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We report the results of a search for the rare baryonic decays $B^0 \to p\bar{p}$, $\Lambda\bar{\Lambda}$, and $B^+ \to p\bar{\Lambda}$. The analysis is based on a data set of $31.7\times 10^6 B\bar{B}$ events collected by the Belle…

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

The large data sample recorded with the Belle detector at the Y(5S) energy provides a unique opportunity to study the poorly-known Bs0 meson. Several analyses, made with a data sample representing an integrated luminosity of 23.6 /fb, are…

High Energy Physics - Experiment · Physics 2019-08-13 Remi Louvot

We report on a search for the exclusive two-body charmless hadronic B meson decays B-> eta' rho, B-> eta' K*, B-> eta' phi, B-> eta' omega and B->eta' eta('). The results are obtained from a data sample containing 535 x 10^6 BBbar pairs…

High Energy Physics - Experiment · Physics 2019-08-14 J. Schümann

We report on a search for the charmless decays $B^{+} \to\phi\pi^{+}$ and $B^{0} \to\phi \pi^{0}$ that are strongly suppressed in the Standard Model. The analysis is based on a data sample of $657 \times 10^6$ $B \bar{B}$ pairs collected at…

High Energy Physics - Experiment · Physics 2015-06-05 Belle collaboration , J. H. Kim , M. Nakao , I. Adachi , K. Adamczyk , H. Aihara , D. M. Asner , V. Aulchenko , T. Aushev , A. M. Bakich , K. Belous , B. Bhuyan , M. Bischofberger , A. Bondar , G. Bonvicini , A. Bozek , M. Bračko , T. E. Browder , M. -C. Chang , P. Chang , V. Chekelian , A. Chen , P. Chen , B. G. Cheon , K. Chilikin , I. -S. Cho , K. Cho , Y. Choi , J. Dalseno , J. Dingfelder , Z. Doležal , Z. Drásal , D. Dutta , S. Eidelman , H. Farhat , J. E. Fast , V. Gaur , N. Gabyshev , R. Gillard , Y. M. Goh , B. Golob , J. Haba , T. Hara , K. Hayasaka , H. Hayashii , Y. Horii , Y. Hoshi , W. -S. Hou , Y. B. Hsiung , H. J. Hyun , T. Iijima , K. Inami , A. Ishikawa , R. Itoh , M. Iwabuchi , Y. Iwasaki , T. Iwashita , T. Julius , J. H. Kang , T. Kawasaki , H. Kichimi , C. Kiesling , H. J. Kim , H. O. Kim , J. B. Kim , K. T. Kim , Y. J. Kim , B. R. Ko , P. Kodyš , S. Korpar , R. T. Kouzes , P. Krokovny , T. Kuhr , A. Kuzmin , P. Kvasnička , Y. -J. Kwon , S. -H. Lee , J. Li , Y. Li , J. Libby , C. -L. Lim , Y. Liu , Z. Q. Liu , D. Liventsev , R. Louvot , K. Miyabayashi , H. Miyata , Y. Miyazaki , G. B. Mohanty , A. Moll , N. Muramatsu , E. Nakano , Z. Natkaniec , C. Ng , S. Nishida , O. Nitoh , T. Ohshima , S. Okuno , S. L. Olsen , G. Pakhlova , C. W. Park , H. Park , H. K. Park , T. K. Pedlar , R. Pestotnik , M. Petrič , L. E. Piilonen , M. Ritter , S. Ryu , H. Sahoo , Y. Sakai , S. Sandilya , T. Sanuki , O. Schneider , C. Schwanda , K. Senyo , M. E. Sevior , M. Shapkin , C. P. Shen , T. -A. Shibata , J. -G. Shiu , B. Shwartz , A. Sibidanov , F. Simon , J. B. Singh , P. Smerkol , Y. -S. Sohn , E. Solovieva , S. Stanič , M. Starič , M. Sumihama , T. Sumiyoshi , Y. Teramoto , M. Uchida , T. Uglov , Y. Unno , S. Uno , P. Urquijo , P. Vanhoefer , G. Varner , V. Vorobyev , P. Wang , M. Watanabe , Y. Watanabe , K. M. Williams , E. Won , H. Yamamoto , Y. Yamashita , Z. P. Zhang , V. Zhilich , V. Zhulanov , A. Zupanc

