We report on a search for the flavor-changing neutral current decay D(0)-->mu(+)mu(-) in p (p) over bar collisions at roots=1.96 TeV using 65 pb(-1) of data collected by the CDF II experiment at the Fermilab Tevatron Collider. A displaced-track trigger selects long-lived D(0) candidates in the D(0)-->mu(+)mu(-) search channel, the kinematically similar D(0)-->pi(+)pi(-) channel used for normalization, the Cabibbo-favored D(0)-->K(-)pi(+) channel used to optimize the selection criteria in an unbiased manner, and their charge conjugates. Finding no signal events in the D(0)-->mu(+)mu(-) search window, we set an upper limit on the branching fraction B(D(0)-->mu(+)mu(-))less than or equal to2.5x10(-6) (3.3x10(-6)) at the 90% (95%) confidence level. RI Lancaster, Mark/C-1693-2008; Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; Wolter, Marcin/A-7412-2012; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012

Search for the flavor-changing neutral current decay D(0)->mu(+)mu(-) in p(p)over-bar collisions at root s=1.96 TeV

MANCA, GIULIA;OLDEMAN, RUDOLF GERHARD CHRISTIAAN;
2003-01-01

Abstract

We report on a search for the flavor-changing neutral current decay D(0)-->mu(+)mu(-) in p (p) over bar collisions at roots=1.96 TeV using 65 pb(-1) of data collected by the CDF II experiment at the Fermilab Tevatron Collider. A displaced-track trigger selects long-lived D(0) candidates in the D(0)-->mu(+)mu(-) search channel, the kinematically similar D(0)-->pi(+)pi(-) channel used for normalization, the Cabibbo-favored D(0)-->K(-)pi(+) channel used to optimize the selection criteria in an unbiased manner, and their charge conjugates. Finding no signal events in the D(0)-->mu(+)mu(-) search window, we set an upper limit on the branching fraction B(D(0)-->mu(+)mu(-))less than or equal to2.5x10(-6) (3.3x10(-6)) at the 90% (95%) confidence level. RI Lancaster, Mark/C-1693-2008; Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; Wolter, Marcin/A-7412-2012; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/46681
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