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Related papers: Combining CP Asymmetries in $B \to K \pi$ Decays

200 papers

We present measurements of the branching fraction and time-dependent CP-violating (CPV) asymmetries in B0 --> K0S Pi0 decays based on 227 million Y(4S) --> BBbar decays collected with the BaBar detector at the PEP-II asymmetric-energy B…

High Energy Physics - Experiment · Physics 2007-05-23 The BABAR Collaboration , B. Aubert

We study the CP-odd and CP-even observables of the $B$ mesons decaying into a baryon and antibaryon. We estimate these observables through the $^3P_0$ model and chiral selection rule. The decay branching ratios of $ B^+ \to p…

High Energy Physics - Phenomenology · Physics 2023-06-27 Chao-Qiang Geng , Xiang-Nan Jin , Chia-Wei Liu

We study the decays B- --> D*0 pi- and B- --> D*0 K-, where the D*0 decays into D0 pi0, with the D0 reconstructed in the CP-even (CP+) eigenstates K- K+ and pi- pi+ and in the (non-CP) channels K- pi+, K- pi+ pi+ pi-, and K- pi+ pi0. Using…

High Energy Physics - Experiment · Physics 2008-11-26 The BABAR Collaboration , B. Aubert

We present measurements of the branching fraction and time-dependent CP-violating asymmetries in $B^0 \to K^0_s K^0_s K^0_s$ decays based on 227 million $\Upsilon(4S) \to B \bar{B}$ decays collected with the BaBar detector at the PEP-II…

High Energy Physics - Experiment · Physics 2008-11-26 The BABAR Collaboration , B. Aubert

We review the present status of CP violation in the standard model. Subsequently we make an excursion in the future in order to see what we could expect in this field in this and the next decade. We present various strategies for the…

High Energy Physics - Phenomenology · Physics 2009-09-25 A. J. Buras

The two kinds of indirect CP violation in neutral meson systems are related, in the absence of new weak phases in decay. The result is a model-independent expression relating CP violation in mixing, CP violation in the interference of…

High Energy Physics - Phenomenology · Physics 2009-11-05 Alexander L. Kagan , Michael D. Sokoloff

The CP asymmetries of the decay B_d^0 -> K^0 \bar K^0, which originates from \bar b -> \bar d s \bar s flavour-changing neutral-current processes, and its CP-averaged branching ratio BR(B_d -> K^0 \bar K^0) offer interesting avenues to…

High Energy Physics - Phenomenology · Physics 2009-11-10 Robert Fleischer , Stefan Recksiegel

We search for CP violation in a sample of 20000 Cabibbo-suppressed decays, $D^+\rightarrow K^+K^0_S\pi^+\pi^-$, and 30000 Cabibbo-favored decays, $D_s^+\rightarrow K^+K^0_S\pi^+\pi^-$. We use 520 $fb^{-1}$ of data recorded by the BaBar…

High Energy Physics - Experiment · Physics 2015-03-19 The BABAR Collaboration , J. P. Lees

We summarize the results of two papers in which we have studied CP violation in inclusive and exclusive decays b -> d e^+e^-. Two CP-violating effects are calculated: the partial rate asymmetry between b and \bar{b} decay, and the asymmetry…

High Energy Physics - Phenomenology · Physics 2007-05-23 F. Krüger , L. M. Sehgal

We investigate in a phenomenological way, direct CP violation in the hadronic decays $B^{\pm,0} \to \pi^{+} \pi^{-} K^{\pm,0}$ where the effect of $\rho - \omega$ mixing is included. If $N_{c}^{eff}$ (the effective parameter associated with…

High Energy Physics - Phenomenology · Physics 2010-02-17 O. Leitner , X. -H. Guo , A. W. Thomas

We present preliminary measurements of direct and indirect CP-violating asymmetries in the decays of neutral B mesons to pi+pi-pi0 and K+-pi-+pi0 final states dominated by the rho+- resonance, using a time-dependent maximum likelihood…

High Energy Physics - Experiment · Physics 2007-05-23 B. Aubert

The decay amplitude of $B^+\to \pi^+\pi^-\pi^+$ in the Dalitz plot has been analyzed by the LHCb using three different approaches for the $S$-wave component. It was found that the mode with $\sigma$ (or $f_0(500)$) exhibited a CP asymmetry…

High Energy Physics - Phenomenology · Physics 2020-05-14 Hai-Yang Cheng

We report a measurement of $CP$ violating asymmetries in $B^0(\overline{B}^0) \to K^+ K^- K^0_S$ decays with a time-dependent Dalitz approach. This analysis is based on a data sample of $657\times 10^6$ $B\overline{B}$ pairs accumulated at…