We report the first observation of a b -> u type charmless baryonic B decay, B+ -> p pbar pi+, as well as b -> s type B0 -> p pbar K0 and B+ -> p pbar K*+ decays. The analysis is based on a 78fb^{-1} data sample recorded on the Upsilon(4S)…

High Energy Physics - Experiment · Physics 2019-08-14 M. -Z. Wang

The large data sample being recorded with the Belle detector at the Y(5S) energy provides a unique opportunity to study the poorly-known Bs0 meson. Three analyses, using a sample of 23.6 /fb, are presented. We report the first observation…

High Energy Physics - Experiment · Physics 2019-08-13 R. Louvot

We have searched for two-body charmless hadronic decays of $B$ mesons. Final states include $\pi\pi$, $K \pi$, and $KK$ with both charged and neutral kaons and pions; $\pi\rho$, $K \rho$, and $K^*\pi$; and $K\phi$, $ K^*\phi$, and…

High Energy Physics - Experiment · Physics 2008-11-26 CLEO Collaboration , D. M. Asner et al

Recent results of rare B decay analyses based on 31.9 million $B\bar{B}$ collected with the Belle detector at the KEKB asymmetric $e^+e^-$ collider are presented. We have made the first observation of charmless baryonic decay $B^\pm \to p…

High Energy Physics - Experiment · Physics 2007-05-23 H. C. Huang

The B meson decay modes B --> D p pbar and B --> D* p pbar have been studied using 29.4 fb^{-1} of data collected with the Belle detector at KEKB. The B0bar --> D0 p pbar and B0bar --> D*0 p pbar decays have been observed for the first time…

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

We present the first evidence of the decay B0 --> rho0 pi0, using 140fb^-1 of data collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e+e- collider. We detect a signal with a significance of 3.5 standard…

High Energy Physics - Experiment · Physics 2019-08-14 J. Dragic , T. Gershon

We present several searches for charmless hadronic two-body and three-body decays of B mesons from electron-positron annihilation data collected by the BABAR detector near the Upsilon(4S) resonance. We report the preliminary branching…

High Energy Physics - Experiment · Physics 2017-08-23 Thomas Schietinger

We describe searches for B meson decays to the charmless vector-vector final states omega K* and omega rho in 89 million B-Bbar pairs produced in e+e- annihilation at sqrt(s)=10.58 GeV. We measure the following branching fractions in units…

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

We report a measurement of the branching fractions in the B0->J/Psi pi+pi- decay based on a 140/fb data sample collected at the Upsilon(4S) energy with the Belle detector at the KEKB e+e- collider. Charged pion pairs are found to arise…

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

We report a search for the decays $B^0\to K^{*0} \overline{K}{}^{*0}$ and $B^0\to K^{*0} K^{*0}$. We also measure other charmless decay modes with $K^+\pi^-K^-\pi^+$ and $K^{+}\pi^{-}K^{+}\pi^{-}$ final states. The results are obtained from…

High Energy Physics - Experiment · Physics 2019-08-13 C. -C. Chiang

Using 22.7M BBbar events collected with the BABAR detector at SLAC, we present preliminary measurements of the branching fractions for charmless hadronic decays of B mesons into two-body, quasi two-body and three-body final states with…

High Energy Physics - Experiment · Physics 2007-05-23 Marcella Bona

We report results of the Dalitz analysis of the three-body charmless B->K+pi+pi- and B->K+K+K- decays based on a 140fb^{-1} data sample collected with the Belle detector. Measurements of branching fractions for quasi-two-body decays to…

High Energy Physics - Experiment · Physics 2017-08-23 A. Bondar

We report measurements of the charmless semileptonic decays $B^0 \to \pi^- / \rho^- \ell^{+} \nu$ and $B^+ \to \pi^0 / \rho^0 \ell^{+} \nu$, based on a sample of $2.75 \times 10^8$ $B \bar{B}$ events collected at the $\Upsilon(4S)$…

High Energy Physics - Experiment · Physics 2019-08-14 T. Hokuue

We report a search for the charmless baryonic decay $B^0\to p\bar{p}\pi^0$ with a data sample corresponding to an integrated luminosity of 711~$\rm fb^{-1}$ containing $(772\pm 10)\times 10^6$ $B^0\bar{B}^0$ pairs. The data was collected by…

