Download or read book A Search for Large Extra Dimensions in the Non resonant Diphoton Channel with 35 9fb 1 of Sqrt s written by Steven M Kaplan and published by . This book was released on 2017 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Search for Large Extra Dimensions in the Diphoton Final State at the Large Hadron Collider written by and published by . This book was released on 2011 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Search for Large Extra Dimensions Via Single Photon Plus Missing Energy Final States at S 1 2 written by Edgar Fernando Carrera and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: This dissertation presents a search for large extra dimensions in the single photon plus missing transverse energy final states. We use a data sample of approximately 2.7fb^-1 of ppbar collisions at sqrt(s)= 1.96 TeV (recorded with the D0 detector) to investigate direct Kaluza Klein graviton production and set limits, at the 95% C.L., on the fundamental mass scale M_{D} from 970 to 816 GeV for two to eight extra dimensions.

Download or read book Searches for Extra Dimensions and for Heavy Resonances in Dilepton Diphoton Electron Photon and Electron Missing E T Final States with the D0 Detector written by and published by . This book was released on 2007 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high mass spectrum of lepton and photon pairs is sensitive to a broad array of new physics. Examples include searches for extra dimensions in the dielectron and diphoton channels. A direct search for electron compositeness is possible in the production of excited electrons decaying into an electron and a photon. In addition, the electron plus missing transverse energy data sample can be searched for a W' boson. Latest results in searches in the high mass dielectron, diphoton, electron plus photon, and electron plus missing transverse energy channels obtained by the D0 experiment at the Tevatron are reported, using a data set corresponding to an integrated luminosity of about 1 inverse femtobarn. Since no significant excess is observed in the data in all cases, limits are set which improve on previous searches.

Download or read book Search For Universal Extra Dimensions in the Two Photon and Missing Transverse Energy Final State With The ATLAS Detector written by Baharak Fatholahzadeh and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Search for Large Extra Dimensions with Diphoton Events at CDF i e Collider Detector at Fermilab written by Simona Murgia and published by . This book was released on 2002 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Search for Large Extra Dimensions in the Jet Missing Et Final State in Sqrt s written by Hai Zheng and published by . This book was released on 2002 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Search for Large Extra Dimensions Via Single Photons Plus Missing Energy Final States at S 1 2 written by and published by . This book was released on 2008 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents a search for large extra dimensions in the single photon plus missing transverse energy final states. We use a data sample of approximately 2.7 fb−1 of p{bar p} collisions at √s = 1.96 TeV (recorded with the D− detector) to investigate direct Kaluza Klein graviton production and set limits, at the 95% C.L., on the fundamental mass scale M{sub D} from 970 GeV to 816 GeV for two to eight extra dimensions.

Download or read book Search for Large Extra Dimensions in the Mono photon Final State at S 1 2 written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report on a search for large extra dimensions in a data sample of approximately 1 fb−1 of p{bar p} collisions at √s = 1.96 TeV. They investigate Kaluza-Klein graviton production with a photon and missing transverse energy in the final state. At the 95% C.L. they set limits on the fundamental mass scale M{sub D} from 884 GeV to 778 GeV for 2 to 8 extra dimensions.

Download or read book Search for Signatures of Extra Dimensions in the Diphoton Mass Spectrum at the Large Hadron Collider written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Search for Large Extra Spatial Dimensions in Dimuon Production at written by and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the results of a search for the e.ects of large extra spatial dimensions in p{bar p} collisions at √s = 1.96 TeV in events containing a pair of energetic muons. The data correspond to 246 pb−1 of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron Collider. Good agreement with the expected background was found, yielding no evidence for large extra dimensions. We set 95% C.L. lower limits on the fundamental Planck scale between 0.85 TeV and 1.27 TeV within several formalisms. These are the most stringent limits achieved in the dimuon channel to date.

Download or read book Search for Large Extra Dimensions in the Mono photon Final State at S written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report on a search for large extra dimensions in a data sample of approximately 1 fb−1 of p{bar p} collisions at √s = 1.96 TeV. They investigate Kaluza-Klein graviton production with a photon and missing transverse energy in the final state. At the 95% C.L. they set limits on the fundamental mass scale M{sub D} from 884 GeV to 778 GeV for 2 to 8 extra dimensions.

Download or read book Search for Large Extra Dimensions in Final States Containing One Photon Or Jet and Large Missing Transverse Energy Produced in P Anti p Collisions at S written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Search for Large Extra Dimensions in Final States Containing One Photon Or Jet and Large Missing Transverse Energy Produced in P Anti p Collisions at S 1 2 written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Electroweak Interactions and Unified Theories written by J. Thanh Van Tran and published by Atlantica Séguier Frontières. This book was released on 1988 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Top Quark Physics at Hadron Colliders written by Arnulf Quadt and published by Springer Science & Business Media. This book was released on 2007-08-16 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: This will be a required acquisition text for academic libraries. More than ten years after its discovery, still relatively little is known about the top quark, the heaviest known elementary particle. This extensive survey summarizes and reviews top-quark physics based on the precision measurements at the Fermilab Tevatron Collider, as well as examining in detail the sensitivity of these experiments to new physics. Finally, the author provides an overview of top quark physics at the Large Hadron Collider.

Download or read book Weak Scale Supersymmetry written by Howard Baer and published by Cambridge University Press. This book was released on 2023-01-31 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: This OA text develops the basic concepts of supersymmetry for experimental and phenomenological particle physicists and graduate students.