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We present preliminary results of several analyses searching for the effects of CP violation and mixing in the decay of $D^0$ mesons. We find no evidence of CP asymmetry in five different two-body decay modes of the $D^0$ to pairs of light…

High Energy Physics - Experiment · Physics 2012-08-27 CLEO Collaboration

The charm semileptonic decays $D^+\to\eta e^+\nu_{e}$ and $D^+\to\eta'e^+\nu_{e}$ are studied with a sample of $e^+e^-$ collision data corresponding to an integrated luminosity of 2.93 fb$^{-1}$ collected at $\sqrt{s}$ = 3.773 GeV with the…

High Energy Physics - Experiment · Physics 2018-03-16 M. Ablikim , M. N. Achasov , S. Ahmed , M. Albrecht , A. Amoroso , F. F. An , Q. An , Y. Bai , O. Bakina , R. Baldini Ferroli , Y. Ban , D. W. Bennett , J. V. Bennett , N. Berger , M. Bertani , D. Bettoni , J. M. Bian , F. Bianchi , E. Boger , I. Boyko , R. A. Briere , H. Cai , X. Cai , O. Cakir , A. Calcaterra , G. F. Cao , S. A. Cetin , J. Chai , J. F. Chang , G. Chelkov , G. Chen , H. S. Chen , J. C. Chen , M. L. Chen , P. L. Chen , S. J. Chen , X. R. Chen , Y. B. Chen , X. K. Chu , G. Cibinetto , H. L. Dai , J. P. Dai , A. Dbeyssi , D. Dedovich , Z. Y. Deng , A. Denig , I. Denysenko , M. Destefanis , F. De Mori , Y. Ding , C. Dong , J. Dong , L. Y. Dong , M. Y. Dong , Z. L. Dou , S. X. Du , P. F. Duan , J. Fang , S. S. Fang , X. Fang , Y. Fang , R. Farinelli , L. Fava , S. Fegan , F. Feldbauer , G. Felici , C. Q. Feng , E. Fioravanti , M. Fritsch , C. D. Fu , Q. Gao , X. L. Gao , Y. Gao , Y. G. Gao , Z. Gao , I. Garzia , K. Goetzen , L. Gong , W. X. Gong , W. Gradl , M. Greco , M. H. Gu , S. Gu , Y. T. Gu , A. Q. Guo , L. B. Guo , R. P. Guo , Y. P. Guo , Z. Haddadi , S. Han , X. Q. Hao , F. A. Harris , K. L. He , X. Q. He , F. H. Heinsius , T. Held , Y. K. Heng , T. Holtmann , Z. L. Hou , C. Hu , H. M. Hu , T. Hu , Y. Hu , G. S. Huang , J. S. Huang , X. T. Huang , X. Z. Huang , Z. L. Huang , T. Hussain , W. Ikegami Andersson , Q. Ji , Q. P. Ji , X. B. Ji , X. L. Ji , X. S. Jiang , X. Y. Jiang , J. B. Jiao , Z. Jiao , D. P. Jin , S. Jin , Y. Jin , T. Johansson , A. Julin , N. Kalantar-Nayestanaki , X. L. Kang , X. S. Kang , M. Kavatsyuk , B. C. Ke , T. Khan , A. Khoukaz , P. Kiese , R. Kliemt , L. Koch , O. B. Kolcu , B. Kopf , M. Kornicer , M. Kuemmel , M. Kuessner , M. Kuhlmann , A. Kupsc , W. Kühn , J. S. Lange , M. Lara , P. Larin , L. Lavezzi , S. Leiber , H. Leithoff , C. Leng , C. Li , Cheng Li , D. M. Li , F. Li , F. Y. Li , G. Li , H. B. Li , H. J. Li , J. C. Li , K. J. Li , Kang Li , Ke Li , Lei Li , P. L. Li , P. R. Li , Q. Y. Li , T. Li , W. D. Li , W. G. Li , X. L. Li , X. N. Li , X. Q. Li , Z. B. Li , H. Liang , Y. F. Liang , Y. T. Liang , G. R. Liao , D. X. Lin , B. Liu , B. J. Liu , C. X. Liu , D. Liu , F. H. Liu , Fang Liu , Feng Liu , H. B. Liu , H. M. Liu , Huanhuan Liu , Huihui Liu , J. B. Liu , J. P. Liu , J. Y. Liu , K. Liu , K. Y. Liu , Ke Liu , L. D. Liu , P. L. Liu , Q. Liu , S. B. Liu , X. Liu , Y. B. Liu , Z. A. Liu , Zhiqing Liu , Y. F. Long , X. C. Lou , H. J. Lu , J. G. Lu , Y. Lu , Y. P. Lu , C. L. Luo , M. X. Luo , X. L. Luo , X. R. Lyu , F. C. Ma , H. L. Ma , L. L. Ma , M. M. Ma , Q. M. Ma , T. Ma , X. N. Ma , X. Y. Ma , Y. M. Ma , F. E. Maas , M. Maggiora , Q. A. Malik , Y. J. Mao , Z. P. Mao , S. Marcello , Z. X. Meng , J. G. Messchendorp , G. Mezzadri , J. Min , T. J. Min , R. E. Mitchell , X. H. Mo , Y. J. Mo , C. Morales Morales , G. Morello , N. Yu. Muchnoi , H. Muramatsu , A. Mustafa , Y. Nefedov , F. Nerling , I. B. Nikolaev , Z. Ning , S. Nisar , S. L. Niu , X. Y. Niu , S. L. Olsen , Q. Ouyang , S. Pacetti , Y. Pan , M. Papenbrock , P. Patteri , M. Pelizaeus , J. Pellegrino , H. P. Peng , K. Peters , J. Pettersson , J. L. Ping , R. G. Ping , A. Pitka , R. Poling , V. Prasad , H. R. Qi , M. Qi , S. Qian , C. F. Qiao , N. Qin , X. S. Qin , Z. H. Qin , J. F. Qiu , K. H. Rashid , C. F. Redmer , M. Richter , M. Ripka , M. Rolo , G. Rong , Ch. Rosner , X. D. Ruan , A. Sarantsev , M. Savrié , C. Schnier , K. Schoenning , W. Shan , M. Shao , C. P. Shen , P. X. Shen , X. Y. Shen , H. Y. Sheng , J. J. Song , W. M. Song , X. Y. Song , S. Sosio , C. Sowa , S. Spataro , G. X. Sun , J. F. Sun , L. Sun , S. S. Sun , X. H. Sun , Y. J. Sun , Y. K Sun , Y. Z. Sun , Z. J. Sun , Z. T. Sun , C. J. Tang , G. Y. Tang , X. Tang , I. Tapan , M. Tiemens , B. Tsednee , I. Uman , G. S. Varner , B. Wang , B. L. Wang , D. Wang , D. Y. Wang , Dan Wang , K. Wang , L. L. Wang , L. S. Wang , M. Wang , Meng Wang , P. Wang , P. L. Wang , W. P. Wang , X. F. Wang , Y. Wang , Y. D. Wang , Y. F. Wang , Y. Q. Wang , Z. Wang , Z. G. Wang , Z. H. Wang , Z. Y. Wang , Zongyuan Wang , T. Weber , D. H. Wei , P. Weidenkaff , S. P. Wen , U. Wiedner , M. Wolke , L. H. Wu , L. J. Wu , Z. Wu , L. Xia , X. Xia , Y. Xia , D. Xiao , H. Xiao , Y. J. Xiao , Z. J. Xiao , Y. G. Xie , Y. H. Xie , X. A. Xiong , Q. L. Xiu , G. F. Xu , J. J. Xu , L. Xu , Q. J. Xu , Q. N. Xu , X. P. Xu , L. Yan , W. B. Yan , W. C. Yan , W. C. Yan , Y. H. Yan , H. J. Yang , H. X. Yang , L. Yang , Y. H. Yang , Y. X. Yang , Yifan Yang , M. Ye , M. H. Ye , J. H. Yin , Z. Y. You , B. X. Yu , C. X. Yu , J. S. Yu , C. Z. Yuan , Y. Yuan , A. Yuncu , A. A. Zafar , A. Zallo , Y. Zeng , Z. Zeng , B. X. Zhang , B. Y. Zhang , C. C. Zhang , D. H. Zhang , H. H. Zhang , H. Y. Zhang , J. Zhang , J. L. Zhang , J. Q. Zhang , J. W. Zhang , J. Y. Zhang , J. Z. Zhang , K. Zhang , L. Zhang , S. Q. Zhang , X. Y. Zhang , Y. H. Zhang , Y. T. Zhang , Yang Zhang , Yao Zhang , Yu Zhang , Z. H. Zhang , Z. P. Zhang , Z. Y. Zhang , G. Zhao , J. W. Zhao , J. Y. Zhao , J. Z. Zhao , Lei Zhao , Ling Zhao , M. G. Zhao , Q. Zhao , S. J. Zhao , T. C. Zhao , Y. B. Zhao , Z. G. Zhao , A. Zhemchugov , B. Zheng , J. P. Zheng , W. J. Zheng , Y. H. Zheng , B. Zhong , L. Zhou , X. Zhou , X. K. Zhou , X. R. Zhou , X. Y. Zhou , Y. X. Zhou , J. Zhu , J. Zhu , K. Zhu , K. J. Zhu , S. Zhu , S. H. Zhu , X. L. Zhu , Y. C. Zhu , Y. S. Zhu , Z. A. Zhu , J. Zhuang , B. S. Zou , J. H. Zou

