Search for High-Mass Diphoton States and Limits on Randall-Sundrum Gravitons at CDF

Journal Article · Fri Oct 26 04:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.171801· OSTI ID:21024351

Aaltonen, T; Maki, T; Mehtala, P; Orava, R; Osterberg, K; Saarikko, H; Remortel, N van ^[1]; Abulencia, A; Budd, S; Ciobanu, C I; Errede, D; Errede, S; Gerberich, H; Grundler, U; Junk, T R; Kraus, J; Marino, C P; Pitts, K; Rogers, E; Taffard, A ^[2]

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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. University of Illinois, Urbana, Illinois 61801 (United States)

We have performed a search for new particles which decay to two photons using 1.2 fb{sup -1} of integrated luminosity from pp collisions at {radical}(s)=1.96 TeV collected using the CDF II detector at the Fermilab Tevatron. We find the diphoton mass spectrum to be in agreement with the standard model expectation, and set limits on the cross section times branching ratio for the Randall-Sundrum graviton, as a function of diphoton mass. We subsequently derive lower limits for the graviton mass of 230 GeV/c{sup 2} and 850 GeV/c{sup 2}, at the 95% confidence level, for coupling parameters (k/M{sub Pl}) of 0.01 and 0.1, respectively.

• OSTI ID: 21024351
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 17 Vol. 99; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BEAM LUMINOSITY
BRANCHING RATIO
CROSS SECTIONS
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
GEV RANGE 100-1000
GRAVITONS
MASS
MASS SPECTRA
PARTICLE DECAY
PHOTONS
PROTON-PROTON INTERACTIONS
STANDARD MODEL
TEV RANGE 01-10