4,438 research outputs found

    Charm Decays and Spectroscopy at BABAR

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    We present searches for rare charm decays of the form Xc+→h±ℓ∓ℓ(′)+X_c^+ \to h^{\pm} \ell^{\mp} \ell^{(')^+}, where Xc+X_c^+ is a charm hadron either D+D^+, Ds+D_s^+, or Λc+\Lambda_c^+, and ℓ(′)±\ell^{(')^{\pm}} is an electron or muon. These modes are based on 384 fb−1fb^{-1} of e+e−e^+ e^- annihilation data collected at the Υ(4S)\Upsilon(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. We also present the flavor-changing neutral-current decays D0→e+e−D^0 \to e^+e^-, D0→μ+μ−D^0 \to \mu^+ \mu^-, and D0→e±μ∓D^0 \to e^{\pm} \mu^{\mp} that corresponds to an integrated luminosity of 468 fb−1fb^{-1} of data. The decay D0→e+μ−D^0 \to e^+ \mu^- is further lepton-flavor violating, and thus occur only through very slow neutrino mixing. These decays constitute sensitive probes for possible new-physics contribution. We report new limits on the branching fractions of these decays.Comment: Contributed to the Proceedings of 36th International Conference on High Energy Physics, July 4-11, 2012, Melbourne, Australia. This work was supported by the U.S. Department of Energy under grant No. DE-FG02-96ER-4097

    Hot Topics From BABAR Experiment

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    We search for a new light non-Standard Model CP-odd Higgs boson, A0A^0, decaying to τ+τ−\tau^+\tau^-, μ+μ−\mu^+\mu^-, and invisible in radiative decays of the Υ(2S)\Upsilon(2S) and Υ(3S)\Upsilon(3S). We search for the light scalar particle produced in single-photon decays of the Υ(3S)\Upsilon(3S) resonance through the process Υ(3S)→γA0,A0→\Upsilon(3S) \to \gamma A^0, A^0 \to invisible. We also search for evidence of an undetectable Υ(1S)\Upsilon(1S) decay recoiling against the dipion system. The data samples contain 99×106Υ(2S)99 \times 10^6 \Upsilon(2S) and 122×106Υ(3S)122 \times 10^6 \Upsilon(3S) decays collected by the \babar\ detector at the SLAC PEP-II BB factory.Comment: Contributed to the Proceedings of 16th International Seminar on High Energy Physics QUARKS-2010, Kolomna, Russia, 6-12 June, 201

    Garmon v. Google

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    President\u27s Column

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    This is the Spring, 2012 edition of the ALHeLa newsletter - Synapse. Contents include: President\u27s Column Alabama Health Libraries Association Executive Committee 2012 Executive Committee Meeting Minutes News from the Lister Hill Library News from the Baugh Biomedical Library Health InfoNet Survey of Public Librarian

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    This is the November, 1980 edition of the ALHeLa newsletter - Synapse. Contents include: Why Synapse? Introducing AlHeLA... Steering committee meeting People in the News AlHeLA Steering Committee Members Programs for upcoming meetings AlHeLA Goals and Objectives Membership Applicatio

    First Flights: 100 Years of Powered Flight

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    Bibliography and photographs of a display of government documents from the University of South Alabama.https://cornerstone.lib.mnsu.edu/lib-services-govdoc-display-aeronautics/1002/thumbnail.jp

    Space: the Final Frontier

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    Bibliography and photograph of a display of government documents from the University of South Alabama.https://cornerstone.lib.mnsu.edu/lib-services-govdoc-display-space/1006/thumbnail.jp

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    This is the September, 1988 edition of the ALHeLa newsletter - Synapse. Contents include: President\u27s Column by Lisa Raines Russell (President, ALHeLA 1988) Calendar of events ALHeLA executive council meeting minutes - September 9, 1988 ABULS update by Maureen Battistella Alabama Telefacsimile Network Develops by Maureen Battistella Badware by Mari J. Stoddard MLA exchange committee by Maureen Battistella Video service

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    This is the September, 1983 edition of the ALHeLa newsletter - Synapse. Contents include: President\u27s column by Mary Ann Donnell (AlHeLA President) Calendar of events Editors Corner ALHELA news Nominating committee appointed Librarian to the rescue ! Impressions - MLA / Houston Comparison of On-Line services AIDS Hotline In-house Journals Union Lis

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    This is the Spring, 1998 edition of the ALHeLa newsletter - Synapse. Contents include: President\u27s Column ALHeLA 1998 Annual meeting Attention Students! (1998 Grant Information) News from Alabama University of South Alabama biomedical library Alabama Health Libraries Association 1998 Executive Committee Alabama Health Libraries Association Executive Committee Meetin
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