High Energy Physics - Experiment · Physics 2010-11-11 Belle Collaboration , Y. Nakahama , K. Sumisawa , H. Aihara , K. Arinstein , T. Aushev , T. Aziz , A. M. Bakich , V. Balagura , K. Belous , V. Bhardwaj , M. Bischofberger , A. Bondar , G. Bonvicini , A. Bozek , M. Bracko , T. E. Browder , P. Chang , Y. Chao , A. Chen , P. Chen , B. G. Cheon , C. -C. Chiang , I. -S. Cho , Y. Choi , J. Dalseno , A. Das , Z. Dolezal , Z. Drasal , A. Drutskoy , S. Eidelman , P. Goldenzweig , B. Golob , J. Haba , K. Hara , K. Hayasaka , M. Hazumi , T. Higuchi , Y. Horii , Y. Hoshi , W. -S. Hou , Y. B. Hsiung , H. J. Hyun , K. Inami , R. Itoh , M. Iwabuchi , M. Iwasaki , Y. Iwasaki , T. Julius , J. H. Kang , P. Kapusta , N. Katayama , H. Kawai , T. Kawasaki , H. Kichimi , H. J. Kim , J. H. Kim , M. J. Kim , B. R. Ko , P. Kodys , S. Korpar , P. Krizan , P. Krokovny , T. Kuhr , T. Kumita , S. -H. Kyeong , M. J. Lee , S. -H. Lee , Y. Liu , R. Louvot , A. Matyja , S. McOnie , K. Miyabayashi , H. Miyata , Y. Miyazaki , G. B. Mohanty , E. Nakano , M. Nakao , H. Nakazawa , S. Neubauer , S. Nishida , K. Nishimura , O. Nitoh , T. Nozaki , S. Ogawa , T. Ohshima , S. L. Olsen , W. Ostrowicz , H. Ozaki , C. W. Park , H. Park , H. K. Park , R. Pestotnik , M. Petric , L. E. Piilonen , M. Prim , H. Sahoo , Y. Sakai , O. Schneider , C. Schwanda , A. J. Schwartz , K. Senyo , M. E. Sevior , M. Shapkin , C. P. Shen , J. -G. Shiu , B. Shwartz , P. Smerkol , E. Solovieva , S. Stanic , M. Staric , T. Sumiyoshi , Y. Teramoto , K. Trabelsi , S. Uehara , T. Uglov , Y. Unno , S. Uno , Y. Ushiroda , G. Varner , K. E. Varvell , K. Vervink , C. H. Wang , P. Wang , X. L. Wang , Y. Watanabe , R. Wedd , E. Won , Y. Yamashita , Y. Yusa , D. Zander , Z. P. Zhang , V. Zhilich , P. Zhou , T. Zivko , A. Zupanc

We present an improved measurement of CP-violating asymmetries in B0 -> pi+ pi- decays based on a 78 fb^-1 data sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We reconstruct one…

High Energy Physics - Experiment · Physics 2008-11-26 Belle Collaboration , K. Abe

We measure the branching fraction and the CP-violating asymmetry of $B^{0}\to K_{s}^{0}\pi^{0}$ decays with 227 million $\Upsilon(4S)\to B\bar{B}$ events collected with the BaBar detector at the PEP-II asymmetric-energy $e^+e^-$ collider at…

High Energy Physics - Experiment · Physics 2009-09-29 The BABAR Collaboration , B. Aubert

We study the direct CP violation in $B^\pm\to p\bar p K^{(*)\pm}$ decays in the standard model. We point out that these three-body baryonic B decays can be important tools for detecting the direct CP violation in the charged $B$ system, in…

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

Recently, the large CP asymmetries in $B^\pm\to\pi^\pm\pi^+\pi^-$ decays were found by the LHCb Collaboration to localize in the region $m_{\pi^+\pi^-}^2<0.4 \text{GeV}^2$. We find such large localized CP asymmetries may be due to the…

High Energy Physics - Phenomenology · Physics 2013-04-10 Zhen-Hua Zhang , Xin-Heng Guo , Ya-Dong Yang

CP violation is observed to date only in K^0 decays and is parameterizable by a single quantity epsilon. Because it is one of the least understood phenomena in the Standard Model and holds a clue to baryogenesis, it must be investigated…

High Energy Physics - Phenomenology · Physics 2008-11-26 Isard Dunietz

We present the new and updated $BABAR$ measurements of CP-violation studies for many $b\to s $ penguin decay modes. We report the first observation of mixing-induced CP-violation in $B^0 \to \eta ^{'} K^0$ with a significance (including…

High Energy Physics - Experiment · Physics 2007-10-17 BaBar Collaboration , Nitesh Soni

A recent analysis of $B \to \pi K$ decays concludes that present data do not clearly indicate whether (i) the standard model (or $\Delta I=0$ new physics) is sufficient, or (ii) $\Delta I=1$ new physics is needed. We show that these two…

High Energy Physics - Phenomenology · Physics 2009-07-29 Seungwon Baek , Cheng-Wei Chiang , Michael Gronau , David London , Jonathan L. Rosner