scholarly journals Measurement of the Branching Fraction And Search for Direct CP-Violation in the B+- --> J/Psi Pi+- Decay Mode at BaBar

2006 ◽  
Author(s):  
Francesco Fobozzi
Keyword(s):  
Cp Violation ◽  
Decay Mode ◽  
Branching Fraction

scholarly journals Measurement of branching fraction and search for CP violation in B→ϕϕK

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
S. Mohanty ◽  
A. B. Kaliyar ◽  
V. Gaur ◽  
G. B. Mohanty ◽  
I. Adachi ◽  
...  
Keyword(s):  
Cp Violation ◽  
Branching Fraction

scholarly journals CONCLUDING REMARKS

2002 ◽  
Vol 17 (24) ◽  
pp. 3500-3508 ◽  
Author(s):  
NICOLA CABIBBO
Keyword(s):  
Cp Violation ◽  
Standard Model ◽  
Theoretical Prediction ◽  
Decay Mode ◽  
Solar Neutrino ◽  
Neutrino Oscillations ◽  
Expected Value ◽  
Sudbury Neutrino Observatory ◽  
The Standard Model ◽  
First Results

Important new results have been presented at this conference. The direct violation of CP in K0 → π + π has been firmly established in two independent experiments, NA48 at CERN and KTeV at Fermilab. Both Babar at SLAC and Belle at Kek have determined the CP violation in [Formula: see text] oscillations through the study of the golden KS + Ψ decay mode. The observed CP violation agrees with the expectations of the Standard model, based on the quark-mixing phenomenon. The first results of the Sudbury Neutrino Observatory, SNO, suggest that the long-lasting solar neutrino puzzle has been finally solved in terms of neutrino oscillations. Results appeared after the conference which modify the theoretical prediction of the muon anomaly. This new result, if confirmed, would drastically reduce the significance of the discrepancy between the theoretically expected value for the muon anomaly and the recent results of the Brookhaven experiment.

scholarly journals HEAVY QUARK LIFETIMES, MIXING AND CP VIOLATION

2000 ◽  
Vol 15 (10) ◽  
pp. 1393-1414
Author(s):  
GUY BLAYLOCK
Keyword(s):  
Cp Violation ◽  
Heavy Quark ◽  
Heavy Quark Physics ◽  
Branching Fraction ◽  
New Physics ◽  
Unitarity Triangle ◽  
Lifetime Measurements ◽  
Physics First ◽  
Charm Decay ◽  
Charm Mixing

This paper emphasizes four topics that represent some of the year's highlights in heavy quark physics. First of all, a review is given of charm lifetime measurements and how they lead to better understanding of the mechanisms of charm decay. Secondly, the CLEO collaboration's new search for charm mixing is reported, which significantly extends the search for new physics in that sector. Thirdly, important updates in Bs mixing are summarized, which result in a new limit on ΔMs, and which further constrain the unitarity triangle. Finally, the first efforts to measure CP violation in the B system are discussed. Results are shown for the CDF and ALEPH measurements of sin 2β, as well as the CLEO branching fraction measurements of B→Kπ, ππ, which have implications for future measurements of α.

RIGHT-HANDED COUPLINGS AND CP VIOLATION IN W BOSON DECAY

1992 ◽  
Vol 07 (33) ◽  
pp. 3101-3108
Author(s):  
MINORU TANAKA
Keyword(s):  
Angular Distribution ◽  
Cp Violation ◽  
Decay Mode ◽  
W Boson ◽  
Linear Collider ◽  
Relative Magnitude ◽  
Polarization Measurement ◽  
Final State ◽  
Order Of Magnitude ◽  
The Right

Parity and CP violation in W boson decay are discussed. It is shown that CP test is possible by measuring the angular distribution in a W boson non-suppressed two-body decay mode without the polarization measurement of the final state fermions. We found that LEP200 and next linear collider (NLC) have non-trivial sensitivity on the right-handed coupling and CP violation. LEP200 will slightly improve the present limit on the right-handed coupling in the [Formula: see text] coupling, and have sensitivity on the relative magnitude of the CP violation to the P violation up to 8×10−2. NLC will improve the former by some factor or even an order of magnitude, and have sensitivity on the latter up to 10−3–10−2.

