Search for Large Extra Dimensions with Diphoton Events at CDF [i.e. Collider Detector at Fermilab] PDF Download
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Author: Simona Murgia
Publisher:
ISBN:
Category : Grand unified theories (Nuclear physics)
Languages : en
Pages : 340
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![Search for Large Extra Dimensions with Diphoton Events at CDF [i.e. Collider Detector at Fermilab] PDF](https://books.google.com/books/content/images/frontcover/jv0DnpuHocYC?fife=w80-h100)
Author: Simona Murgia
Publisher:
ISBN:
Category : Grand unified theories (Nuclear physics)
Languages : en
Pages : 340
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Author:
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ISBN:
Category :
Languages : en
Pages : 26
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A search for large extra spatial dimensions via virtual-graviton exchange in the diphoton channel has been carried out with the CMS detector at the LHC. No excess of events above the standard model expectations is found using a data sample collected in proton-proton collisions at sqrt(s) = 7 TeV and corresponding to an integrated luminosity of 36 inverse picobarns. New lower limits on the effective Planck scale in the range of 1.6-2.3 TeV at the 95% confidence level are set, providing the most restrictive bounds to date on models with more than two large extra dimensions.
Author: Baharak Fatholahzadeh
Publisher:
ISBN: 9780494934395
Category :
Languages : en
Pages :
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Author: Steven M Kaplan
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ISBN:
Category :
Languages : en
Pages : 119
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A search for large extra dimensions in the diphoton final state using the interpretation of the ADD model is presented. The analysis is performed using 35.9fbinv of data from proton-proton collisions during Run II of the Large Hadron Collider that was recorded by the Compact Muon Solenoid detector in the year 2016. The center of mass energy of the proton-proton system was 13TeV. Events from both data and the Standard Model diphoton background monte-carlo simulation are selected by a cut-based photon identification that has been tuned for photons with high transverse momentum. The simulated Standard Model diphoton events are corrected to NNLO precision by a k-factor calculated by MCFM. The contribution from events with one or two jets misidentified as photons is derived by a data-driven method. The observed data are consistent with the Standard Model. Limits on the ultraviolet cutoff parameter of the ADD model of large extra dimensions MS are calculated as a function of the number of extra dimensions n in the GRW, HLZ, and Hewett conventions for the dependence of the total cross section on MS. In the GRW convention, we observe a 95\% lower limit on MS of 7.6TeV.
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Category :
Languages : en
Pages :
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A search for signatures of extra 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.
Author:
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Category :
Languages : en
Pages : 7
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The authors present the results of searches for large extra dimensions in samples of events with large missing transverse energy E{sub T} and either a photon or a jet produced in p{bar p} collisions at √s = 1.96 TeV collected with the CDF II detector. For [gamma] + E{sub T} and jet + E{sub T} candidate samples corresponding to 2.0 fb−1 and 1.1 fb−1 of integrated luminosity respectively, they observe good agreement with standard model expectations and obtain a combined lower limit on the fundamental parameter of the large extra dimensions model, M{sub D}, as a function of the number of extra dimensions in the model.
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Category :
Languages : en
Pages : 7
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The authors present the results of searches for large extra dimensions in samples of events with large missing transverse energy E{sub T} and either a photon or a jet produced in p{bar p} collisions at √s = 1.96 TeV collected with the CDF II detector. For? + E{sub T} and jet + E{sub T} candidate samples corresponding to 2.0 fb−1 and 1.1 fb−1 of integrated luminosity respectively, they observe good agreement with standard model expectations and obtain a combined lower limit on the fundamental parameter of the large extra dimensions model, M{sub D}, as a function of the number of extra dimensions in the model.
Author: Mark Stephen Cooke
Publisher:
ISBN:
Category :
Languages : en
Pages : 290
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Author:
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Category :
Languages : en
Pages :
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This paper summarizes results of recent searches for new phenomena with the CDF and D0 detectors at the Fermilab Tevatron. All results shown correspond to analysis from the past Run I data corresponding to a total integrated luminosity of (approximately) 100 pb−1 per experiment. In particular, the authors show new results from stop quark searches, neutral supersymmetric Higgs boson searches, a reinterpretation of the CDF second and third generation leptoquark searches in terms of leptoquark resonant production through technicolor interactions and, finally, they report a new D0 search for large extra space dimensions from high mass Drell-Yan dielectron and diphoton events.
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Category :
Languages : en
Pages : 20
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