scholarly journals A U-spin prediction for the CP-forbidden transition e+e−→ D0D̄0 → (K+K−)D(π+π−)D

2019 ◽  
Vol 34 (29) ◽  
pp. 1950238 ◽  
Author(s):  
Zhi-Zhong Xing
Keyword(s):  
Cp Violation ◽  
Strong Interaction ◽  
Branching Fraction ◽  
Spin Symmetry ◽  
Lhcb Collaboration ◽  
High Luminosity ◽  
Decay Modes ◽  
Forbidden Transition ◽  
Transition Formula

The LHCb Collaboration has recently reported the discovery of direct CP violation in combined [Formula: see text] and [Formula: see text] decay modes at the [Formula: see text] level. Assuming U-spin symmetry (i.e. [Formula: see text] interchange symmetry) for the strong-interaction parts of these two channels, we find that their corresponding direct CP-violating asymmetries are [Formula: see text] and [Formula: see text]. The CP-forbidden transition [Formula: see text] on the [Formula: see text] resonance is therefore expected to have a branching fraction of [Formula: see text] or smaller under U-spin symmetry, and it can be observed at a high-luminosity super-[Formula: see text]-charm factory if at least [Formula: see text] pairs of coherent [Formula: see text] and [Formula: see text] events are accumulated.

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

PROSPECTS FOR RUN II BEAUTY PHYSICS AT DØ

2001 ◽  
Vol 16 (supp01a) ◽  
pp. 425-427
Author(s):  
◽  
WENDY TAYLOR
Keyword(s):  
Cp Violation ◽  
Full Advantage ◽  
B Physics ◽  
Collider Physics ◽  
High Luminosity ◽  
Vertex Detector ◽  
Physics Program ◽  
Integrated Luminosity

In the spring of 2001, the upgraded Fermilab Tevatron will begin its collider physics run with [Formula: see text] collisions at [Formula: see text], where it is expected to deliver an integrated luminosity of 2 fb -1 in the first two years. The DØ detector is undergoing an extensive upgrade in order to take full advantage of the high luminosity running conditions. The upgraded detector's new silicon vertex detector, fiber tracker, and lepton trigger capabilities make a rich B physics program possible at DØ. This paper describes the prospects for several DØ B physics measurements, including CP violation in [Formula: see text] decays, Bs mixing and [Formula: see text] lifetime.

scholarly journals CP Violation in b Hadrons at LHCb

2018 ◽  
Vol 46 ◽  
pp. 1860066
Author(s):  
A. Hicheur
Keyword(s):  
Cp Violation ◽  
Lhcb Collaboration ◽  
B Hadrons ◽  
Different Types

The most recent results on CP violation in [Formula: see text] hadrons obtained by the LHCb Collaboration with Run I and years 2015-2016 of Run II are reviewed. The different types of violation are covered by the studies presented in this paper.

CHARM MIXING AND CP VIOLATION AT B-FACTORIES

2014 ◽  
Vol 35 ◽  
pp. 1460413
Author(s):  
GIANLUIGI CIBINETTO ◽  
Keyword(s):  
Cp Violation ◽  
Standard Model ◽  
New Physics ◽  
Ratio Analysis ◽  
Charm Meson ◽  
Final State ◽  
Charm Decays ◽  
Decay Modes ◽  
The Standard Model ◽  
Model Predictions

CP violation in charm decays is expected to be very small in the Standard Model, at the level of 0.1% or less. A sizable excess of CP violation with respect to the Standard Model predictions could be a signature of new physics. We report on recent searches for CP violation in charm meson decays at BABAR and Belle experiments. In particular we report a lifetime ratio analysis of D0 → K+K−, π+π− with respect to D0 → K−π+ decays, which is sensitive to [Formula: see text] mixing and CP violation. We report also on searches for CPV in the 3-body D+ → K+K−π+ decay and for decay modes with a [Formula: see text] in the final state, such as [Formula: see text].

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.

scholarly journals Determination of the phase ϕs at LHCb

2018 ◽  
Vol 177 ◽  
pp. 04003
Author(s):  
Varvara Batozskaya
Keyword(s):  
Lhcb Collaboration ◽  
Data Set ◽  
Lhcb Experiment ◽  
Decay Modes

The determination of the mixing-induced CP-violating phase ϕs in the B0s - B0s system is one of the key goals of the LHCb experiment. Using several B0s decay modes it has been measured by the LHCb collaboration exploiting the Run I data set. The first observation of the B0s → ηcϕ and B0s → ηcπ+π- decay modes which can be used to measure ϕs with Run II data is presented.

CP ASYMMETRIES IN NONLEPTONIC DECAY OF NEUTRAL B MESONS FOR THREE AND FOUR GENERATIONS

1989 ◽  
Vol 04 (25) ◽  
pp. 2465-2471 ◽  
Author(s):  
TSUTOM HASUIKE ◽  
TOSHIHIKO HATTORI ◽  
TOSHIO HAYASHI ◽  
SEIICHI WAKAIZUMI
Keyword(s):  
Cp Violation ◽  
B Mesons ◽  
Branching Ratio ◽  
Fourth Generation ◽  
Nonleptonic Decay ◽  
Present Stage ◽  
Decay Modes ◽  
Quark Pairs ◽  
Mixing Parameter ◽  
O 10

We investigate the effects of CP violation in nonleptonic decays of neutral B mesons (Bd, Bs) in the Kobayashi-Maskawa model through the quark exchange diagram in terms of the Wolfenstein matrix. In our calculation, we use the new data of mixing parameter xd= 0.70±0.13 which is derived from ARGUS and CLEO measurements and the new data on the branching ratio for Bd meson. We obtain the results that CP violating asymmetries for Bd→D+D−, π+π− and K+K− reach about 50% and the number of [Formula: see text] quark pairs needed to detect the asymmetry is O(106~107) at 3σ level, and the asymmetries for [Formula: see text], D−π+, D0π0 and D+π− reach the order of 20% and the number of [Formula: see text] pairs is O(108). Therefore, we may conclude that the CP violation for these decay modes is possibly observable at the present stage. The effects of fourth generation quarks on CP violation are also studied.

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