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Search for Flavor-Changing-Neutral-Current D Meson Decays
Baringer, Philip S. Bean, Alice Hensel, Carsten Moulik, Tania Wilson, Graham Wallace Abazov, V. M. Abbott, B. Abolins, M. Acharya, B. S. Adams, M.
Baringer, Philip S.
Bean, Alice
Hensel, Carsten
Moulik, Tania
Wilson, Graham Wallace
Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
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Abstract
We study the flavor-changing-neutral-current process c→uμ(+)μ(−) using 1.3 fb(−1) of pp-bar collisions at s√=1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We see clear indications of the charged-current mediated D(+)s and D(+)→ϕπ(+)→μ(+)μ(−)π(+) final states with significance greater than 4 standard deviations above background for the D+ state. We search for the continuum neutral-current decay of D(+)→π(+)μ(+)μ(−) in the dimuon invariant mass spectrum away from the ϕ resonance. We see no evidence of signal above background and set a limit of B(D(+)→π(+)μ(+)μ(−))<3.9×10−6 at the 90% C.L. This limit places the most stringent constraint on new phenomena in the c→uμ(+)μ(−) transition.
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This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.100.101801.
Date
2008-03-14
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American Physical Society
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Citation
V. M. Abazov et al. (D0 Collaboration). (2008). "Search for Flavor-Changing-Neutral-Current D Meson Decays." Physical Review Letters, 100(10):101801. http://dx.doi.org/10.1103/PhysRevLett.100.101801.