Search for the decay J/{psi}{yields}{gamma}+invisible

Journal Article · Sat May 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.091101· OSTI ID:21409908

Insler, J; Muramatsu, H; Park, C S; Thorndike, E H; Yang, F ^[1]; Ricciardi, S ^[2]; Thomas, C ^[2]; Artuso, M; Blusk, S; Khalil, S; Mountain, R; Skwarnicki, T; Stone, S; Wang, J C; Zhang, L M ^[3]; Bonvicini, G; Cinabro, D; Lincoln, A; Smith, M J; Zhou, P ^[4]

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1. University of Rochester, Rochester, New York 14627 (United States)
2. STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX (United Kingdom)
3. Syracuse University, Syracuse, New York 13244 (United States)
4. Wayne State University, Detroit, Michigan 48202 (United States)

A search for J/{psi} radiative decay to weakly interacting neutral final states was performed using the CLEO-c detector at the Cornell Electron Storage Ring. J/{psi} events were selected by observing the hadronic decay {psi}(2S){yields}{pi}{sup +{pi}-}J/{psi}. A total of 3.7x10{sup 6} J/{psi} events were used to study the decay J/{psi}{yields}{gamma}+X, where X is a narrow state that is invisible to the detector. No significant signal was observed, and upper limits on the branching fraction were set for masses m{sub X} up to 960 MeV/c{sup 2}. The upper limit corresponding to m{sub X}=0 is 4.3x10{sup -6} at the 90% confidence level.

• OSTI ID: 21409908
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 9; Other Information: DOI: 10.1103/PhysRevD.81.091101; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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