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We present measurements of CP-violation parameters in b -> s gamma transitions based on a sample of 386x10^6 BB pairs collected at the Y(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. One neutral B meson…

High Energy Physics - Experiment · Physics 2019-08-14 K. Abe

We present updated measurements of \CP-violating asymmetries in the decays $\Bz\to\Dstarpm\Dmp$ and $\Bz\to\Dp\Dm$ using $(383\pm 4) \times 10^{6} \BB$ pairs collected by the \babar detector at the PEP-II $B$ factory. We determine the…

High Energy Physics - Experiment · Physics 2010-04-12 BaBar Collaboration , B. Aubert

We present a preliminary measurement of the time-dependent CP-violating asymmetry in decays of neutral B mesons to the final states D*-+ pi+- using approximately 178 million BB events recorded by the BaBar experiment at the PEP-II e+e-…

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

We present measurements of time-dependent CP-violating asymmetries in neutral B decays to several CP eigenstates. The measurement uses a data sample of 23 million Upsilon(4S)-->B-anti-B decays collected by the BABAR detector at the PEP-II…

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

We report results on studies of CP violation in the three-body charmless decay B+- => K+-pi+-pi-+. Evidence at the 3.9sigma level for large direct CP violation in B+- => rho(770)0K+-$ is found. This is the first evidence for CP violation in…

High Energy Physics - Experiment · Physics 2007-05-23 The Belle Collaboration , K. Abe

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 updated measurements of time-dependent CP asymmetries in fully reconstructed neutral B decays containing a charmonium meson. The measurements reported here use a data sample of $(465\pm 5)\times 10^6$ $\Upsilon(4S) \to B \bar{B}$…

High Energy Physics - Experiment · Physics 2008-08-15 The BABAR Collaboration , B. Aubert

We report the results on $D^0$-$\bar{D}^0$ mixing in the decays of $D^0\to K^+\pi^-$ and $D^0\to K_S^0\pi^+\pi^-$, and CP violation in $D^0\to\pi^0\pi^0$ using a data sample with an integrated luminosity of about 1~ab$^{-1}$ recorded with…

High Energy Physics - Experiment · Physics 2014-11-11 N. K. Nisar

Using the full data sample collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider, we present CP violation in charm decays. The $D^0-\bar{D}^0$ mixing parameter $y_{CP}$ and indirect CP violation parameter…

High Energy Physics - Experiment · Physics 2019-08-13 B. R. Ko

We present a measurement of the time-dependent CP-violating asymmetries in $B^0 \to K^{*0}\gamma (K^{*0}\to K_S^0 \pi^0)$ decays based on 124 million $\Upsilon(4S)\to B^0\bar{B}^0$ decays collected with the BaBar detector at the PEP-II…

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

We report an improved measurement of the partial-rate CP asymmetry in B+ => K0pi+ and B- => K0bar pi- decays. The analysis is based on a data sample of 85 million BBbar pairs collected at the Upsilon(4S) resonance with the Belle detector at…

High Energy Physics - Experiment · Physics 2008-11-26 Y. Unno , K. Suzuki

We present updated measurements of time-dependent CP asymmetries in fully reconstructed neutral B decays containing a charmonium meson. The measurements reported here use a data sample of (465+/-5) million Upsilon(4S)->BBbar decays…

High Energy Physics - Experiment · Physics 2010-04-12 The BABAR Collaboration , B. Aubert

The LHCb Collaboration has recently observed evidence of CP violation in neutral D meson decays. CP violation in the charm sector is generically expected to be very small in the Standard Model, but can be enhanced in many models of new…

High Energy Physics - Experiment · Physics 2012-11-06 Angelo Carbone

We present a measurement of the Standard Model CP violation parameter sin(2phi_1) based on a 10.5 fb^{-1} data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e+e- collider. One neutral B meson…

High Energy Physics - Experiment · Physics 2008-11-26 A. Abashian

We report the first observation of the radiative decay B^0->\phi K^0\gamma using a data sample of 772x10^6 BBar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We observe a signal…

High Energy Physics - Experiment · Physics 2019-08-13 H. Sahoo

Using a sample of 227 million $\Upsilon(4S) \to B \bar{B}$ events collected with the $BABAR$ detector at the PEP-II $B$ Factory in 1999--2004, we study $B^- \to D^0 K^*(892)^-$ decays where $K^{*-} \to K^0_S \pi^-$ and $D^0 \to K^-\pi^+,…

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

We report a measurement of the decay B0 --> rho0 pi0, using 386 x 10^6 BB-bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We detect 51^{+14}_{-13} signal events with a…

High Energy Physics - Experiment · Physics 2012-08-27 The Belle Collaboration

We report observations of CP violation in the decays B0 -> K+pi- and B0 -> pi+pi- in a sample of 383 million Y(4S) -> BBbar events. We find 4372 +/- 82 B0 -> K+pi- decays and measure the direct CP-violating charge asymmetry Akpi = -0.107…

High Energy Physics - Experiment · Physics 2019-08-14 B. Aubert

We present a preliminary measurement of the time-dependent CP asymmetry for the neutral $B$-meson decay $B^0\to\phi K^0$. We use a sample of approximately 227 million $B$-meson pairs recorded at the $\Upsilon(4S)$ resonance with the BaBar…

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

We present the first study of the time-dependent CP-violating asymmetry in B0 -> J/psi pi0 decays using e+e- annihilation data collected with the BaBar detector at the Upsilon(4S) resonance during the years 1999-2002 at the PEP-II…

High Energy Physics - Experiment · Physics 2008-11-26 B. Aubert