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We present the result of a search for charge asymmetry in B^+ -> J/psi K^+ decays. The CP-violating charge asymmetry is measured to be A_CP(B^+ -> J/psi K^+) = [-0.76 +/- 0.50 (stat) +/- 0.22 (syst)]%.

High Energy Physics - Experiment · Physics 2010-09-14 K. Sakai , T. Kawasaki , H. Aihara , K. Arinstein , T. Aushev , A. M. Bakich , V. Balagura , E. Barberio , K. Belous , V. Bhardwaj , B. Bhuyan , M. Bischofberger , A. Bondar , A. Bozek , M. Bračko , T. E. Browder , M. -C. Chang , Y. Chao , A. Chen , K. -F. Chen , P. Chen , B. G. Cheon , C. -C. Chiang , K. Cho , Y. Choi , J. Dalseno , Z. Doležal , Z. Drásal , W. Dungel , S. Eidelman , M. Feindt , B. Golob , H. Ha , J. Haba , K. Hayasaka , H. Hayashii , Y. Horii , Y. Hoshi , W. -S. Hou , H. J. Hyun , K. Inami , R. Itoh , M. Iwabuchi , Y. Iwasaki , J. H. Kang , H. Kawai , H. Kichimi , C. Kiesling , H. J. Kim , J. H. Kim , Y. J. Kim , B. R. Ko , S. Korpar , P. Križan , P. Krokovny , T. Kuhr , T. Kumita , A. Kuzmin , Y. -J. Kwon , S. -H. Kyeong , J. S. Lange , M. J. Lee , J. Li , A. Limosani , C. Liu , D. Liventsev , R. Louvot , A. Matyja , S. McOnie , K. Miyabayashi , H. Miyata , Y. Miyazaki , G. B. Mohanty , D. Mohapatra , E. Nakano , M. Nakao , Z. Natkaniec , S. Neubauer , S. Nishida , O. Nitoh , S. Ogawa , T. Ohshima , S. Okuno , S. L. Olsen , G. Pakhlova , H. Palka , C. W. Park , H. Park , H. K. Park , R. Pestotnik , M. Petrič , L. E. Piilonen , M. Prim , M. Röhrken , S. Ryu , H. Sahoo , Y. Sakai , Schneider , A. J. Schwartz , K. Senyo , Seon , M. E. Sevior , M. Shapkin , C. P. Shen , J. -G. Shiu , B. Shwartz , F. Simon , P. Smerkol , A. Sokolov , E. Solovieva , S. Stanič , M. Starič , K. Sumisawa , T. Sumiyoshi , G. N. Taylor , Y. Teramoto , K. Trabelsi , T. Tsuboyama , S. Uehara , T. Uglov , Y. Unno , S. Uno , G. Varner , K. E. Varvell , K. Vervink , C. H. Wang , M. -Z. Wang , P. Wang , M. Watanabe , Y. Watanabe , R. Wedd , E. Won , Y. Yamashita , C. C. Zhang , Z. P. Zhang , P. Zhou , T. Zivko , A. Zupanc , O. Zyukova1

We present the result of a search for charge asymmetry in B^+ -> J/psi K^+ decays. The CP-violating charge asymmetry is measured to be A_CP(B^+ -> J/psi K^+) = [-0.76 +/- 0.50 (stat) +/- 0.22 (syst)]%.

High Energy Physics - Experiment · Physics 2010-11-19 K. Sakai , T. Kawasaki , H. Aihara , K. Arinstein , T. Aushev , A. M. Bakich , V. Balagura , E. Barberio , K. Belous , V. Bhardwaj , B. Bhuyan , M. Bischofberger , A. Bondar , A. Bozek , M. Bračko , T. E. Browder , M. -C. Chang , Y. Chao , A. Chen , K. -F. Chen , P. Chen , B. G. Cheon , C. -C. Chiang , K. Cho , Y. Choi , J. Dalseno , Z. Doležal , Z. Drásal , W. Dungel , S. Eidelman , M. Feindt , B. Golob , H. Ha , J. Haba , K. Hayasaka , H. Hayashii , Y. Horii , Y. Hoshi , W. -S. Hou , H. J. Hyun , K. Inami , R. Itoh , M. Iwabuchi , Y. Iwasaki , J. H. Kang , H. Kawai , H. Kichimi , C. Kiesling , H. J. Kim , J. H. Kim , Y. J. Kim , B. R. Ko , S. Korpar , P. Križan , P. Krokovny , T. Kuhr , T. Kumita , A. Kuzmin , Y. -J. Kwon , S. -H. Kyeong , J. S. Lange , M. J. Lee , J. Li , A. Limosani , C. Liu , D. Liventsev , R. Louvot , A. Matyja , S. McOnie , K. Miyabayashi , H. Miyata , Y. Miyazaki , G. B. Mohanty , D. Mohapatra , E. Nakano , M. Nakao , Z. Natkaniec , S. Neubauer , S. Nishida , O. Nitoh , S. Ogawa , T. Ohshima , S. Okuno , S. L. Olsen , G. Pakhlova , H. Palka , C. W. Park , H. Park , H. K. Park , R. Pestotnik , M. Petri. c , L. E. Piilonen , M. Prim , M. Rohrken , S. Ryu , H. Sahoo , Y. Sakai , O. Schneider , A. J. Schwartz , K. Senyo , O. Seon , M. E. Sevior , M. Shapkin , C. P. Shen , J. -G. Shiu , B. Shwartz , F. Simon , P. Smerkol , A. Sokolov , E. Solovieva , S. Stani. c , M. Stari. c , K. Sumisawa , T. Sumiyoshi , G. N. Taylor , Y. Teramoto , K. Trabelsi , T. Tsuboyama , S. Uehara , T. Uglov , Y. Unno , S. Uno , G. Varner , K. E. Varvell , K. Vervink , C. H. Wang , M. -Z. Wang , P. Wang , M. Watanabe , Y. Watanabe , R. Wedd , E. Won , Y. Yamashita , C. C. Zhang , Z. P. Zhang , P. Zhou , T. Zivko , A. Zupanc , O. Zyukova

