Observation of B{sub s} Production at the {upsilon}(5S) Resonance

Journal Article · Fri Jan 20 04:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.96.022002· OSTI ID:20775035

Bonvicini, G; Cinabro, D; Dubrovin, M; Lincoln, A ^[1]; Bornheim, A; Pappas, S P; Weinstein, A ^[2]; Asner, D M; Edwards, K W ^[3]; Briere, R A; Chen, G P; Chen, J; Ferguson, T; Tatishvili, G; Vogel, H; Watkins, M E ^[4]; Rosner, J L ^[5]; Adam, N E; Alexander, J P; Berkelman, K ^[6]

---

1. Wayne State University, Detroit, Michigan 48202 (United States)
2. California Institute of Technology, Pasadena, California 91125 (United States)
3. Carleton University, Ottawa, Ontario, K1S 5B6 (Canada)
4. Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States)
5. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)
6. Cornell University, Ithaca, New York 14853 (United States)

Using the CLEO detector at the Cornell Electron Storage Ring, we have observed the B{sub s} meson in e{sup +}e{sup -} annihilation at the {upsilon}(5S) resonance. We find 14 candidates consistent with B{sub s} decays into final states with a J/{psi} or a D{sub s}{sup (*)-}. The probability that we have observed a background fluctuation is less than 8x10{sup -10}. We have established that at the energy of the {upsilon}(5S) resonance B{sub s} production proceeds predominantly through the creation of B{sub s}*B{sub s}* pairs. We find {sigma}(e{sup +}e{sup -}{yields}B{sub s}*B{sub s}*)=[0.11{sub -0.03}{sup +0.04}(stat){+-}0.02(syst)] nb, and set the following limits: {sigma}(e{sup +}e{sup -}{yields}B{sub s}B{sub s})/{sigma}(e{sup +}e{sup -}{yields}B{sub s}*B{sub s}*)<0.16 and [{sigma}(e{sup +}e{sup -}{yields}B{sub s}B{sub s}*)+{sigma}(e{sup +}e{sup -}{yields}B{sub s}*B{sub s})]/{sigma}(e{sup +}e{sup -}{yields}B{sub s}*= B{sub s}*)<0.16 (90% C.L.). The mass of the B{sub s}* meson is measured to be M{sub B{sub s}}{sub *}=[5.414{+-}0.001(stat){+-}0.003(syst)] GeV/c{sup 2}.

• OSTI ID: 20775035
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 2 Vol. 96; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
B MESONS
CESR STORAGE RING
ELECTRON-POSITRON INTERACTIONS
ELECTRONS
ELECTROPRODUCTION
HADRONIC PARTICLE DECAY
J PSI-3097 MESONS
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
POSITRONS
PROBABILITY