Search for Invisible Decays of the UPSILON(1S)

Journal Article · Fri Dec 18 04:00:00 EST 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.103.251801· OSTI ID:21370907

Aubert, B; Karyotakis, Y; Lees, J P; Poireau, V; Prencipe, E; Prudent, X; Tisserand, V ^[1]; Tico, J Garra; Grauges, E ^[2]; Martinelli, M; Palano, A; Pappagallo, M ^[3]; Eigen, G; Stugu, B; Sun, L ^[4]; Battaglia, M; Brown, D N; Hooberman, B; Kerth, L T; Kolomensky, Yu G ^[5]

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1. Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), Universite de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux (France)
2. Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona (Spain)
3. INFN Sezione di Bari, I-70126 Bari (Italy)
4. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
5. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)

We search for invisible decays of the UPSILON(1S) meson using a sample of 91.4x10{sup 6} UPSILON(3S) mesons collected at the BABAR/PEP-II B factory. We select events containing the decay UPSILON(3S)->pi{sup +}pi{sup -}UPSILON(1S) and search for evidence of an undetectable UPSILON(1S) decay recoiling against the dipion system. We set an upper limit on the branching fraction B(UPSILON(1S)->invisible)<3.0x10{sup -4} at the 90% confidence level.

• OSTI ID: 21370907
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 103; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BOSONS
BRANCHING RATIO
DECAY
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
HADRONS
INTERACTIONS
MESON FACTORIES
MESONS
PAIR PRODUCTION
PARTICLE DECAY
PARTICLE PRODUCTION
PIONS
PIONS MINUS
PIONS PLUS
PSEUDOSCALAR MESONS