We present new measurements of CP-violation parameters in B0 --> phi K0, K+ K- Ks, f0(980) Ks, eta' Ks, omega Ks, Ks pi0, and K*0 gamma (K*0 --> Ks pi0) decays based on a sample of 275 x 10^6 BBbar pairs collected at the Upsilon(4S)…

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

Recent measurements of CP asymmetry in B --> phi K_S appear to be inconsistent with Standard Model expectations. We explore the effect of R-parity-violating SUSY to understand the data.

High Energy Physics - Phenomenology · Physics 2014-11-17 Alakabha Datta

We present an updated measurement of the time-dependent CP-violating asymmetry in B0->K0S K0S K0S decays based on 347 million Upsilon(4S)->B Bbar decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. We…

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

We present measurements of the branching fractions and charge asymmetries of B decays to all D(*)D(*) modes. Using 232 million BBbar pairs recorded on the Upsilon(4S) resonance by the BaBar detector at the e+e- asymmetric B factory PEP-II…

High Energy Physics - Experiment · Physics 2010-03-19 The BABAR Collaboration , B. Aubert

We present the latest B physics results from the CDF experiment at the Fermilab Tevatron collider. We focus on a number of analyses, including a measurement of the forward-backward asymmetry of B -> K^(*) mu mu decays, determination of the…

High Energy Physics - Experiment · Physics 2010-06-01 Elisa Pueschel

The study of CP violation in $B$-meson decays has already reached a high level of precision, which will be pushed even higher in the future era of Belle-II and the LHCb upgrade. %Important probes of CP violation are the $B_d^0$ and $B_s^0$…

High Energy Physics - Phenomenology · Physics 2018-07-24 K. Keri Vos

The status of CP violation and the CKM matrix is reviewed. Direct CP violation in B decay has been established and the measurement of sin(2beta) in \psi K modes reached 5% accuracy. I discuss the implications of these, and of the possible…

High Energy Physics - Phenomenology · Physics 2014-11-17 Zoltan Ligeti

We present a measurement of the branching fractions and charge-parity-(CP-) violating parameters in B -> omega K decays. The results are obtained from the final data sample containing 772 x 10^(6) BBbar pairs collected at the Y(4S)…

High Energy Physics - Experiment · Physics 2014-07-11 V. Chobanova , J. Dalseno , C. Kiesling , I. Adachi , H. Aihara , D. M. Asner , V. Aulchenko , T. Aushev , T. Aziz , A. M. Bakich , A. Bala , Y. Ban , K. Belous , B. Bhuyan , A. Bobrov , G. Bonvicini , A. Bozek , M. Bračko , T. E. Browder , D. Červenkov , V. Chekelian , A. Chen , B. G. Cheon , K. Chilikin , R. Chistov , K. Cho , Y. Choi , D. Cinabro , M. Danilov , Z. Doležal , Z. Drásal , D. Dutta , K. Dutta , S. Eidelman , S. Esen , H. Farhat , J. E. Fast , T. Ferber , V. Gaur , N. Gabyshev , S. Ganguly , A. Garmash , R. Gillard , Y. M. Goh , B. Golob , J. Haba , K. Hayasaka , X. H. He , Y. Horii , Y. Hoshi , W. -S. Hou , Y. B. Hsiung , H. J. Hyun , T. Iijima , K. Inami , A. Ishikawa , Y. Iwasaki , T. Iwashita , I. Jaegle , T. Julius , J. H. Kang , E. Kato , H. Kawai , T. Kawasaki , D. Y. Kim , H. J. Kim , J. B. Kim , J. H. Kim , M. J. Kim , Y. J. Kim , K. Kinoshita , J. Klucar , B. R. Ko , P. Kodyš , S. Korpar , P. Krokovny , B. Kronenbitter , T. Kuhr , T. Kumita , A. Kuzmin , J. S. Lange , S. -H. Lee , J. Li , Y. Li , L. Li Gioi , J. Libby , D. Liventsev , P. Lukin , D. Matvienko , K. Miyabayashi , H. Miyake , H. Miyata , R. Mizuk , G. B. Mohanty , A. Moll , N. Muramatsu , R. Mussa , E. Nakano , M. Nakao , Z. Natkaniec , M. Nayak , E. Nedelkovska , C. Ng , N. K. Nisar , S. Nishida , O. Nitoh , S. Ogawa , S. Okuno , P. Pakhlov , G. Pakhlova , C. W. Park , H. Park , H. K. Park , T. K. Pedlar , T. Peng , R. Pestotnik , M. Petrič , L. E. Piilonen , M. Ritter , M. Röhrken , A. Rostomyan , H. Sahoo , T. Saito , Y. Sakai , L. Santelj , T. Sanuki , V. Savinov , O. Schneider , A. J. Schwartz , D. Semmler , K. Senyo , O. Seon , M. E. Sevior , M. Shapkin , T. -A. Shibata , J. -G. Shiu , B. Shwartz , A. Sibidanov , F. Simon , Y. -S. Sohn , S. Stanič , M. Starič , M. Steder , K. Sumisawa , T. Sumiyoshi , U. Tamponi , G. Tatishvili , Y. Teramoto , K. Trabelsi , M. Uchida , T. Uglov , Y. Unno , S. Uno , C. Van Hulse , P. Vanhoefer , G. Varner , K. E. Varvell , A. Vinokurova , V. Vorobyev , M. N. Wagner , C. H. Wang , M. -Z. Wang , P. Wang , M. Watanabe , Y. Watanabe , K. M. Williams , E. Won , H. Yamamoto , Y. Yamashita , S. Yashchenko , Z. P. Zhang , V. Zhilich , V. Zhulanov , A. Zupanc

