Journal
PHYSICAL REVIEW D
Volume 82, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.82.091105
Keywords
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Funding
- STFC [ST/H001069/1, ST/H001026/1, ST/H001077/1, ST/H001034/1, ST/H001026/2] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H001026/1, ST/H001026/2, ST/H001034/1, PP/E000444/1, ST/H001077/1, ST/H001069/1] Funding Source: researchfish
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We report on a search for the flavor-changing neutral-current decay D-0 -> mu(+)mu(-) in p (p) over bar collisions at root s = 1.96 TeV using 360 pb(-1) of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron collider. A displaced vertex trigger selects long-lived D-0 candidates in the mu(+)mu(-), pi(+)pi(-), and K-pi(+) decay modes. We use the Cabibbo-favored D-0 -> K-pi(+) channel to optimize the selection criteria in an unbiased manner, and the kinematically similar D-0 -> pi(+)pi(-) channel for normalization. We set an upper limit on the branching fraction B(D-0 -> mu(+)mu(-)) < 2.1 X 10(-7) (3.0 X 10(-7)) at the 90% (95%) confidence level.
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