High Energy Physics - Experiment · Physics 2019-06-05 Belle Collaboration , B. Pal , I. Adachi , K. Adamczyk , H. Aihara , D. M. Asner , H. Atmacan , V. Aulchenko , T. Aushev , R. Ayad , V. Babu , I. Badhrees , V. Bansal , P. Behera , C. Beleño , M. Berger , V. Bhardwaj , B. Bhuyan , T. Bilka , J. Biswal , A. Bobrov , A. Bozek , M. Bračko , T. E. Browder , M. Campajola , L. Cao , D. Červenkov , V. Chekelian , A. Chen , B. G. Cheon , K. Chilikin , K. Cho , S. -K. Choi , Y. Choi , D. Cinabro , S. Cunliffe , S. Di Carlo , Z. Doležal , T. V. Dong , D. Dossett , S. Eidelman , D. Epifanov , J. E. Fast , T. Ferber , B. G. Fulsom , R. Garg , V. Gaur , N. Gabyshev , A. Garmash , A. Giri , P. Goldenzweig , Y. Guan , J. Haba , T. Hara , K. Hayasaka , H. Hayashii , W. -S. Hou , C. -L. Hsu , T. Iijima , K. Inami , A. Ishikawa , R. Itoh , Y. Iwasaki , W. W. Jacobs , S. Jia , Y. Jin , D. Joffe , K. K. Joo , A. B. Kaliyar , G. Karyan , H. Kichimi , C. Kiesling , C. H. Kim , D. Y. Kim , K. T. Kim , S. H. Kim , K. Kinoshita , P. Kodyš , S. Korpar , D. Kotchetkov , P. Križan , R. Kroeger , P. Krokovny , R. Kulasiri , Y. -J. Kwon , J. Y. Lee , S. C. Lee , L. K. Li , Y. B. Li , L. Li Gioi , J. Libby , D. Liventsev , P. -C. Lu , T. Luo , J. MacNaughton , C. MacQueen , M. Masuda , T. Matsuda , D. Matvienko , M. Merola , K. Miyabayashi , H. Miyata , R. Mizuk , G. B. Mohanty , M. Nakao , K. J. Nath , M. Nayak , N. K. Nisar , S. Nishida , K. Nishimura , S. Ogawa , H. Ono , Y. Onuki , P. Pakhlov , G. Pakhlova , S. Pardi , S. -H. Park , S. Patra , S. Paul , T. K. Pedlar , R. Pestotnik , L. E. Piilonen , V. Popov , E. Prencipe , A. Rostomyan , G. Russo , Y. Sakai , M. Salehi , S. Sandilya , T. Sanuki , V. Savinov , O. Schneider , G. Schnell , J. Schueler , C. Schwanda , A. J. Schwartz , Y. Seino , K. Senyo , M. E. Sevior , C. P. Shen , J. -G. Shiu , F. Simon , A. Sokolov , E. Solovieva , M. Starič , Z. S. Stottler , J. F. Strube , T. Sumiyoshi , W. Sutcliffe , M. Takizawa , U. Tamponi , K. Tanida , F. Tenchini , M. Uchida , T. Uglov , S. Uno , P. Urquijo , R. Van Tonder , G. Varner , A. Vinokurova , B. Wang , C. H. Wang , M. -Z. Wang , P. Wang , M. Watanabe , S. Watanuki , E. Won , S. B. Yang , H. Ye , J. Yelton , Y. Yusa , J. Zhang , Z. P. Zhang , V. Zhilich , V. Zhukova

We report the first observation of a B meson decay that is not accessible by a direct spectator process. The channel B0bar -> Ds+ K- is found in a sample of 85 timse 10^6 B Bbar events, collected with the Belle detector at KEKB, with a…

High Energy Physics - Experiment · Physics 2008-11-26 P. Krokovny , The Belle Collaboration

We report on a search for charmless hadronic B decays to the three-body final states, K0S h+ pi-, K+ h- pi0, K0S h+ pi0 (h+- denotes a charged pion or kaon), and their charge conjugates, using 13.5 fb^{-1} of integrated luminosity produced…

High Energy Physics - Experiment · Physics 2010-04-08 E. Eckhart