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Angular distributions in the decay B → K^*l^+l^-

Aubert, B. and Bona, M. and Karyotakis, Y. and Lees, J. P. and Poireau, V. and Prudent, X. and Tisserand, V. and Zghiche, A. and Garra-Tico, J. and Grauges, E. and Lopez, L. and Palano, A. and Pappagallo, M. and Eigen, G. and Stugu, B. and Sun, L. and Abrams, G. S. and Battaglia, M. and Brown, D. N. and Button-Shafer, J. and Cahn, R. N. and Jacobsen, R. G. and Kadyk, J. A. and Kerth, L. T. and Kolomensky, Yu. G. and Kukartsev, G. and Lynch, G. and Osipenkov, I. L. and Ronan, M. T. and Tackmann, K. and Tanabe, T. and Wenzel, W. A. and Hawkes, C. M. and Soni, N. and Watson, A. T. and Koch, H. and Schroeder, T. and Walker, D. and Asgeirsson, D. J. and Cuhadar-Donszelmann , T. and Fulsom, B. G. and Hearty, C. and Mattison, T. S. and McKenna, J. A. and Barrett, M. and Khan, A. and Saleem, M. and Teodorescu, L. and Blinov, V. E. and Bukin, A. D. and Buzykaev, A. R. and Druzhinin, V. P. and Golubev, V. B. and Onuchin, A. P. and Serednyakov, S. I. and Skovpen, Yu. I. and Solodov, E. 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D. and Li-Gioi, L. and Mazzoni, M. A. and Morganti, S. and Piredda, G. and Polci, F. and Renga, F. and Voena, C. and Ebert, M. and Hartmann, T. and Schröder, H. and Waldi, R. and Adye, T. and Franek, B. and Olaiya, E. O. and Roethel, W. and Wilson, F. F. and Emery, S. and Escalier, M. and Esteve, L. and Gaidot, A. and Ganzhur, S. F. and Hamel-de-Monchenault, G. and Kozanecki, W. and Vasseur, G. and Yèche, Ch. and Zito, M. and Chen, X. R. and Liu, H. and Park, W. and Purohit, M. V. and White, R. M. and WIlson, J. R. and Allen, M. T. and Aston, D. and Bartoldus, R. and Bechtle, P. and Benitez, J. F. and Cenci, R. and Coleman, J. P. and Convery, M. R. and Dingfelder, J. C. and Dorfan, J. and Dubois-Felsmann, G. P. and Dunwoodie, W. and Field, R. C. and Gowdy, S. J. and Graham, M. T. and Grenier, P. and Hast, C. and Innes, W. R. and Kaminski, J. and Kelsey, M. H. and Kim, H. and Kim, P. and Kocian, M. L. and Leith, D. W. G. S. and Li, S. and Lindquist, B. and Luitz, S. and Luth, V. and Lynch, H. L. and MacFarlane, D. B. and Marsiske, H. and Messner, R. and Muller, D. R. and Neal, H. and Nelson, S. and O’Grady, C. P. and Ofte, I. and Perazzo, A. and Perl, M. and Ratcliff, B. N. and Roodman, A. and Salnikov, A. A. and Schindler, R. H. and Schwiening, J. and Snyder, A. and Su, D. and Sullivan, M. K. and Suzuki, K. and Swain, S. K. and Thompson, J. M. and Va’vra, J. and Wagner, A. P. and Weaver, M. and West, C. A. and Wisniewski, W. J. and Wittgen, M. and Wright, D. M. and Wulsin, H. W. and Yarritu, A. K. and Yi, K. and Young, C. C. and Ziegler, V. and Burchat, P. R. and Edwards, A. J. and Majewski, S. A. and Miyashita, T. S. and Petersen, B. A. and Wilden, L. and Ahmed, S. and Alam, M. S. and Bula, R. and Ernst, J. A. and Pan, B. and Saeed, M. A. and Zain, S. B. and Spanier, S. M. and Wogsland, B. J. and Eckmann, R. and Ritchie, J. L. and Ruland, A. M. and Schilling, C. J. and Schwitters, R. F. and Drummond, B. W. and Izen, J. M. and Lou, X. C. and Yelda, S. and Bianchi, F. and Gamba, D. and Pelliccioni, M. and Bomben, M. and Bosisio, L. and Cartaro, C. and Della-Ricca, G. and Lanceri, L. and Vitale, L. and Azzolini, V. and Lopez-March, N. and Martinez-Vidal, F. and Milanes, D. A. and Oyanguren, A. and Albert, J. and Banerjee, Sw. and Bhuyan, B. and Choi, H. H. F. and Hamano, K. and Kowalewski, R. and Lewczuk, M. J. and Nugent, I. M. and Roney, J. M. and Sobie, R. J. and Gershon, T. J. and Harrison, P. F. and Ilic, J. and Latham, T. E. and Mohanty, G. B. and Band, H. R. and Chen, X. and Dasu, S. and Flood, K. T. and Pan, Y. and Pierini, M. and Prepost, R. and Vuosalo, C. O. and Wu, S. L. (2009) Angular distributions in the decay B → K^*l^+l^-. Physical Review D, 79 (3). Art. 031102. ISSN 0556-2821. http://resolver.caltech.edu/CaltechAUTHORS:20091013-134513643

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Abstract

We use a sample of 384×106 B[overline B] events collected with the BABAR detector at the PEP-II e+e- collider to study angular distributions in the rare decays B-->K*[script-l]+[script-l]-, where [script-l]+[script-l]- is either e+e- or µ+µ-. For low dilepton invariant masses, m[script-l][script-l]<2.5 GeV/c2, we measure a lepton forward-backward asymmetry [script A]FB=0.24-0.23+0.18±0.05 and K* longitudinal polarization FL=0.35±0.16±0.04. For m[script-l][script-l]>3.2 GeV/c2, we measure [script A]FB=0.76-0.32+0.52±0.07 and FL=0.71-0.22+0.20±0.04.


Item Type:Article
Related URLs:
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http://dx.doi.org/10.1103/PhysRevD.79.031102DOIArticle
http://link.aps.org/doi/10.1103/PhysRevD.79.031102 PublisherArticle
Additional Information:© 2009 The American Physical Society. Received 28 April 2008; published 26 February 2009. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain), and STFC (United Kingdom). Individuals have received support from the Marie Curie EIF (European Union) and the A. P. Sloan Foundation.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
Stichting voor Fundamenteel Onderzoek der Materie (FOM)UNSPECIFIED
Norwegian Research CouncilUNSPECIFIED
Ministry of Education and Science of the Russian Federation UNSPECIFIED
Ministerio de Educación y Ciencia (MEC)UNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
Marie Curie FellowshipUNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Issue or Number:3
Classification Code:PACS: 13.20.He
Record Number:CaltechAUTHORS:20091013-134513643
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20091013-134513643
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:16328
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:15 Oct 2009 21:15
Last Modified:23 May 2017 23:59

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