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We report on a preliminary measurement of time-dependent CP-violating asymmetries in B0 --> J/psi K0S and B0 --> psi(2S) K0S decays recorded by the BABAR detector at the PEP-II asymmetric B Factory at SLAC. The data sample consisted of 9.0…

High Energy Physics - Experiment · Physics 2010-11-23 Yury G. Kolomensky

We have measured the process B+- --> (K*+- --> K+- pi0) pi0 based on 232 million Y(4S) --> BBbar decays collected with the BaBar detector at the PEP-II asymmetric-energy B Factory at SLAC. From a signal yield of 89 +- 26 events we obtain…

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

With the BaBar detector at the PEP-II asymmetric $B$ Factory at SLAC, we present the first search for the decays $B^0\to\ell^+\ell^-\gamma$ ($l=e, \mu$). Using a data set of 292 $fb^{-1}$ collected at the $\Upsilon(4S)$ resonance, we find…

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

We present a study of the decays B^{+-} --> D K^{+-} with D mesons reconstructed in the K+pi-pi0 or K-pi+pi0 final states, where D indicates a D0 or a anti-D0 meson. Using a sample of 474 million BBbar pairs collected with the BaBar…

High Energy Physics - Experiment · Physics 2011-08-08 The BABAR Collaboration , J. -P. Lees

We present updated measurements of the CP-violating parameters S_pipi and C_pipi in B0 -> pi+pi- decays. Using a sample of 227 million Y(4S) -> BBbar decays collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at…

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

We present improved measurements of the branching fractions and CP asymmetries in the two-body decays B0 --> pi0 pi0, B0 --> K0 pi0 and B0 --> K+ pi- as well as the quasi two-body B0 --> K_1(1270)+ pi- and B0 --> K_1(1400)+ pi- decays.…

High Energy Physics - Experiment · Physics 2008-10-08 Ingrid Ofte

This report describes the present status of the detector design for SuperB. It is one of four separate progress reports that, taken collectively, describe progress made on the SuperB Project since the publication of the SuperB Conceptual…

Instrumentation and Detectors · Physics 2010-07-27 SuperB Collaboration , E. Grauges et al. , Francesco Forti , Blair N. Ratcliff , David Aston

In a sample of 471 million BB events collected with the BABAR detector at the PEP-II e+e- collider we study the rare decays B -> K(*) l+ l-, where l+ l- is either e+e- or mu+mu-. We report results on partial branching fractions and isospin…

High Energy Physics - Experiment · Physics 2013-05-30 The BABAR Collaboration

The SLAC PES, developed in the early 1990s for the SLC, has been in continuous use since 1992, during which time it has undergone numerous upgrades. The upgrades include improved cathodes with their matching laser systems, modified…

Accelerator Physics · Physics 2009-11-07 J. E. Clendenin , A. Brachmann , T. Galetto , D. -A. Luh , T. Maruyama , J. Sodja , J. L. Turner

The data acquisition (DAQ) system of the SND detector successfully operated during four data-taking seasons (2010-2013) at the e+e- collider VEPP-2000. Currently the collider is shut down for planned reconstruction, which is expected to…

Instrumentation and Detectors · Physics 2015-06-19 A. G. Bogdanchikov , V. P. Druzhinin , A. A. Korol , S. V. Koshuba , A. I. Tekutiev , Yu. V. Usov

We present measurements of time-dependent CP-violation asymmetries for the decays B0 to eta'K0. The data sample corresponds to 347 million BBbar pairs produced by e+e- annihilation at the Upsilon(4S) resonance in the PEP-II collider, and…

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

BaBar has measured with unprecedented accuracy the e+e- --> ppbar cross section from the threshold up to Q^2 ~ 20 GeV^2/c^4, finding out an unexpected cross section, with plateaux and negative steps. Evidence for a ratio |G_E/G_M|>1 has…

High Energy Physics - Phenomenology · Physics 2009-08-07 R. Baldini Ferroli

We report a search for B -> J/psi D decays, based on a sample of 124 10^6 BBbar events collected with the BABAR detector at the PEP-II storage ring of the Stanford Linear Accelerator Center. No significant signal is found. We obtain upper…

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

We report a search for the rare decays $B^+ \to D^+ K^0$ and $B^+ \to D^+ K^{*0}$ in an event sample of approximately 465 million $B\bar B$ pairs collected with the BaBar detector at the PEP-II asymmetric-energy $e^+e^-$ collider at SLAC.…

High Energy Physics - Experiment · Physics 2010-12-23 The BABAR Collaboration , P. del Amo Sanchez

We present a preliminary measurement of the time-dependent CP asymmetry in B0 --> K*0 (K_S0 pi0) gamma decays based on 431 x 10^6 Upsilon(4S) --> BBbar decays collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider…

