scholarly journals Measurement of the Exclusive and Inclusive Branching Fractions of $B^{0}_{s} \to D^{(*)+}_{s}D^{(*)-}_{s}$ Decays at CDF and its Implications on the Decay Width Difference in the $B^{0}_{s}-B^{-0}_{s}$ Meson System

2011 ◽  
Author(s):  
Dominik Horn
Keyword(s):  
Decay Width ◽  
Branching Fractions ◽  
Width Difference ◽  
Meson System

scholarly journals Probing new physics with $B^0_s\to\mu^+\mu^-$: Status and perspectives

2014 ◽  
Vol 29 (21) ◽  
pp. 1444004 ◽  
Author(s):  
Robert Fleischer
Keyword(s):  
Standard Model ◽  
Decay Width ◽  
Rare Decay ◽  
Branching Ratio ◽  
New Physics ◽  
High Luminosity ◽  
Width Difference ◽  
Rate Asymmetry ◽  
The Standard Model ◽  
Meson System

The rare decay [Formula: see text] plays a key role for the testing of the Standard Model. It is pointed out that the sizable decay width difference ΔΓsof the Bs-meson system affects this channel in a subtle way. As a consequence, its calculated Standard Model branching ratio has to be upscaled by about 10%. Moreover, the sizable ΔΓsmakes a new observable through the effective [Formula: see text] lifetime accessible, which probes New Physics in a way complementary to the branching ratio and adds an exciting new topic to the agenda for the high-luminosity upgrade of the LHC. Further probes of New Physics are offered by a CP-violating rate asymmetry. Correlations between these observables and the [Formula: see text] branching ratio are illustrated for specific models of New Physics.

scholarly journals Measurement ofCPviolation and theBs0meson decay width difference withBs0→J/ψK+K−andBs0→J/ψπ+π−decays

2013 ◽  
Vol 87 (11) ◽  
Author(s):  
R. Aaij ◽  
C. Abellan Beteta ◽  
B. Adeva ◽  
M. Adinolfi ◽  
C. Adrover ◽  
...  
Keyword(s):  
Decay Width ◽  
Width Difference

scholarly journals First study of the CP-violating phase and decay-width difference in Bs0→ψ(2S)ϕ decays

2016 ◽  
Vol 762 ◽  
pp. 253-262 ◽  
Author(s):  
R. Aaij ◽  
B. Adeva ◽  
M. Adinolfi ◽  
Z. Ajaltouni ◽  
S. Akar ◽  
...  
Keyword(s):  
Decay Width ◽  
Width Difference

scholarly journals Measurement of Lifetime and Decay-Width Difference inBs0→J/ψϕDecays

2008 ◽  
Vol 100 (12) ◽  
Author(s):  
T. Aaltonen ◽  
A. Abulencia ◽  
J. Adelman ◽  
T. Akimoto ◽  
M. G. Albrow ◽  
...  
Keyword(s):  
Decay Width ◽  
Width Difference

scholarly journals Measurement of the CP-violating phase ϕ s and the B s 0 meson decay width difference with B s 0  → J/ψϕ decays in ATLAS

2016 ◽  
Vol 2016 (8) ◽  
Author(s):  
G. Aad ◽  
◽  
B. Abbott ◽  
J. Abdallah ◽  
O. Abdinov ◽  
...  
Keyword(s):  
Decay Width ◽  
Meson Decay ◽  
Width Difference

scholarly journals Measurement of the CP-violating weak phase ϕs and the decay width difference ΔΓs using the Bs0→J/ψϕ(1020) decay channel in pp collisions at s=8 TeV

2016 ◽  
Vol 757 ◽  
pp. 97-120 ◽  
Author(s):  
V. Khachatryan ◽  
A.M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
E. Asilar ◽  
...  
Keyword(s):  
Decay Width ◽  
Decay Channel ◽  
Pp Collisions ◽  
Width Difference ◽  
Weak Phase ◽  
8 Tev

scholarly journals Next-to-leading-order QCD corrections to a vector bottomonium radiative decay into a charmonium

2021 ◽  
Vol 2021 (12) ◽  
Author(s):  
Yu-Dong Zhang ◽  
Feng Feng ◽  
Wen-Long Sang ◽  
Hong-Fei Zhang
Keyword(s):  
Decay Width ◽  
Radiative Decay ◽  
Branching Fraction ◽  
Branching Fractions ◽  
Leading Order ◽  
Good Opportunity ◽  
Decay Widths ◽  
Helicity Amplitudes ◽  
Order Of Magnitude ◽  
Theory And Experiment

Abstract Within the framework of nonrelativistic QCD (NRQCD) factorization, we calculate the next-to-leading-order (NLO) perturbative corrections to the radiative decay Υ → ηc(χcJ) + γ. Both the helicity amplitudes and the helicity decay widths are obtained. It is the first computation for the processes involving both bottomonium and charmonium at two-loop accuracy. By employing the Cheng-Wu theorem, we are able to convert most of complex-valued master integrals (MIs) into real-valued MIs, which makes the numerical integration much efficient. Our results indicate the $$ \mathcal{O}\left({\alpha}_s\right) $$ O α s corrections are moderate for ηc and χc2 production, and are quite marginal for χc0 and χc1 production. It is impressive to note the NLO corrections considerably reduce the renormalization scale dependence in both the decay widths and the branching fractions for χcJ, and slightly improve that for ηc. With the NRQCD matrix elements evaluated via the Buchmüller-Tye potential model, we find the decay width for ηc production is one-order-of-magnitude larger than χcJ production, which may provide a good opportunity to search for Υ → ηc + γ in experiment. In addition, the decay width for χc1 production is several times larger than those for χc0,2. Finally, we find the NLO NRQCD prediction for the branching fraction of Υ → χc1 + γ is only half of the lower bound of the experimental data measured recently by Belle. Moreover, there exists serious contradiction between theory and experiment for Υ → ηc + γ. The discrepancies between theory and experiment deserve further research efforts.

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