Search for flavor-changing-neutral-current D meson decays
We study the flavor-changing-neutral-current process c {yields} u{mu}{sup +}{mu}{sup -} using 1.3 fb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We see clear indications of the D{sup +}{sub s} and D{sup +} {yields} {phi}{pi}{sup +} {yields} {mu}{sup +}{mu}{sup -}{pi}{sup +} final states with significance greater than four standard deviations above background for the D{sup +} state. We search for the continuum decay of D{sup +} {yields} {pi}{sup +}{mu}{sup +}{mu}{sup -} in the dimuon invariant mass spectrum away from the {phi} resonance. We see no evidence of signal above background and set a limit of B(D{sup +} {yields} {pi}{sup +}{mu}{sup +}{mu}{sup -}) < 3.9 x 10{sup -6} at the 90% CL. This limit places the most stringent constraint on new phenomena in the c {yields} u{mu}{sup +}{mu}{sup -} transition.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 919092
- Report Number(s):
- FERMILAB-PUB-07-423-E; arXiv eprint number arXiv:0708.2094; TRN: US0806308
- Country of Publication:
- United States
- Language:
- English
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