English
Related papers

Related papers: Measurement of the CKM angle phi2 (alpha)

200 papers

In this proceeding, we report the recent measurements of the CKM angle \phi_1(\beta) using large data samples collected by the Belle and BaBar experiments. The experiments have collected more than 1 billion B anti-B pairs of data sample at…

High Energy Physics - Experiment · Physics 2019-08-14 H. Sahoo

We show that the angle $\alpha_{ds}$ of the ``flattest'' unitarity triange can be directly measured using the decays $\overline{B}_{d}\to \phi \overline{K}^{(*)0}$ and $\overline{B}_{s}\to \phi{K}^{(*)0}$. Using both $\overline{B}_{d}$ and…

High Energy Physics - Phenomenology · Physics 2024-02-16 Roy Aleksan , Luis Oliver , Emmanuel Perez

We present a summary of measurements sensitive to the CKM angles \phi_1 and \phi_2, performed by the Belle experiment using the final data sample of 772 \times 10^{6} $B\bar{B}$ pairs at the \Upsilon(4S) resonance produced at the KEK…

High Energy Physics - Experiment · Physics 2013-01-23 P. Vanhoefer

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 present a review on the measurements of the CKM angle gamma (phi_3) as performed by the BABAR and Belle experiments at the asymmetric-energy e+e- B factories colliders PEP-II and KEKB.

High Energy Physics - Experiment · Physics 2019-08-13 Vincent Tisserand

The role of the decay mode B->rho pi for the determination of the unitarity angle alpha is critically examined in view of the smaller than expected ratio B(B->rho+/- pi-/+)/B(B->rho0 pi+/-) found by the CLEO collaboration.

High Energy Physics - Phenomenology · Physics 2007-05-23 Aldo Deandrea

We study B0->rho0rho0 decays in a sample of 465*10^6 Upsilon (4S)->BBbar events collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider located at the Stanford Linear Accelerator Center (SLAC). We measure the…

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

We report expected sensitivities for the measurement of the three angles of the Unitarity Triangle in B meson decays using 50 ab-1 of electron-positron collisions recorded by the Belle II detector at the SuperKEKB collider at KEK, Japan.

High Energy Physics - Experiment · Physics 2018-12-10 Benjamin Oberhof

We report on $CP$ violation measurements at Belle and Belle II, focusing on improving the precision of observables sensitive to the Cabbibo-Kobayashi-Maskawa matrix parameters. We present recent measurements of the CKM unitarity angle…

High Energy Physics - Experiment · Physics 2025-04-02 Ansu Johnson

We present recent results on CP violation, and the determination of CKM angle beta, with the decay B0->K+K-K0, with BABAR and Belle detectors.

High Energy Physics - Experiment · Physics 2019-08-14 Emanuele Di Marco

The precise measurement of the CKM angle $\phi_3$ is important to further test the Standard Model description of $CP$ violation. The small values of the branching fractions of the decays involved in the measurement limits the precision,…

High Energy Physics - Experiment · Physics 2020-02-19 P. K. Resmi

In this review recent studies on $CP$ violation and related hadronic $B$ decays by the Belle experiment, in particular measurements of CKM angles $\phi_1$ and $\phi_2$ are reported.

High Energy Physics - Experiment · Physics 2019-08-13 Bilas Pal

I will review the latest developments in determining the CP-violating phases of the CKM matrix elements from measurements by the BaBar and BELLE experiments at the high-luminosity B factories (PEP-II and KEKB). The emphasis will be on the…

High Energy Physics - Experiment · Physics 2010-06-22 Owen Long

In this paper, we study and try to find the constraint on the CKM angle alpha from the experimental measurements of CP violation in B_d^0 --> pi^+ pi^- decay, as reported very recently by BaBar and Belle Collaborations. After considering…

High Energy Physics - Phenomenology · Physics 2014-11-17 Cai-Dian Lü , Zhenjun Xiao

We present several alternative techniques used by the BaBar Collaboration in order to measure the Unitarity Triangle angle gamma. We also present the results of two searches designed to improve the measurements of sin(2beta) using penguin B…

