

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