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CP violations in B meson decays at hadron colliders are reviewed. In particular I examine: $B^0-\bar{B^0}$ mixing and oscillations within Standard Model and the Cabibbo-Kobayashi-Maskawa picture for CP violations; $B^0$ decays into CP…

High Energy Physics - Phenomenology · Physics 2010-11-01 G. Nardulli

We propose a new mechanism which can introduce large $CP$ asymmetries in the phase spaces of three-body decays of heavy baryons. In this mechanism, a large $CP$ asymmetry is induced by the interference of two intermediate resonances, which…

High Energy Physics - Phenomenology · Physics 2015-11-13 Zhen-Hua Zhang , Chao Wang , Xin-Heng Guo

We report a study of $\Lambda_c^+\to\Lambda h^+$ and $\Lambda_c^+\to\Sigma^{0} h^+$ ($h\!=\!K,\,\pi$) decays based on a data sample of 980~${\rm fb}^{-1}$ collected with the Belle detector at the KEKB energy-asymmetric $e^+e^-$ collider.…

High Energy Physics - Experiment · Physics 2023-03-30 Belle Collaboration , L. K. Li , W. Shan , K. Kinoshita , I. Adachi , H. Aihara , D. M. Asner , H. Atmacan , T. Aushev , V. Babu , S. Bahinipati , Sw. Banerjee , P. Behera , J. Bennett , M. Bessner , V. Bhardwaj , B. Bhuyan , T. Bilka , A. Bobrov , D. Bodrov , J. Borah , M. Bračko , P. Branchini , A. Budano , M. Campajola , D. Červenkov , M. -C. Chang , P. Chang , V. Chekelian , A. Chen , B. G. Cheon , K. Chilikin , H. E. Cho , K. Cho , S. -J. Cho , S. -K. Choi , Y. Choi , S. Choudhury , D. Cinabro , N. Dash , G. De Nardo , G. De Pietro , R. Dhamija , F. Di Capua , Z. Doležal , T. V. Dong , D. Epifanov , T. Ferber , A. Frey , B. G. Fulsom , V. Gaur , A. Garmash , A. Giri , P. Goldenzweig , G. Gong , E. Graziani , T. Gu , Y. Guan , K. Gudkova , C. Hadjivasiliou , K. Hayasaka , H. Hayashii , M. T. Hedges , W. -S. Hou , C. -L. Hsu , K. Inami , A. Ishikawa , R. Itoh , W. W. Jacobs , E. -J. Jang , Q. P. Ji , S. Jia , Y. Jin , K. K. Joo , C. Kiesling , C. H. Kim , D. Y. Kim , K. -H. Kim , P. Kodyš , T. Konno , A. Korobov , S. Korpar , E. Kovalenko , P. Krokovny , T. Kuhr , R. Kumar , K. Kumara , A. Kuzmin , Y. -J. Kwon , Y. -T. Lai , T. Lam , J. S. Lange , S. C. Lee , J. Li , S. X. Li , Y. Li , Y. B. Li , L. Li Gioi , J. Libby , K. Lieret , M. Masuda , S. K. Maurya , M. Merola , F. Metzner , K. Miyabayashi , R. Mizuk , R. Mussa , M. Nakao , Z. Natkaniec , A. Natochii , L. Nayak , M. Nayak , M. Niiyama , N. K. Nisar , S. Nishida , S. Ogawa , H. Ono , P. Oskin , G. Pakhlova , S. Pardi , H. Park , S. -H. Park , A. Passeri , S. Patra , S. Paul , T. K. Pedlar , R. Pestotnik , L. E. Piilonen , T. Podobnik , E. Prencipe , M. T. Prim , A. Rostomyan , N. Rout , G. Russo , D. Sahoo , Y. Sakai , S. Sandilya , A. Sangal , V. Savinov , G. Schnell , J. Schueler , C. Schwanda , A. J. Schwartz , Y. Seino , K. Senyo , M. E. Sevior , M. Shapkin , C. Sharma , C. P. Shen , J. -G. Shiu , J. B. Singh , A. Sokolov , E. Solovieva , M. Starič , M. Sumihama , K. Sumisawa , T. Sumiyoshi , W. Sutcliffe , M. Takizawa , U. Tamponi , K. Tanida , F. Tenchini , M. Uchida , T. Uglov , Y. Unno , S. Uno , Y. Usov , S. E. Vahsen , R. van Tonder , G. Varner , A. Vinokurova , A. Vossen , E. Waheed , E. Wang , X. L. Wang , M. Watanabe , S. Watanuki , O. Werbycka , E. Won , X. Xu , B. D. Yabsley , W. Yan , S. B. Yang , J. Yelton , J. H. Yin , Y. Yook , C. Z. Yuan , Z. P. Zhang , V. Zhilich , V. Zhukova

CP violation (CPV) in the baryon sectors has not yet been established experimentally. In this work, we propose to search for the hyperon CPV through the Cabibbo-favored charm-baryon decaying processes involving a hyperon in the final…

High Energy Physics - Phenomenology · Physics 2022-08-22 Jian-Peng Wang , Fu-Sheng Yu

Measurements of CP asymmetries in hadron decays integrated over time provide access to direct CP violation, which arises from differences between the amplitudes of CP-conjugate decay processes. These proceedings present an overview of…

