MEASUREMENTS OF BRANCHING FRACTIONS AND CP ASYMMETRIES IN HADRONIC B DECAYS WITH η MESON IN THE FINAL STATE

2005 ◽  
Author(s):  
P. CHANG
Keyword(s):  
Branching Fractions ◽  
B Decays ◽  
Final State ◽  
Cp Asymmetries

scholarly journals Global CP asymmetries in charmless three-body B decays with final state interactions

2021 ◽  
pp. 136824
Author(s):  
I. Bediaga ◽  
T. Frederico ◽  
P.C. Magalhães ◽  
D. Torres Machado
Keyword(s):  
B Decays ◽  
Final State ◽  
Final State Interactions ◽  
Three Body ◽  
Cp Asymmetries

scholarly journals Indication for Large Rescatterings in Charmless Rare B Decays

2003 ◽  
Vol 18 (25) ◽  
pp. 1763-1772 ◽  
Author(s):  
Chun-Khiang Chua ◽  
Wei-Shu Hou ◽  
Kwei-Chou Yang
Keyword(s):  
B Decays ◽  
Final State ◽  
Decay Data ◽  
Σ Phase ◽  
Rare B Decays ◽  
Phase Differences ◽  
Cp Asymmetries

The current wealth of charmless B decay data may suggest the presence of final state rescattering. In a factorized amplitude approach, better fits are found by incorporating two SU(3) rescattering phase differences, giving δ ~ 65° and σ ~ 90°–100°. Fitting with unitarity phase ϕ3 as a fit parameter gives ϕ3 ~ 96°, the CP asymmetries Aπ π, Sπ π agree better with BaBar, and the σ phase is slightly lower. Keeping ϕ3=60° fixed in fit gives Sπ π ~ -0.9, which agrees better with Belle. With the sizable δ, σ rescattering phases as fitted, many direct CP asymmetries flip sign, and B0→π0π0, K-K+ rates are of order 10-6, which can be tested soon.

scholarly journals Effects of Final-State Interactions in Hadronic B Decays

2006 ◽  
Vol 21 (04) ◽  
pp. 650-657 ◽  
Author(s):  
Hai-Yang Cheng
Keyword(s):  
B Decays ◽  
Final State ◽  
Final State Interactions ◽  
Cp Asymmetries

Final-state rescattering effects on the hadronic B decays and their impact on direct and mixing-induced CP asymmetries are examined. Implications for some phenomenologies are briefly discussed.

scholarly journals RECENT τ LEPTON RESULTS FROM BABAR

2014 ◽  
Vol 35 ◽  
pp. 1460440
Author(s):  
ALBERTO LUSIANI
Keyword(s):  
Standard Model ◽  
Branching Fractions ◽  
Charged Particles ◽  
Babar Collaboration ◽  
Final States ◽  
Final State ◽  
Experimental Knowledge ◽  
Electron Positron ◽  
The Standard Model ◽  
Positron Collisions

We report recent measurements on τ leptons obtained by the BABAR collaboration using the entire recorded sample of electron-positron collisions at and around the Υ(4S) (about 470fb-1). The events were recorded at the PEP-II asymmetric collider at the SLAC National Accelerator Laboratory. The measurements include high multiplicity τ decay branching fractions with 3 or 5 charged particles in the final state, a search for the second class current the τ decay τ → πη′ν, τ branching fractions into final states containing two KS mesons, [Formula: see text], with h = π, K, and preliminary measurements of hadronic spectra of τ decays with three hadrons (τ- → h-h+h-ντ decays, where h = π, K). The results improve the experimental knowledge of the τ lepton properties and can be used to improve the precision tests of the Standard Model.

CHARMFUL BARYONIC $B\, \to \,{\rm{B\bar B}}'M_{c}$ DECAYS

2009 ◽  
Vol 24 (18n19) ◽  
pp. 3638-3644 ◽  
Author(s):  
YU-KUO HSIAO
Keyword(s):  
Branching Fraction ◽  
B Decays ◽  
Final State ◽  
Three Body

We study the charmful three-body baryonic B decays with D(*) or J/Ψ in the final state. We explain the measured rates of [Formula: see text], [Formula: see text], and [Formula: see text]. In particular, the branching fraction of [Formula: see text] predicted to be of order 2.3 × 10-6 is in accordance with the Belle measurement, [Formula: see text].

scholarly journals Study of Rare Mesonic Decays Involving Di-Neutrinos in Their Final State

2018 ◽  
Vol 2018 ◽  
pp. 1-20
Author(s):  
Azeem Mir ◽  
Farida Tahir ◽  
Shakeel Mahmood ◽  
Shi- Hai Dong
Keyword(s):  
Branching Fractions ◽  
New Physics ◽  
Supersymmetric Model ◽  
Final State ◽  
Yukawa Couplings ◽  
Leptonic Decays ◽  
Pseudoscalar Mesons ◽  
Theoretical Predictions ◽  
Minimal Supersymmetric Model

We have studied phenomenological implication of R-parity violating (Rp) Minimal Supersymmetric Model (MSSM) via analyses of pure leptonic (M→νν¯) and semileptonic decays of pseudoscalar mesons (M→Xνν¯). These analyses involve comparison between theoretical predictions made by Rp MSSM and the Standard Model (SM) with the experimental results like branching fractions (Br) of the said process. We have found, in general, that Rp contribution dominates over the SM contribution, i.e., by a factor of 10 for the pure leptonic decays of KL,S and by 102 and 104 in case of Bs and Bd, respectively. Furthermore, the limits obtained on Rp Yukawa couplings (λαkβ′λαkγ′⁎) by using Br  (M→Xνν¯) are used to calculate Br  (M→νν¯). This demonstrates the role of Rp MSSM as a viable model for the study of new physics contribution in rare decays at places like Super B factories, KOTO (J-PARC) and NA62 at CERN.

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