We report on a search for the flavor-changing neutral-current decay D0 --> mu+mu- in p anti-p collisions at s**(1/2) = 1.96 TeV using 300 pb-1 of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron collider. A displaced vertex trigger selects long-lived D0 candidates in the mu+ mu-, pi++ pi+-, and K- pi++ decay modes. We use the Cabibbo-flavored D0 --> K- pi++ channel to optimize the selection criteria in an unbiased manner, and the kinematically similar D0 --> pi++ pi+- channel for normalization. We set an upper limit on the branching fraction B(D0 --> mu+mu-) < 2.1 x 10-7 (3.0 x 10-7) at the 90% (95%) confidence level.

T. AALTONEN, B.ALVAREZ GONZALEZV, S. AMERIO, D. AMIDEI, A. ANASTASSOV, A. ANNOVI, et al. (2010). Updated Search for the Flavor-Changing Neutral-Current Decay D0 -> mu+mu-. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82, 091105-1-091105-8 [10.1103/PhysRevD.82.091105].

Updated Search for the Flavor-Changing Neutral-Current Decay D0 -> mu+mu-

CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MARGAROLI, FABRIZIO;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2010

Abstract

We report on a search for the flavor-changing neutral-current decay D0 --> mu+mu- in p anti-p collisions at s**(1/2) = 1.96 TeV using 300 pb-1 of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron collider. A displaced vertex trigger selects long-lived D0 candidates in the mu+ mu-, pi++ pi+-, and K- pi++ decay modes. We use the Cabibbo-flavored D0 --> K- pi++ channel to optimize the selection criteria in an unbiased manner, and the kinematically similar D0 --> pi++ pi+- channel for normalization. We set an upper limit on the branching fraction B(D0 --> mu+mu-) < 2.1 x 10-7 (3.0 x 10-7) at the 90% (95%) confidence level.
2010
T. AALTONEN, B.ALVAREZ GONZALEZV, S. AMERIO, D. AMIDEI, A. ANASTASSOV, A. ANNOVI, et al. (2010). Updated Search for the Flavor-Changing Neutral-Current Decay D0 -> mu+mu-. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82, 091105-1-091105-8 [10.1103/PhysRevD.82.091105].
T. AALTONEN; B.ALVAREZ GONZALEZV; S. AMERIO; D. AMIDEI; A. ANASTASSOV; A. ANNOVI; J. ANTOS; G. APOLLINARI; J.A. APPEL; A. APRESYAN; T. ARISAWA; A. AR...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/98010
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