Observation of B{sub s}{sup 0}{yields}J/{psi}K{sup *}(892){sup 0} and B{sub s}{sup 0}{yields}J/{psi}K{sub S}{sup 0} decays

Journal Article · Tue Mar 01 00:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.052012· OSTI ID:21578165

Aaltonen, T; Brucken, E; Devoto, F; Mehtala, P; Orava, R ^[1]; Alvarez Gonzalez, B; Casal, B; Cuevas, J; Gomez, G; Palencia, E; Rodrigo, T; Ruiz, A; Scodellaro, L; Vila, I; Vilar, R; Vizan, J ^[2]; Amerio, S; Dorigo, T; Gresele, A; Lazzizzera, I ^[3]

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1. Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
2. Instituto de Fisica de Cantabria, CSIC, University of Cantabria, 39005 Santander (Spain)
3. Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova (Italy)

We report the first observation of two Cabibbo-suppressed decay modes of the B{sub s}{sup 0} meson. Using a sample of pp collisions at {radical}(s)=1.96 TeV corresponding to 5.9 fb{sup -1} of integrated luminosity collected with the CDF II, the collider detector at the Fermilab Tevatron, we search for new B{sub s}{sup 0} decay modes in a sample of events containing J/{psi}{yields}{mu}{sup +}{mu}{sup -} decays. We reconstruct a B{sub s}{sup 0}{yields}J/{psi}K{sup *}(892){sup 0} signal with K{sup *}(892){sup 0}{yields}K{sup +}{pi}{sup -}, observing a yield of 151{+-}25 events with a statistical significance of 8.0{sigma}. We also reconstruct a B{sub s}{sup 0}{yields}J/{psi}K{sub S}{sup 0} signal with K{sub S}{sup 0}{yields}{pi}{sup +}{pi}{sup -}, observing a yield of 64{+-}14 events with a statistical significance of 7.2{sigma}. From these yields, we extract the branching ratios B(B{sub s}{sup 0}{yields}J/{psi}K{sup *}(892){sup 0})=(8.3{+-}3.8)x10{sup -5} and B(B{sub s}{sup 0}{yields}J/{psi}K{sup 0})=(3.5{+-}0.8)x10{sup -5}, where statistical, systematic, and fragmentation-fraction uncertainties are included in the combined uncertainty.

• OSTI ID: 21578165
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevD.83.052012; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
FRAGMENTATION
K*-892 MESONS
LUMINOSITY
MUONS MINUS
PARTICLE DECAY
PIONS MINUS
PROTON-PROTON INTERACTIONS
SIGNALS
TEV RANGE 01-10
YIELDS
ACCELERATORS
BARYON-BARYON INTERACTIONS
BOSONS
CYCLIC ACCELERATORS
DECAY
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
LEPTONS
MEASURING INSTRUMENTS
MESONS
MUONS
NUCLEON-NUCLEON INTERACTIONS
OPTICAL PROPERTIES
PARTICLE INTERACTIONS
PHYSICAL PROPERTIES
PIONS
PROTON-NUCLEON INTERACTIONS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
STRANGE MESONS
STRANGE PARTICLES
SYNCHROTRONS
TEV RANGE
VECTOR MESONS