We report a measurement of the bottom-strange meson mixing phase \beta_s using the time evolution of B0_s -> J/\psi (->\mu+\mu-) \phi (-> K+ K-) decays in which the quark-flavor content of the bottom-strange meson is identified at…

High Energy Physics - Experiment · Physics 2014-09-30 CDF Collaboration

We report on a measurement of CP-violating asymmetries (Acp) in the Cabibbo-suppressed D0 --> pi+ pi- and D0 --> K+K- decays reconstructed in a data sample corresponding to 5.9 fb-1 of integrated luminosity collected by the upgraded…

High Energy Physics - Experiment · Physics 2013-05-30 CDF Collaboration , T. Aaltonen

We present evidence for D0-anti-D0 mixing in D0 --> K+pi- decays from 384 fb^{-1} of e+e- colliding-beam data recorded near sqrt(s) 10.6 GeV with the BaBar detector at the PEP-II storage rings at SLAC. We find the mixing parameters x'^2 =…

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

The D0 meson can decay to the wrong sign K+pi- state either through a doubly Cabibbo suppressed decay or via mixing to the D0bar state followed by the Cabibbo favoured decay D0bar -> K+ pi-. We measure the rate of wrong sign decays relative…

High Energy Physics - Experiment · Physics 2007-05-23 Ulrik Egede

We have searched for flavor-changing neutral current decays and lepton-number-violating decays of D^+ and D^+_s mesons to final states of the form h^+- e^-+ e^+, where h is either \pi or K. We use the complete samples of CLEO-c open-charm…

It is shown that the experimental data of psi(3686) and psi(3770) are consistent with a -90 degree phase between the strong and eletromagnetic decay amplitudes. The e+ e- -> rho-pi measured at psi(3770) is also consistent with the branching…

High Energy Physics - Phenomenology · Physics 2017-08-23 P. Wang

We report a measurement of ${D^{0}}$-${\overline{D}{}^{0}}$ mixing parameters and a search for indirect $CP$ violation through a time-dependent amplitude analysis of ${D^0\to K_S^0\pi^+\pi^-}$ decays. The results are based on 921~fb$^{-1}$…

High Energy Physics - Experiment · Physics 2014-06-11 Belle Collaboration , A. Abdesselam , I. Adachi , H. Aihara , K. Arinstein , D. M. Asner , V. Aulchenko , T. Aushev , R. Ayad , A. M. Bakich , A. Bala , V. Bhardwaj , B. Bhuyan , A. Bobrov , A. Bondar , G. Bonvicini , A. Bozek , D. Červenkov , V. Chekelian , A. Chen , B. G. Cheon , I. -S. Cho , K. Cho , V. Chobanova , Y. Choi , D. Cinabro , J. Dalseno , M. Danilov , Z. Doležal , Z. Drásal , A. Drutskoy , D. Dutta , S. Eidelman , H. Farhat , J. E. Fast , T. Ferber , O. Frost , V. Gaur , S. Ganguly , A. Garmash , R. Gillard , Y. M. Goh , B. Golob , J. Haba , T. Hara , K. Hayasaka , H. Hayashii , X. H. He , Y. Hoshi , W. -S. Hou , H. J. Hyun , T. Iijima , A. Ishikawa , R. Itoh , Y. Iwasaki , T. Iwashita , I. Jaegle , T. Julius , J. H. Kang , E. Kato , P. Katrenko , H. Kawai , T. Kawasaki , H. Kichimi , 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. Križan , P. Krokovny , B. Kronenbitter , T. Kuhr , R. Kumar , T. Kumita , A. Kuzmin , S. -H. Lee , Y. Li , L. Li Gioi , J. Libby , C. Liu , Y. Liu , Z. Q. Liu , D. Liventsev , P. Lukin , H. Miyata , R. Mizuk , G. B. Mohanty , A. Moll , R. Mussa , M. Nakao , Z. Natkaniec , M. Nayak , E. Nedelkovska , N. K. Nisar , S. Nishida , O. Nitoh , S. Ogawa , P. Pakhlov , H. Park , H. K. Park , T. K. Pedlar , R. Pestotnik , M. Petrič , L. E. Piilonen , E. Ribežl , M. Ritter , M. Röhrken , A. Rostomyan , H. Sahoo , T. Saito , Y. Sakai , S. Sandilya , D. Santel , L. Santelj , T. Sanuki , Y. Sato , V. Savinov , O. Schneider , G. Schnell , C. Schwanda , R. Seidl , D. Semmler , K. Senyo , M. E. Sevior , M. Shapkin , V. Shebalin , C. P. Shen , T. -A. Shibata , J. -G. Shiu , B. Shwartz , A. Sibidanov , F. Simon , Y. -S. Sohn , A. Sokolov , E. Solovieva , S. Stanič , M. Starič , T. Sumiyoshi , U. Tamponi , G. Tatishvili , Y. Teramoto , K. Trabelsi , M. Uchida , S. Uehara , T. Uglov , Y. Unno , S. Uno , P. Urquijo , Y. Ushiroda , Y. Usov , 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 , X. L. Wang , M. Watanabe , Y. Watanabe , S. Wehle , K. M. Williams , E. Won , Y. Yamashita , S. Yashchenko , Y. Yook , C. Z. Yuan , C. C. Zhang , V. Zhilich , V. Zhulanov , A. Zupanc

