Search for narrow resonances below the Upsilon mesons

Journal Article · Fri Jul 01 00:00:00 EDT 2005 · Physical Review, D (Particles Fields)

DOI:https://doi.org/10.1103/PhysRevD.72.092003· OSTI ID:15020178

Apollinari, G; Barone, M; Carithers, W; Dell'Orso, M; Dorigo, T; Fiori, I; Franklin, M; Giannetti, P; Giromini, P; Happacher, F; Miscetti, S; Parri, A; Ptohos, F; Velev, G

The authors have investigated the invariant mass spectrum of dimuons collected by the CDF experiment during the 1992-1995 run of the Fermilab Tevatron collider to improve the limit on the existence of narrow resonances set by the experiments at the SPEAR e{sup +}e{sup -} collider. In the mass range 6.3-9.0 GeV/c{sup 2} they derive an average 90% upper credible limit of 8 eV to the leptonic width of possible resonances. This limit is much worse at the mass of 7.2 GeV/c{sup 2} due to an excess of 250 {+-} 61 events with a width consistent with the detector resolution.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 15020178
• Report Number(s): FERMILAB-PUB-05-272-E; PRVDAQ; arXiv eprint number hep-ex/0507044; TRN: US0602511
• Journal Information: Physical Review, D (Particles Fields), Vol. 72; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
MESONS
RESOLUTION
SPEAR
Experiment-HEP