scholarly journals Isolating the penguin-diagram contribution toCP violation in B d 0 vs. $$B_d^0 {\mathbf{ }}vs.{\mathbf{ }}\bar B_d^0 \to \pi ^ + \pi ^ - $$

1995 ◽  
Vol 108 (9) ◽  
pp. 1069-1077 ◽  
Author(s):  
Zhi-Zhong Xing
Keyword(s):  
Penguin Diagram

scholarly journals Lattice calculation of the penguin diagram decayB→K*γ

1994 ◽  
Vol 72 (10) ◽  
pp. 1398-1401 ◽  
Author(s):  
K. C. Bowler ◽  
N. M. Hazel ◽  
D. S. Henty ◽  
H. Hoeber ◽  
R. D. Kenway ◽  
...  
Keyword(s):  
Lattice Calculation ◽  
Penguin Diagram

The process Ω→γΞ as a possible test of the penguin diagram

1984 ◽  
Vol 21 (3) ◽  
pp. 253-263 ◽  
Author(s):  
J. O. Eeg
Keyword(s):  
Penguin Diagram

scholarly journals Evidence for penguin-diagram decays: First observation ofB→K*(892)γ

1993 ◽  
Vol 71 (5) ◽  
pp. 674-678 ◽  
Author(s):  
R. Ammar ◽  
S. Ball ◽  
P. Baringer ◽  
D. Coppage ◽  
N. Copty ◽  
...  
Keyword(s):  
Penguin Diagram

scholarly journals Study of electroweak penguin B decays at Belle II experiment

2021 ◽  
Vol 2145 (1) ◽  
pp. 012018
Author(s):  
J Ineead ◽  
S Nishida ◽  
B Asavapibhop ◽  
N Suwonjandee
Keyword(s):  
Branching Fraction ◽  
Neutral Current ◽  
New Physics ◽  
Lepton Flavor ◽  
Flavor Changing ◽  
Penguin Diagram ◽  
The Status ◽  
Flavor Changing Neutral Current ◽  
Belle Ii ◽  
Exclusive Decay

Abstract The electroweak b → sll (l = e, µ) transition is a flavor-changing neutral current process that mediates through a one-loop penguin diagram. The decay is considered to be a good probe for the New Physics as particles predicted in the beyond Standard Model theories can enter into the loop. The exclusive decay B → K (*) l + l − was first observed by the Belle experiment and it provides many observables such as the branching fraction, CP asymmetry, forward-backward asymmetry, and other angular observables. Recently, the LHCb experiment has reported some clue of a lepton flavor universality violation from the branching fraction ratio of the B → Kµ + µ − and B → Ke + e − decays. In this presentation, we report the status of the B → Kl + l − decay analysis at the Belle II experiment which started the data taking in 2019. We also, present an activity at the Belle II Chulalongkorn University group where we study the B → KJ/ψ decay which has the same topology as the B → Kl + l − .

scholarly journals Spacelike penguin diagram effects inB→PPdecays

1996 ◽  
Vol 53 (1) ◽  
pp. 249-254 ◽  
Author(s):  
Dong-Sheng Du ◽  
Mao-Zhi Yang ◽  
Deng-Zhi Zhang
Keyword(s):  
Penguin Diagram

Penguin-diagram-inducedCPviolation in charmless exclusive hadronicBdecays

1993 ◽  
Vol 48 (9) ◽  
pp. 4155-4162 ◽  
Author(s):  
Dongsheng Du ◽  
Zhi-zhong Xing
Keyword(s):  
Penguin Diagram

Interplay of the Cabibbo-Kobayashi-MaskawaCP-violating phase and penguin diagram effects inB¯→ππ

1995 ◽  
Vol 51 (11) ◽  
pp. 6253-6258 ◽  
Author(s):  
B. F. L. Ward
Keyword(s):  
Penguin Diagram

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.

STATUS OF THE $\Delta I =\frac{1}{2}$ RULE IN KAON DECAY

1989 ◽  
Vol 04 (03) ◽  
pp. 495-582 ◽  
Author(s):  
HAI-YANG CHENG
Keyword(s):  
Perturbation Theory ◽  
Current Algebra ◽  
Chiral Perturbation Theory ◽  
Low Energy ◽  
Kaon Decay ◽  
Chiral Perturbation ◽  
Self Energy ◽  
Penguin Diagram ◽  
Firm Basis

The [Formula: see text] rule in K → ππ decays and its status are discussed and reviewed. First, we present the phenomenological deductions which have a firm basis, including the penguin diagram, vacuum insertion, current algebra and chiral perturbation theory. Then we proceed to discuss new conjectures and speculations e.g. 1/N expansion, W-exchange, low-energy penguin diagrams, the s - d self-energy tadpole, QCD-duality, instanton effects, etc. and to assess their roles in understanding the [Formula: see text] enigma.

RECENT RESULTS ON B DECAYS: Rare B Decay Highlights + Belle $b \to s\bar{q}q$ Time-dependent CPV

2005 ◽  
Vol 20 (22) ◽  
pp. 5059-5068 ◽  
Author(s):  
Y. SAKAI
Keyword(s):  
Cp Violation ◽  
Rare Decays ◽  
Experimental Results ◽  
Time Dependent ◽  
B Decays ◽  
Decay Modes ◽  
Penguin Diagram

Highlights on recent experimental results on rare decays from asymmetric B-factories are reported. Also, the results on time-dependent CP violation measurements for decay modes where [Formula: see text] penguin diagram dominate from Belle are reported.

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