Measurement of the electroweak penguin process B → Xsℓ+ℓ-
J. Kaneko,K. Abe,T. Abe,I. Adachi,Byoung Sup Ahn,Hiroaki Aihara,M. Akatsu,Y. Asano,Tsukasa Aso,V.M. Aulchenko,T. Aushev,A. M. Bakich,Yong Ban,Elzbieta Banas,W. Bartel,A. Bay,Prafulla Kumar Behera,Alexander Bondar,A. Bozek,M. Bračko,Jolanta Brodzicka,T. E. Browder,B. C. K. Casey,P. Chang,Y. Chao,K. F. Chen,B. G. Cheon,R. Chistov,Y. Choi,Young-Il Choi,M. Danilov,L. Y. Dong,S. Eidelman,V. Eiges,Yuji Enari,C.W. Everton,F. Fang,H. Fujii,Chikara Fukunaga,N. Gabyshev,A. Garmash,Timothy Gershon,R. Guo,J. Haba,F. Handa,T. Hara,Y. Harada,N. C. Hastings,H. Hayashii,M. Hazumi,E. M. Heenan,I. Higuchi,Takuya Higuchi,L. Hinz,T. Hojo,Y. Hoshi,W. S. Hou,H. C. Huang,T. Igaki,Y. Igarashi,T. Iijima,K. Inami,A. Ishikawa,Hirokazu Ishino,R. Itoh,Hiroyuki Iwasaki,Y. Iwasaki,H. K. Jang,J. H. Kang,J. S. Kang,N. Katayama,H. Kawai,Y. Kawakami,N. Kawamura,T. Kawasaki,H. Kichimi,D. W. Kim,Heejong Kim,H. J. Kim,Ho Kim,Hyunwoo Kim,Seong Keun Kim,K. Kinoshita,S. Kobayashi,S. Korpar,P. Križan,P. Krokovny,R. Kulasiri,Suneel Kumar,Y. J. Kwon,J. S. Lange,G. Leder,S. H. Lee,J. Li,Antonio Limosani,Rong-Shyang Lu,J. MacNaughton,Gobinda Majumder,F. Mandl,Daniel Robert Marlow,S. Matsumoto,T. Matsumoto,W. Mitaroff,K. Miyabayashi,Y. Miyabayashi,H. Miyake,G. R. Moloney,T. Mori,T. Nagamine,Y. Nagasaka,T. Nakadaira,E. Nakano,M. Nakao,J. W. Nam,K. Neichi,S. Nishida,O. Nitoh,S. Noguchi,T. Nozaki,S. Ogawa,T. Ohshima,T. Okabe,S. Okuno,S.L. Olsen,Y. Onuki,W. Ostrowicz,H. Ozaki,P. Pakhlov,H. Palka,C. W. Park,H. Park,K. S. Park,J. P. Perroud,M. D. Peters,L. E. Piilonen,N.I. Root,K. Rybicki,Hiroyuki Sagawa,Y. Sakai,Hiroshi Sakamoto,M. Satapathy,A. Satpathy,O. Schneider,S. Schrenk,C. Schwanda,S. Semenov,K. Senyo,Rolf Seuster,H. Shibuya,B. Shwartz,V.A. Sidorov,Jasvinder A. Singh,N. Soni,S. Stanič,K. Sumisawa,T. Sumiyoshi,Kei Suzuki,S. Y. Suzuki,S. Y. Suzuki,S. K. Swain,Hiroyuki Tajima,T. Takahashi,F. Takasaki,K. Tamai,N. Tamura,Junichi Tanaka,M. Tanaka,G. N. Taylor,Y. Teramoto,S. Tokuda,Makoto Tomoto,T. Tomura,K. Trabelsi,W. Trischuk,T. Tsuboyama,T. Tsukamoto,S. Uehara,K. Ueno,S. Uno,Y. Ushiroda,G. Varner,Kevin Varvell,C. C. Wang,C. H. Wang,J. G. Wang,M. Z. Wang,Y. Watanabe,E. Won,B. D. Yabsley,Yasuhiko Yamada,A. Yamaguchi,Y. Yamashita,M. Yamauchi,H. Yanai,J. Yashima,Masashi Yokoyama,You-Jin Yuan,Y. Yusa,C. C. Zhang,J. Zhang,Zhenyu Zhang,Y. Zheng,V.N. Zhilich,D. Žontar +203 more
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The first measurement of the branching fraction for the inclusive decay B → X s l + l -, where l is either an electron or a muon, and X s is a hadronic recoil system that contains an s quark, was reported in this article.Abstract:
We report the first measurement of the branching fraction for the inclusive decay B → X s l + l - , where l is either an electron or a muon, and X s is a hadronic recoil system that contains an s quark. We analyzed a data sample of 65.4 x 10 6 B meson pairs collected with the Belle detector at the KEKB e + e - asymmetric-energy collider. We find B(B → X s l + l - ) = [6.1 ′ 1.4(stat) + 1 . 4 - 1 . 1 (syst)] × 10 - 6 for dilepton masses greater than 0.2 GeV/c 2 .read more