We present new measurements of branching fractions for the color-favored decays B^- --> D^0 pi^- and Bbar^0 --> D^+ pi^-. Using 9.67 x 10^6 BBbar pairs collected with the CLEO detector, we obtain the branching fractions BR(B^- --> D^0 pi^-…

High Energy Physics - Experiment · Physics 2010-04-08 S. Ahmed , CLEO Collaboration

New results from charm experiments have led to renewed interest in this physics. The charm sector is now seen as a powerful tool to search for new physics and to advance our understanding of the standard model. We owe much of this progress…

High Energy Physics - Experiment · Physics 2014-11-17 Alex Smith

We present improved measurements of the branching fractions for the decays B0 --> Ds+pi- and B0-bar --> Ds+K- using a data sample of 657x10^6 BB-bar events collected at the Y(4S) resonance with the Belle detector at the KEKB…

High Energy Physics - Experiment · Physics 2014-11-21 The Belle Collaboration , A. Das

Precision determination of the CKM angle $\gamma/\phi_3$ depends upon constraints on charm mixing amplitudes, measurements of doubly-Cabibbo suppressed amplitudes and relative phases, and studies of charm Dalitz plots tagged by flavor or CP…

High Energy Physics - Experiment · Physics 2010-01-05 Eric White , Qing He

If the true values of the D0-anti-D0 mixing parameters lie within the one sigma ranges of recent measurements, then there is strong evidence for a large width difference, y > 0.01, and large SU(3) breaking effects in strong phases, \delta >…

High Energy Physics - Phenomenology · Physics 2008-11-26 Sven Bergmann , Yuval Grossman , Zoltan Ligeti , Yosef Nir , Alexey A. Petrov

We describe several measurements using the decays D0->K+K- and pi+pi-. We find the ratio of partial widths, Gamma(D0->K+K-)/Gamma(D0->pi+pi-), to be 2.96+/-0.16+/-0.15, where the first error is statistical and the second is systematic. We…

High Energy Physics - Experiment · Physics 2010-04-08 S. E. Csorna , CLEO Collaboration

Assuming SU(3) symmetry for the strong phases in the four decay modes $B\rarrow \pi^-\pi^+, \pi^0 \pi^+, \pi^- K^+, \pi^- \bar{K}^0$ and ignoring the relative small electroweak penguin effects in those decays, the weak phase $\gamma$ and…

High Energy Physics - Phenomenology · Physics 2014-11-17 Yue-Liang Wu , Yu-Feng Zhou

A high statistics sample of photo-produced charm from the FOCUS(E831) experiment at Fermilab has been used to search for direct CP violation in the decays D+->K_S pi+ and D+ -> K_S K+. We have measured the following asymmetry parameters…

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

Using the entire CLEO-c psi(3770) to DDbar event sample, corresponding to an integrated luminosity of 818 pb^-1 and approximately 5.4 x 10^6 DDbar events, we measure the form factors for the decays D0 to rho- e+ nu_e and D+ to rho0 e+ nu_e…

The inclusive production of D*+- mesons in photon-photon collisions has been measured using the OPAL detector at LEP at e+e- centre-of-mass energies of 183 and 189GeV. The D* mesons are reconstructed in their decay to D0pi+ with the D0…

High Energy Physics - Experiment · Physics 2008-11-07 G. Abbiendi , the OPAL collaboration

Using a sample of 1.8 million DDbar meson pairs collected at the psi(3770) with the CLEO-c detector, we study the semileptonic decays D^0 -> pi^- e^+ nu_e, D^+ -> pi^0 e^+ \nu_e, D^0 -> K^- e^+ \nu_e, and D^+ -> Kbar^0 e^+ nu_e. For the…

High Energy Physics - Experiment · Physics 2010-04-08 CLEO Collaboration , S. Dobbs