OBSERVATION OF SEMILEPTONIC B DECAYS INTO ORBITALLY EXCITED D FINAL STATES

2005 ◽  
Vol 20 (16) ◽  
pp. 3660-3663
Author(s):  
◽  
Sudhir Malik
Keyword(s):  
Decay Mode ◽  
B Mesons ◽  
Branching Fraction ◽  
Semileptonic Decays ◽  
Final States ◽  
B Decays ◽  
Semileptonic B Decays

Using 250 pb-1 of data collected with the DØ detector in Run II of the Tevatron, the two narrow (L = 1) states, D1(2420) and [Formula: see text] have been observed in semileptonic decays of B mesons. Results on the D*+ π- decay mode are presented including a measurement of the branching fraction of B mesons to these states.

scholarly journals Search for CP Violation and Measurement of the Branching Fraction in the Decay D0→KS0KS0

2017 ◽  
Vol 119 (17) ◽  
Author(s):  
N. Dash ◽  
S. Bahinipati ◽  
V. Bhardwaj ◽  
K. Trabelsi ◽  
I. Adachi ◽  
...  
Keyword(s):  
Cp Violation ◽  
Branching Fraction

scholarly journals DIRECT CP VIOLATION AND NEW PHYSICS EFFECTS IN THE DECAY MODE B+→ϕK+

2004 ◽  
Vol 19 (25) ◽  
pp. 1903-1918 ◽  
Author(s):  
ANJAN K. GIRI ◽  
RUKMANI MOHANTA
Keyword(s):  
Cp Violation ◽  
Standard Model ◽  
Decay Mode ◽  
Percent Level ◽  
New Physics ◽  
Supersymmetric Model ◽  
Beyond The Standard Model ◽  
Cp Asymmetry ◽  
Penguin Diagram ◽  
The Standard Model

We study the direct CP violation effect in the decay mode B+→ϕK+. This decay mode is dominated by the loop induced [Formula: see text] penguin diagram with a tiny contribution from the annihilation diagram. Therefore, the standard model expectation of direct CP violation is negligibly small. Using QCD factorization approach we find the CP asymmetry in the standard model to be at percent level. We consider then two scenarios beyond the standard model, the model with an extra vector-like down quark (VLDQ) and the R-parity violating supersymmetric model (RPV) and show that the direct CP violating asymmetry in B+→ϕK+ could be as large as ~ 85% (70%) in VLDQ (RPV) model.

scholarly journals Constraints on the CKM angle α in the B → ρρ decays

2005 ◽  
Vol 20 (15) ◽  
pp. 3578-3580
Author(s):  
Haibo Li
Keyword(s):  
Decay Mode ◽  
Branching Fraction ◽  
Time Dependent ◽  
Penguin Contribution ◽  
Upper Limit ◽  
B Factory ◽  
Babar Detector ◽  
Asymmetry Parameters ◽  
Ckm Angle

Using a data sample of 122 million [Formula: see text] decays collected with BABAR detector at the PEP-II asymmetric B factory at SLAC, we measure the time-dependent-asymmetry parameters of the longitudinally polarized component in the B0 → ρ+ρ- decay as CL = -0.23 ± 0.24 ( stat ) ± 0.14 ( syst ) and SL = -0.19 ± 0.33 ( stat ) ± 0.11 ( syst ). The B0 → ρ0ρ0 decay mode is also searched for in a data sample of about 227 million [Formula: see text] pairs. No significant signal is observed, and an upper limit of 1.1 × 10-6 (90% C.L.) on the branching fraction is set. The penguin contribution to the CKM angle α uncertainty is measured to be 11°. All results are preliminary.

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