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| Title: | Search for High-Mass Diphoton States and Limits on Randall-Sundrum Gravitons at CDF |
Authors: | Aaltonen, T.; Chuang, S. H. CSIC; Rodrigo, Teresa CSIC ORCID ; Ruiz Jimeno, Alberto ; Cuenca Almenar, Cristóbal CSIC; Gómez, G. CSIC ORCID ; Palencia, Enrique CSIC ORCID; Cuevas, Javier CSIC ORCID; Piedra, Jonatan CSIC ORCID ; Cabrera, Susana CSIC ORCID; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar, Rocío CSIC ORCID; Casal, Bruno CSIC | Keywords: | To-leading Order Electromagnetic Calorimeter Hierarchy |
Issue Date: | 22-Oct-2007 | Publisher: | American Physical Society | Citation: | Physical Review Letters 99(17): 171801 (2007) | Abstract: | We have performed a search for new particles which decay to two photons using 1.2 fb(-1) of integrated luminosity from p(p)over-bar collisions at sqrt{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^2 and 850 GeV/c^2, at the 95% confidence level, for coupling parameters (k/(M)over-bar_Pl) of 0.01 and 0.1, respectively. | Description: | 7 páginas, 4 figuras, 1 tabla.-- PACS nrs.: 13.85.Rm, 11.25.Wx, 13.85.Qk, 14.80.-j.-- CDF Collaboration: et al. | Publisher version (URL): | http://dx.doi.org/10.1103/PhysRevLett.99.171801 | URI: | http://hdl.handle.net/10261/8522 | DOI: | 10.1103/PhysRevLett.99.171801 | ISSN: | 0031-9007 |
| Appears in Collections: | (IFCA) Artículos (IFIC) Artículos |
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| e171801.pdf | 295,24 kB | Adobe PDF |  View/Open |
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