High Energy Physics - Experiment · Physics 2007-05-23 Gabriele Benelli

We update the profile of the CKM matrix. The apex (rhobar,etabar) of the Unitarity Triangle is given by means of a global fit. We propose to include therein sin2alpha from the CP-violating asymmetries in B0->rho+rho-, using isospin to…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. Charles , A. Hocker , H. Lacker , S. Laplace , F. R. Le Diberder , J. Malcles , J. Ocariz , M. Pivk , L. Roos

We present a measurement of the Cabibbo-Kobayashi-Maskawa unitarity triangle angle $ \phi_{3} $ (also known as~$\gamma$) using a model-independent Dalitz plot analysis of \linebreak $B^+\to D\left(K_{S}^{0}h^{+}h^{-}\right)h^+$, where $D$…

High Energy Physics - Experiment · Physics 2022-03-02 Belle , Belle II Collaborations , : , F. Abudinén , L. Aggarwal , H. Ahmed , H. Aihara , N. Akopov , S. Al Said , A. Aloisio , N. Anh Ky , H. Atmacan , V. Aushev , R. Ayad , V. Babu , S. Bacher , S. Baehr , S. Bahinipati , P. Bambade , Sw. Banerjee , S. Bansal , J. Baudot , J. Becker , P. K. Behera , K. Belous , J. V. Bennett , F. U. Bernlochner , M. Bertemes , E. Bertholet , M. Bessner , S. Bettarini , F. Bianchi , T. Bilka , D. Biswas , A. Bobrov , D. Bodrov , G. Bonvicini , J. Borah , A. Bozek , M. Bračko , P. Branchini , R. A. Briere , T. E. Browder , A. Budano , S. Bussino , M. Campajola , L. Cao , G. Casarosa , C. Cecchi , P. Cheema , V. Chekelian , A. Chen , B. G. Cheon , K. Chilikin , K. Chirapatpimol , H. -E. Cho , S. -J. Cho , S. -K. Choi , Y. Choi , S. Choudhury , D. Cinabro , L. Corona , S. Cunliffe , T. Czank , S. Das , F. Dattola , E. De La Cruz-Burelo , G. de Marino , S. K. Maurya , G. De Nardo , M. De Nuccio , G. De Pietro , R. de Sangro , M. Destefanis , S. Dey , A. De Yta-Hernandez , R. Dhamija , A. Di Canto , Z. Doležal , I. Domínguez Jiménez , T. V. Dong , M. Dorigo , D. Dossett , S. Dubey , G. Dujany , M. Eliachevitch , D. Epifanov , P. Feichtinger , D. Ferlewicz , T. Fillinger , S. Fiore , A. Fodor , F. Forti , B. G. Fulsom , A. Gabrielli , E. Ganiev , M. Garcia-Hernandez , V. Gaur , A. Gaz , R. Giordano , A. Giri , A. Glazov , R. Godang , P. Goldenzweig , B. Golob , W. Gradl , E. Graziani , D. Greenwald , T. Gu , Y. Guan , K. Gudkova , J. Guilliams , C. Hadjivasiliou , S. Halder , T. Hara , O. Hartbrich , K. Hayasaka , H. Hayashii , S. Hazra , I. Heredia de la Cruz , A. Hershenhorn , T. Higuchi , E. C. Hill , W. -S. Hou , C. -L. Hsu , T. Iijima , K. Inami , A. Ishikawa , M. Iwasaki , W. W. Jacobs , E. -J. Jang , Y. Jin , H. Junkerkalefeld , A. B. Kaliyar , K. H. Kang , R. Karl , G. Karyan , Y. Kato , C. Ketter , C. Kiesling , C. -H. Kim , D. Y. Kim , K. -H. Kim , Y. -K. Kim , K. Kinoshita , P. Kodyš , T. Koga , S. Kohani , S. Korpar , E. Kovalenko , T. M. G. Kraetzschmar , P. Križan , P. Krokovny , T. Kuhr , J. Kumar , M. Kumar , R. Kumar , K. Kumara , A. Kuzmin , Y. -J. Kwon , S. Lacaprara , Y. -T. Lai , C. La Licata , L. Lanceri , J. S. Lange , R. Leboucher , S. C. Lee , P. Leitl , J. Li , S. X. Li , L. Li Gioi , J. Libby , K. Lieret , Z. Liptak , Q. Y. Liu , D. Liventsev , S. Longo , T. Lueck , C. Lyu , M. Maggiora , R. Maiti , S. Maity , R. Manfredi , E. Manoni , S. Marcello , A. Martini , L. Massaccesi , M. Masuda , K. Matsuoka , D. Matvienko , J. A. McKenna , F. Meier , M. Merola , F. Metzner , M. Milesi , C. Miller , K. Miyabayashi , R. Mizuk , G. B. Mohanty , N. Molina-Gonzalez , H. -G. Moser , F. Mueller , C. Murphy , R. Mussa , K. R. Nakamura , T. Nakano , M. Nakao , M. Naruki , D. Narwal , A. Natochii , L. Nayak , M. Nayak , G. Nazaryan , N. K. Nisar , S. Nishida , K. Nishimura , Y. Onishchuk , H. Ono , P. Oskin , G. Pakhlova , A. Paladino , A. Panta , E. Paoloni , K. Parham , S. -H. Park , A. Passeri , A. Pathak , S. Patra , R. Pestotnik , L. E. Piilonen , T. Podobnik , S. Pokharel , L. Polat , C. Praz , S. Prell , E. Prencipe , M. T. Prim , H. Purwar , A. Rabusov , P. Rados , S. Raiz , S. Reiter , M. Remnev , I. Ripp-Baudot , G. Rizzo , L. B. Rizzuto , S. H. Robertson , M. Röhrken , J. M. Roney , A. Rostomyan , N. Rout , D. Sahoo , D. A. Sanders , S. Sandilya , L. Santelj , Y. Sato , V. Savinov , B. Scavino , G. Schnell , J. Schueler , A. J. Schwartz , Y. Seino , A. Selce , K. Senyo , M. E. Sevior , M. Shapkin , C. Sharma , T. Shillington , B. Shwartz , A. Sibidanov , F. Simon , J. B. Singh , A. Soffer , E. Solovieva , S. Spataro , B. Spruck , S. Stefkova , Z. S. Stottler , R. Stroili , K. Sumisawa , W. Sutcliffe , S. Y. Suzuki , M. Tabata , M. Takizawa , K. Tanida , F. Tenchini , R. Tiwary , D. Tonelli , E. Torassa , K. Trabelsi , M. Uchida , I. Ueda , T. Uglov , K. Uno , S. Uno , Y. Ushiroda , S. E. Vahsen , R. van Tonder , K. E. Varvell , A. Vinokurova , L. Vitale , H. M. Wakeling , E. Wang , M. -Z. Wang , X. L. Wang , A. Warburton , S. Watanuki , O. Werbycka , C. Wessel , E. Won , B. D. Yabsley , W. Yan , H. Ye , K. Yoshihara , Y. Yusa , L. Zani , Y. Zhai , Y. Zhang , V. Zhilich , Q. D. Zhou , X. Y. Zhou , V. I. Zhukova

The CKM angle $\gamma/\phi_{3}$ had been measured by two B-factories, the PEPII collider for the BaBar experiment and the KEKB collider for the Belle experiments. The present paper reports recent progress in $\gamma/\phi_{3}$.

High Energy Physics - Experiment · Physics 2011-08-22 Yoshiyuki Onuki

The CKM angle $\phi_3$ is less precisely known than the angle $\phi_1$ and the only one that is accessible with tree-level decays in a theoretically clean way. The key method to measure $\phi_3$ is through the interference between $B^+\to…

High Energy Physics - Experiment · Physics 2018-12-11 P. K. Resmi

We report the recent results related to $\pi-K$ interactions based on the data collected by the Belle experiment at the KEKB collider. This includes the branching fraction and $CP$ asymmetry measurements of $B^+\to K^+K^-\pi^+$ decay,…

High Energy Physics - Experiment · Physics 2018-03-01 Bilas Pal