We present measurements of branching fractions and \CP-violating asymmetries in decays of $B$ mesons to two-body final states containing a \Kz. The results are based on a data sample of approximately 88 million \upsbb decays collected with…

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

A sample of 400 $B^0_d/\bar{B}{^0_d} \to J/\psi K^0_s$ decays collected in $\bar{p}p$ collisions by the CDF detector is used to directly measure the CP-violation parameter $\sin(2\beta)$. We find $\sin(2\beta) = 0.79…

High Energy Physics - Experiment · Physics 2007-05-23 G. Bauer

Measurements of mixing and $CP$ violation in $b$-hadron decays are great probes to search for physics beyond the Standard Model. A selection of recent results based upon $3.0\ \mathrm{fb}^{-1}$ of LHCb data are presented. These are the…

High Energy Physics - Experiment · Physics 2017-09-05 Xuesong Liu

The Collider Detector at Fermilab (CDF) experiment performed the first measurement of the time-evolution of flavor-tagged B0s->J/psiphi decays, which probes mixing-induced CP-violation in the B0s sector. Any sizable deviation from zero of…

High Energy Physics - Experiment · Physics 2019-08-13 Diego Tonelli

B mesons provide an ideal laboratory for measurements of CP violation and searches for CP violation beyond the Standard Model. Recent measurements of the mixing phases of the $B_s^0$ and $B^0$ mesons, $\phi_s$ and $\sin2\beta$, using decays…

High Energy Physics - Experiment · Physics 2015-10-20 Greig A. Cowan

We discuss the most important Physics thus far extracted from studies of B meson decays. Measurements of the four CP violating angles accessible in B decay are reviewed as well as direct CP violation. A detailed discussion of the…

High Energy Physics - Phenomenology · Physics 2009-12-03 Marina Artuso , Elisabetta Barberio , Sheldon Stone

It is shown that in the approximation of $|\frac{q}{p}|$=1 the CP violation in $B^0_{d,s} \to l^+ l^-$ decays vanishes in SM. In a 2HDM with CP violating phases and MSSM the CP asymmetries depend on the parameters of models and can be as…

High Energy Physics - Phenomenology · Physics 2009-10-31 Chao-Shang Huang , Liao Wei

We study CP asymmetries in rare B decays within supersymmetry with a U(2)^3 flavour symmetry, motivated by the SUSY flavour and CP problems, the hierarchies in the Yukawa couplings and the absence so far of any direct evidence for SUSY.…

High Energy Physics - Phenomenology · Physics 2015-05-30 Riccardo Barbieri , Paolo Campli , Gino Isidori , Filippo Sala , David M. Straub

I present three studies from the LHCb experiment on the subject of direct CP violation in $B^0$ and $B_s$ decays. First, we measure the CP asymmetry in $B^\pm\to\psi K^\pm$ decays, with $\psi=J/\psi, \psi(2S)$, using 0.35 $fb^{-1}$ of $pp$…

High Energy Physics - Experiment · Physics 2019-08-13 Till Moritz Karbach

Measurements of branching fractions and CP-asymmetries of B^{-} \rightarrow D^{0}K^{-} modes allow a theoretically-clean extraction of the CKM angle \gamma. The method proposed by Atwood, Dunietz and Soni (ADS) makes use of a decay chain…

High Energy Physics - Experiment · Physics 2019-08-13 Paola Garosi