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Open AccessJournal ArticleDOI

Search for Signatures of Extra Dimensions in the Diphoton Mass Spectrum at the Large Hadron Collider

S. Chatrchyan, +2290 more
- 12 Mar 2012 - 
- Vol. 108, Iss: 11, pp 111801
TLDR
A search for signatures of extra spatial dimensions in the diphoton invariant-mass spectrum has been performed with the CMS detector at the LHC, and lower limits are set on the effective Planck scale in the range of 2.3-3.8 TeV at the 95% confidence level.
Abstract: 
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 √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.

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Citations
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Journal ArticleDOI

Combined measurements of Higgs boson couplings in proton–proton collisions at √s=13Te

Albert M. Sirunyan, +2268 more
- 20 May 2019 - 
TL;DR: Combined measurements of the production and decay rates of the Higgs boson, as well as its couplings to vector bosons and fermions, are presented and constraints are placed on various two Higgs doublet models.
Journal ArticleDOI

Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at √s = 8 TeV

Vardan Khachatryan, +2207 more
- 09 Feb 2015 - 
TL;DR: In this paper, the performance of the Cern LHC detector for photon reconstruction and identification in proton-proton collisions at a centre-of-mass energy of 8 TeV at the CERN LHC is described.
Journal ArticleDOI

Search for scalar diphoton resonances in the mass range 65–600 GeV with the ATLAS detector in pp collision data at √ s =8 TeV

Georges Aad, +49 more
- 20 Oct 2014 - 
TL;DR: A search for scalar particles decaying via narrow resonances into two photons in the mass range 65-600 GeV is performed using 20.3 fb(-1) of √s 8 TeV pp collision data collected with the ATLAS detector at the Large Hadron Collider.
Journal ArticleDOI

Search for new phenomena in high-mass diphoton final states using 37 fb-1 of proton-proton collisions collected at √s = 13 TeV with the ATLAS detector

Morad Aaboud, +11 more
- 10 Dec 2017 - 
TL;DR: Searches for new phenomena in high-mass diphoton final states with the ATLAS experiment at the LHC are presented in this article.The analysis is based on pp collision data corresponding to an integrated luminosit...
Journal ArticleDOI

Search for diphoton resonances in the mass range from 150 to 850 GeV in pp collisions at $s =$ 8 TeV

Vardan Khachatryan, +2322 more
- 07 Jun 2015 - 
TL;DR: In this paper, a 19.7 inverse femtobarn sample of proton-proton collisions at 8 TeV was collected with the CMS detector at the CERN LHC.
References
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Journal ArticleDOI

Large Mass Hierarchy from a Small Extra Dimension

Lisa Randall, +2 more
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TL;DR: In this paper, the weak scale is generated from the Planck scale through an exponential hierarchy, but this exponential arises not from gauge interactions but from the background metric, which is a slice of spacetime.
Journal ArticleDOI

The Hierarchy problem and new dimensions at a millimeter

Nima Arkani-Hamed, +2 more
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TL;DR: In this paper, the authors propose a new framework for solving the hierarchy problem which does not rely on either supersymmetry or technicolor, and they take as the only fundamental short distance scale in nature.
Journal ArticleDOI

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S. Chatrchyan, +3175 more
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TL;DR: The Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC) at CERN as mentioned in this paper was designed to study proton-proton (and lead-lead) collisions at a centre-of-mass energy of 14 TeV (5.5 TeV nucleon-nucleon) and at luminosities up to 10(34)cm(-2)s(-1)
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Presentation of search results: the CLs technique

Alexander Lincoln Read
- 17 Sep 2002 - 
TL;DR: In this paper, the authors describe a framework for the presentation of search results which is motivated by frequentist statistics, and argue that the so-called CLs technique for setting limits is appropriate for determining exclusion intervals while the determination of confidence intervals advocated by Feldman and Cousins' method is more appropriate for treating established signals, i.e. going beyond discovery to measurement.
Journal ArticleDOI

Phenomenology, astrophysics and cosmology of theories with submillimeter dimensions and TeV scale quantum gravity

Nima Arkani-Hamed, +2 more
- 23 Mar 1999 - 
TL;DR: In this paper, the authors proposed a solution to the hierarchy problem not relying on low-energy supersymmetry or technicolor, instead, the problem is nullified by bringing quantum gravity down to the TeV scale.
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