High Energy Physics - Experiment · Physics 2026-01-26 Alex Gilman

Using data collected with the CLEO II detector we have performed a search for direct CP violation in the $\Xi$ hyperon system. CP violation gives rise to an asymmetry, A, between the parity-violating angular distributions of the decay…

High Energy Physics - Experiment · Physics 2007-05-23 D. E. Jaffe , CLEO Collaboration

While indirect & direct CP violations (CPV) had been established in the decays of strange & beauty mesons, none have been done for baryons. There are different "roads" for finding CP asymmetries in the decays of strange baryons; they are…

High Energy Physics - Phenomenology · Physics 2017-11-23 I. I. Bigi , Xian-Wei Kang , Hai-Bo Li

The LHCb Collaboration has recently found a large CP-violating rate asymmetry in the $b$-baryon decay $\Lambda^0_b \to pK^-\pi^+\pi^-$. This is the first observation of CP violation in baryon processes, opening a new window to test its…

High Energy Physics - Phenomenology · Physics 2025-04-09 Xiao-Gang He , Chia-Wei Liu , Jusak Tandean

We review the status of the theory and phenomenology of heavy-quark symmetry, exclusive weak decays of $B$ mesons, inclusive decay rates and lifetimes of $b$ hadrons, and CP violation in $B$-meson decays.

High Energy Physics - Phenomenology · Physics 2014-11-17 Matthias Neubert

We study CP violation in b-baryon decays of $\Xi_b^- \to \Xi^- D$ with $D = D^0, \bar{D}^0$ and $D_i~(i=1,2)$. We find that these baryonic decay processes provide an ideal opportunity to measure the weak phase due to the absence of the…

High Energy Physics - Phenomenology · Physics 2022-09-07 Chao-Qiang Geng , Xiang-Nan Jin , Chia-Wei Liu , Zheng-Yi Wei , Jiabao Zhang

Angular distribution of the final particles in the decay $\Lambda_c^+\to K^- \, \Delta (1232)^{++} \to K^- \, p \, \pi^+$ of the polarized charmed baryon is discussed. Asymmetries are proposed which allow for determination of the components…

High Energy Physics - Phenomenology · Physics 2020-05-25 A. Yu. Korchin , V. A. Kovalchuk

After a brief look at CP violation in kaon decays, a short overview of CP violation in the $B$-meson system and of strategies to determine the angles of the unitarity triangles of the CKM matrix is given. Both general aspects and some…

High Energy Physics - Phenomenology · Physics 2011-03-23 Robert Fleischer

Motivated by recent LHCb measurements of CP violation in $\Lambda_b$ three-body decays, we conduct an analysis of CP asymmetry in three-body decays of bottom baryons utilizing U-spin symmetry. We first develop a convenient representation…

High Energy Physics - Phenomenology · Physics 2024-11-28 Wei Wang , Zhi-Peng Xing , Zhen-Xing Zhao

We study the angular distributions of the baryon-antibaryon low-mass enhancements in the three-body baryonic B decays of $B\to p\bar{p}M$ (M=K and $\pi$) in the framework of the perturbative QCD. By writing the most general forms for the…

High Energy Physics - Phenomenology · Physics 2008-11-26 C. Q. Geng , Y. K. Hsiao

CP violation in $B$ decays is reviewed in the Standard Model (SM) and beyond the SM. The present explanation of CP violation in terms of a phase in the Cabibbo-Kobayashi-Maskawa (CKM) matrix can be tested through a variety of CP asymmetries…

High Energy Physics - Phenomenology · Physics 2016-09-06 Michael Gronau

At present, the measurements of $R_{D^{(*)}}$ and $R_{J/\psi}$ hint at new physics (NP) in $b \to c \tau^- {\bar\nu}$ decays. The angular distribution of ${\bar B} \to D^* (\to D \pi) \, \tau^{-} {\bar\nu}_\tau$ would be useful for getting…

High Energy Physics - Phenomenology · Physics 2020-07-29 Bhubanjyoti Bhattacharya , Alakabha Datta , Saeed Kamali , David London

In radiative B decays to final states containing one spin zero meson, one spin one meson and a photon, the photon polarization can be measured from the angular distribution of the final state. The P-odd, C-even components of this…

High Energy Physics - Phenomenology · Physics 2007-05-23 David Atwood , Tim Gershon , Masashi Hazumi , Amarjit Soni

Evidence for CP violation in baryonic decays has not been seen in experiments. With large data events accumulated at $e^+e^-$ collider or Large Hadron Collider, the charmed baryon decays would provide a promising laboratory to test the CP…

High Energy Physics - Phenomenology · Physics 2022-11-30 PengCheng Hong , Fang Yan , RongGang Ping , Tao Luo

We discuss an improved theoretical description of the semi-inclusive B meson decays $B\to K(K^*)X$. The decay distributions are calculated. Their branching ratios are found to be appreciable. The CP asymmetries in the neutral B modes…

High Energy Physics - Phenomenology · Physics 2016-11-23 Changhao Jin

Non-conservation of CP symmetry can manisfest itself in non-leptonic hyperon decays as a difference in the decay parameter between the strange-baryon decay and its charge conjugate. By comparing the decay distribution in the $\Lambda$…

High Energy Physics - Experiment · Physics 2016-11-23 K. B. Luk