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More model-independent analysis of b→s processes
Gudrun Hiller,F. Krüger +1 more
TL;DR: In this paper, the implications of nonstandard scalar and pseudoscalar interactions for the decays of hadronic b decays were studied, and the authors showed that the standard model prediction for these ratios defined with the same cut on the dilepton mass for electron and muon modes, with a much smaller theoretical uncertainty than the one for the individual branching fractions, was shown.
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Physics achievements from the Belle experiment
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References
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Journal ArticleDOI
The Belle detector
TL;DR: The BELLE detector for experiments at KEKB, a high luminosity, energy asymmetric B-factory, is now being constructed at KEK, and an overview of the detector systems and their status is presented.
Journal ArticleDOI
Observables for the Analysis of Event Shapes in e+ e- Annihilation and Other Processes
Geoffrey C. Fox,Stephen Wolfram +1 more
TL;DR: In this article, a set of rotationally invariant observables which characterizes the shapes of events is presented, and is calculable in quantum-chromodynamics perturbation theory for final states consisting of quarks and gluons.
Journal ArticleDOI
Branching fraction and photon energy spectrum for b→sγ
Shuai Chen,J. W. Hinson,J. Lee,D. H. Miller,V. Pavlunin,E. I. Shibata,I. P J Shipsey,Daniel P Cronin-Hennessy,A. L. Lyon,E. H. Thorndike,T. E. Coan,V. Fadeyev,Yang Gao,Y. Maravin,I. Narsky,R. Stroynowski,J. Ye,T. Wlodek,Marina Artuso,K. Benslama,C. Boulahouache,K. Bukin,E. Dambasuren,G. Majumder,R. Mountain,T. Skwarnicki,Sheldon Stone,J. C. Wang,A. Wolf,Sacha E Kopp,M. Kostin,A. H. Mahmood,S. E. Csorna,I. Danko,K. W. McLean,Z. Xu,R. Godang,G. Bonvicini,D. Cinabro,M. Dubrovin,S. McGee,G. J. Zhou,Adolf Bornheim,E. Lipeles,S. P. Pappas,A. Shapiro,Werner Sun,A. J.R. Weinstein,D. E. Jaffe,R. Mahapatra,G. Masek,H. P. Paar,D. M. Asner,A. Eppich,T. S. Hill,R. J. Morrison,T. Ferguson,D. L. Vogel,B. K. Heltsley,L. Hsu,C. D. Jones,J. Kandaswamy,D. L. Kreinick,M. Lohner,A. Magerkurth,T. O. Meyer,N. B. Mistry +66 more
TL;DR: In this paper, the authors measured the branching fraction and photon energy spectrum for the radiative penguin process b-->s gamma, and obtained the first and second moments of the photon spectrum above 2.0 GeV.
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Photonic penguins at two loops and mt-dependence of BR[B→Xsl+l−]
TL;DR: In this paper, two-loop matching conditions for all the operators that are relevant to B → X s l + l − decay in the Standard Model were derived, and they were shown to remove the ±16% uncertainty in the decay spectrum, which was mainly due to the renormalization-scale dependence of the top quark mass.