High Energy Physics - Experiment · Physics 2007-08-14 The BABAR Collaboration , B. Aubert

We study the process e+e- -> pi+pi-pi+pi-gamma, with a photon emitted from the initial-state electron or positron, using 454.3 fb^-1 of data collected with the BABAR detector at SLAC, corresponding to approximately 260,000 signal events. We…

High Energy Physics - Experiment · Physics 2013-05-30 J. P. Lees , V. Poireau , V. Tisserand , J. Garra Tico , E. Grauges , M. Martinelli , D. A. Milanes , A. Palano , M. Pappagallo , G. Eigen , B. Stugu , D. N. Brown , L. T. Kerth , Yu. G. Kolomensky , G. Lynch , H. Koch , T. Schroeder , D. J. Asgeirsson , C. Hearty , T. S. Mattison , J. A. McKenna , A. Khan , V. E. Blinov , A. R. Buzykaev , V. P. Druzhinin , V. B. Golubev , E. A. Kravchenko , A. P. Onuchin , S. I. Serednyakov , Yu. I. Skovpen , E. P. Solodov , K. Yu. Todyshev , A. N. Yushkov , M. Bondioli , D. Kirkby , A. J. Lankford , M. Mandelkern , D. P. Stoker , H. Atmacan , J. W. Gary , F. Liu , O. Long , G. M. Vitug , C. Campagnari , T. M. Hong , D. Kovalskyi , J. D. Richman , C. A. West , A. M. Eisner , J. Kroseberg , W. S. Lockman , A. J. Martinez , T. Schalk , B. A. Schumm , A. Seiden , C. H. Cheng , D. A. Doll , B. Echenard , K. T. Flood , D. G. Hitlin , P. Ongmongkolkul , F. C. Porter , A. Y. Rakitin , R. Andreassen , M. S. Dubrovin , Z. Huard , B. T. Meadows , M. D. Sokoloff , L. Sun , P. C. Bloom , W. T. Ford , A. Gaz , M. Nagel , U. Nauenberg , J. G. Smith , S. R. Wagner , R. Ayad , W. H. Toki , B. Spaan , M. J. Kobel , K. R. Schubert , R. Schwierz , D. Bernard , M. Verderi , P. J. Clark , S. Playfer , D. Bettoni , C. Bozzi , R. Calabrese , G. Cibinetto , E. Fioravanti , I. Garzia , E. Luppi , M. Munerato , M. Negrini , L. Piemontese , V. Santoro , R. Baldini-Ferroli , A. Calcaterra , R. de Sangro , G. Finocchiaro , M. Nicolaci , P. Patteri , I. M. Peruzzi , M. Piccolo , M. Rama , A. Zallo , R. Contri , E. Guido , M. Lo Vetere , M. R. Monge , S. Passaggio , C. Patrignani , E. Robutti , B. Bhuyan , V. Prasad , C. L. Lee , M. Morii , A. J. Edwards , A. Adametz , J. Marks , U. Uwer , F. U. Bernlochner , M. Ebert , H. M. Lacker , T. Lueck , P. D. Dauncey , M. Tibbetts , P. K. Behera , U. Mallik , C. Chen , J. Cochran , W. T. Meyer , S. Prell , E. I. Rosenberg , A. E. Rubin , A. V. Gritsan , Z. J. Guo , N. Arnaud , M. Davier , G. Grosdidier , F. Le Diberder , A. M. Lutz , B. Malaescu , P. Roudeau , M. H. Schune , A. Stocchi , G. Wormser , D. J. Lange , D. M. Wright , I. Bingham , C. A. Chavez , J. P. Coleman , J. R. Fry , E. Gabathuler , D. E. Hutchcroft , D. J. Payne , C. Touramanis , A. J. Bevan , F. Di Lodovico , R. Sacco , M. Sigamani , G. Cowan , D. N. Brown , C. L. Davis , A. G. Denig , M. Fritsch , W. Gradl , A. Hafner , E. Prencipe , K. E. Alwyn , D. Bailey , R. J. Barlow , G. Jackson , G. D. Lafferty , E. Behn , R. Cenci , B. Hamilton , A. Jawahery , D. A. Roberts , G. Simi , C. Dallapiccola , R. Cowan , D. Dujmic , G. Sciolla , D. Lindemann , P. M. Patel , S. H. Robertson , M. Schram , P. Biassoni , A. Lazzaro , V. Lombardo , N. Neri , F. Palombo , S. Stracka , L. Cremaldi , R. Godang , R. Kroeger , P. Sonnek , D. J. Summers , X. Nguyen , P. Taras , G. De Nardo , D. Monorchio , G. Onorato , C. Sciacca , G. Raven , H. L. Snoek , C. P. Jessop , K. J. Knoepfel , J. M. LoSecco , W. F. Wang , K. Honscheid , R. Kass , J. Brau , R. Frey , N. B. Sinev , D. Strom , E. Torrence , E. Feltresi , N. Gagliardi , M. Margoni , M. Morandin , M. Posocco , M. Rotondo , F. Simonetto , R. Stroili , S. Akar , E. Ben-Haim , M. Bomben , G. R. Bonneaud , H. Briand , G. Calderini , J. Chauveau , O. Hamon , Ph. Leruste , G. Marchiori , J. Ocariz , S. Sitt , M. Biasini , E. Manoni , S. Pacetti , A. Rossi , C. Angelini , G. Batignani , S. Bettarini , M. Carpinelli , G. Casarosa , A. Cervelli , F. Forti , M. A. Giorgi , A. Lusiani , B. Oberhof , E. Paoloni , A. Perez , G. Rizzo , J. J. Walsh , D. Lopes Pegna , C. Lu , J. Olsen , A. J. S. Smith , A. V. Telnov , F. Anulli , G. Cavoto , R. Faccini , F. Ferrarotto , F. Ferroni , M. Gaspero , L. Li Gioi , M. A. Mazzoni , G. Piredda , C. Bünger , O. Grünberg , T. Hartmann , T. Leddig , H. Schröder , R. Waldi , T. Adye , E. O. Olaiya , F. F. Wilson , S. Emery , G. Hamel de Monchenault , G. Vasseur , Ch. Y\` , D. Aston , D. J. Bard , R. Bartoldus , C. Cartaro , M. R. Convery , J. Dorfan , G. P. Dubois-Felsmann , W. Dunwoodie , R. C. Field , M. Franco Sevilla , B. G. Fulsom , A. M. Gabareen , M. T. Graham , P. Grenier , C. Hast , W. R. Innes , M. H. Kelsey , H. Kim , P. Kim , M. L. Kocian , D. W. G. S. Leith , P. Lewis , S. Li , B. Lindquist , S. Luitz , V. Luth , H. L. Lynch , D. B. MacFarlane , D. R. Muller , H. Neal , S. Nelson , I. Ofte , M. Perl , T. Pulliam , B. N. Ratcliff , A. Roodman , A. A. Salnikov , R. H. Schindler , A. Snyder , D. Su , M. K. Sullivan , J. Va'vra , A. P. Wagner , M. Weaver , W. J. Wisniewski , M. Wittgen , D. H. Wright , H. W. Wulsin , A. K. Yarritu , C. C. Young , V. Ziegler , W. Park , M. V. Purohit , R. M. White , J. R. Wilson , A. Randle-Conde , S. J. Sekula , M. Bellis , J. F. Benitez , P. R. Burchat , T. S. Miyashita , M. S. Alam , J. A. Ernst , R. Gorodeisky , N. Guttman , D. R. Peimer , A. Soffer , P. Lund , S. M. Spanier , R. Eckmann , J. L. Ritchie , A. M. Ruland , C. J. Schilling , R. F. Schwitters , B. C. Wray , J. M. Izen , X. C. Lou , F. Bianchi , D. Gamba , L. Lanceri , L. Vitale , F. Martinez-Vidal , A. Oyanguren , H. Ahmed , J. Albert , Sw. Banerjee , H. H. F. Choi , G. J. King , R. Kowalewski , M. J. Lewczuk , I. M. Nugent , J. M. Roney , R. J. Sobie , N. Tasneem , T. J. Gershon , P. F. Harrison , T. E. Latham , E. M. T. Puccio , H. R. Band , S. Dasu , Y. Pan , R. Prepost , S. L. Wu

A preliminary measurement of the branching fraction B(tau- --> K0 pi- nu) is made using 384.6 fb-1 of e+e- collision data provided by the PEP-II collider, operating primarily at sqrt(s)=10.58 GeV, and recorded using the BaBar detector. From…

High Energy Physics - Experiment · Physics 2010-04-12 B. Aubert

Using 342$fb^{-1}$ of $e^{+}e^{-}$ annihilation data collected with the BABAR detector at the SLAC PEP-II electron-positron asymmetric energy collider operating at a center-of-mass energies near 10.58GeV, we present the preliminary…

High Energy Physics - Experiment · Physics 2015-06-12 Ian M. Nugent

A method of measuring e+e- annihilation cross sections at low energy sqrt{s}< 5 GeV, using initial-state radiation, is described. Experimental data from the PEP-II B-factory at 10.6 GeV center-of-mass energy, obtained via ISR, are…

High Energy Physics - Experiment · Physics 2009-11-03 S. I. Serednyakov

The process e+e- --> pi+ pi- pi0 gamma has been studied at a center-of-mass energy near the Y(4S) resonance using a 89.3 fb-1 data sample collected with the BaBar detector at the PEP-II collider. From the measured 3pi mass spectrum we have…

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