Artigo
Search for Signatures of Extra Dimensions in the Diphoton Mass Spectrum at the Large Hadron Collider
Fecha
2012-03-12Registro en:
Physical Review Letters. College Pk: Amer Physical Soc, v. 108, n. 11, p. 16, 2012.
0031-9007
10.1103/PhysRevLett.108.111801
WOS:000301345000006
WOS000301345000006.pdf
Autor
Yerevan Phys Inst
Inst Hochenergiephys OeAW
Natl Ctr Particle & High Energy Phys
Univ Antwerp
Vrije Univ Brussel
Univ Libre Brussels
Univ Ghent
Catholic Univ Louvain
Univ Mons
Centro Brasileiro de Pesquisas Físicas (CBPF)
Univ Estado Rio de Janeiro
Lawrence Livermore Natl Lab
University of Maryland
MIT
Univ Minnesota
University of Mississippi
Univ Nebraska
SUNY Buffalo
Universidad de los Andes
Northeastern University
Eotvos Lorand Univ
Univ Padua
Northwestern University (NU)
Univ Notre Dame
Ohio State Univ
Princeton University
Univ Puerto Rico
Purdue Univ
Purdue University Calumet
Rice University
University of Rochester
Tech Univ Split
Univ Trento Trento
Rudjer Boskovic Inst
Rockefeller Univ
Rutgers State Univ
Univ Tennessee
Texas A&M Univ
Texas Tech Univ
Vanderbilt Univ
University of Virginia (UVA)
Wayne State Univ
Univ Wisconsin
Ist Nazl Fis Nucl
Universidade Federal do ABC (UFABC)
Soltan Inst Nucl Studies
Univ Split
Suez Canal Univ
Visva Bharati Univ
Sharif Univ Technol
Isfahan Univ Technol
Shiraz Univ
Islamic Azad Univ
Univ Rome
Univ Pavia
Univ Basilicata
Univ Siena
Lab Instrumentacao & Fis Expt Particulas
Univ Cyprus
Gaziosmanpasa Univ
Adiyaman Univ
Univ Iowa
Mersin Univ
Kafkas Univ
Suleyman Demirel Univ
Ege Univ
Univ Southampton
Univ Perugia
Joint Inst Nucl Res
Utah Valley Univ
Charles Univ Prague
Los Alamos Natl Lab
Erzincan Univ
Acad Sci Res & Technol Arab Republ Egypt
NICPB
Univ Helsinki
Helsinki Inst Phys
Lappeenranta Univ Technol
CNRS
Petersburg Nucl Phys Inst
CEA Saclay
Ecole Polytech
Univ Haute Alsace Mulhouse
IN2P3
Univ Lyon 1
Tbilisi State Univ
RWTH Aachen University
DESY
Russian Acad Sci
Univ Hamburg
Univ Karlsruhe
Univ Pisa
Inst Nucl Phys Demokritos
Univ Athens
Univ Ioannina
KFKI Res Inst Particle & Nucl Phys
Inst Nucl Res ATOMKI
Univ Debrecen
Panjab Univ
University of Delhi
Institute for Theoretical and Experimental Physics (ITEP)
Saha Inst Nucl Phys
Scuola Normale Super Pisa
Bhabha Atom Res Ctr
Tata Inst Fundamental Res EHEP
Tata Inst Fundamental Res HECR
Inst Res & Fundamental Sci IPM
Univ Bari
Politecn Bari
Univ Bologna
Moscow MV Lomonosov State Univ
Inst High Energy Phys
Univ Catania
Univ Florence
Univ Milano Bicocca
Univ Naples Federico II
Cairo Univ
PN Lebedev Phys Inst
Univ Roma La Sapienza
Univ Turin
Univ Piemonte Orientale Novara
Univ Trieste
Kangwon Natl Univ
Kyungpook Natl Univ
Chonnam Natl Univ
Konkuk Univ
British Univ
University of Belgrade
Korea University
Univ Seoul
Sungkyunkwan Univ
Vilnius Univ
IPN
Univ Iberoamer
Benemerita Univ Autonoma Puebla
Univ Autonoma San Luis Potosi
Univ Auckland
Fayoum Univ
Univ Canterbury
Universidade Estadual Paulista (Unesp)
Quaid I Azam Univ
Univ Warsaw
Vinca Inst Nucl Sci
CIEMAT
Univ Autonoma Madrid
Univ Oviedo
Univ Cantabria
CERN
Ain Shams Univ
Paul Scherrer Inst
Swiss Fed Inst Technol
Univ Zurich
Natl Cent Univ
Bulgarian Acad Sci
Natl Taiwan Univ
Cukurova Univ
Middle E Tech Univ
Bogazici Univ
Kharkov Inst Phys & Technol
Univ Bristol
Rutherford Appleton Lab
Univ London Imperial Coll Sci Technol & Med
Brunel Univ
Baylor Univ
Univ Sofia
Univ Alabama
Boston University
Brown University
Univ Calif Davis
Univ Haute Alsace
Univ Calif Los Angeles
University of California, Riverside (UCR)
Univ Calif San Diego
Univ Calif Santa Barbara
CALTECH
Carnegie Mellon Univ
Univ Colorado
Cornell Univ
Fairfield Univ
Fermilab Natl Accelerator Lab
Univ Florida
Florida Int Univ
Florida State University
Florida Inst Technol
Univ Illinois
Peking Univ
Johns Hopkins Univ
University of Kansas (KU)
Brandenburg Tech Univ Cottbus
Kansas State University
Resumen
A search for signatures of extra spatial dimensions in the diphoton invariant-mass spectrum has been performed with the CMS detector at the LHC. No excess of events above the standard model expectation is observed using a data sample collected in proton-proton collisions at root s = 7 TeV corresponding to an integrated luminosity of 2: 2 fb(-1). In the context of the large-extra-dimensions model, lower limits are set on the effective Planck scale in the range of 2.3-3.8 TeV at the 95% confidence level. These limits are the most restrictive bounds on virtual-graviton exchange to date. The most restrictive lower limits to date are also set on the mass of the first graviton excitation in the Randall-Sundrum model in the range of 0.86-1.84 TeV, for values of the associated coupling parameter between 0.01 and 0.10.