Search For New Physics In Fully Hadronic Nal States Using The Mt2 Variable At A Center Of Mass Energy Of 13 Tev With The Cms Detector
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Search For New Physics In Fully Hadronic Nal States Using The Mt2 Variable At A Center Of Mass Energy Of 13 Tev With The Cms Detector
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Author : Jason Gran
language : en
Publisher:
Release Date : 2016
Search For New Physics In Fully Hadronic Nal States Using The Mt2 Variable At A Center Of Mass Energy Of 13 Tev With The Cms Detector written by Jason Gran and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
An inclusive search for new physics in events with fully hadronic final states using the MT2 variable is presented. The results are based on a sample of 13 TeV center-of-mass energy proton-proton collisions, corresponding to 2.3 fb-1 of integrated luminosity collected with the CMS detector at the LHC in 2015. No excess event yield above the Standard Model background expectation is observed. The results are interpreted as limits on simplified models of supersymmetry, expressed as limits on the masses of potential new colored particles. Assuming a stable LSP with mass less than 500 GeV, gluino masses up to 1550-1750 are excluded at 95% confidence level, depending on the gluino decay mechanism. For models of direct squark pair production, top squarks with masses up to 800 GeV are excluded. Bottom squarks with masses up to 880 GeV are excluded. Light flavor squarks with masses up to 600-1260 GeV, depending on the degeneracy of squark masses, are excluded.
Search For New Physics With The Mt2 Variable In All Jets Final States Produced In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2016
Search For New Physics With The Mt2 Variable In All Jets Final States Produced In Pp Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
A search for new physics is performed using events that contain one or more jets, no isolated leptons, and a large transverse momentum imbalance, as measured through the MT2 variable, which is an extension of the transverse mass in events with two invisible particles. The results are based on a sample of proton-proton collisions collected at a center-of-mass energy of 13 TeV with the CMS detector at the LHC, and that corresponds to an integrated luminosity of 2.3 inverse femtobarns. The observed event yields in the data are consistent with predictions for the standard model backgrounds. The results are interpreted using simplified models of supersymmetry and are expressed in terms of limits on the masses of potential new colored particles. Assuming that the lightest neutralino is stable and has a mass less than about 500 GeV, gluino masses up to 1550-1750 GeV are excluded at 95% confidence level, depending on the gluino decay mechanism. For the scenario of direct production of squark-antisquark pairs, top squarks with masses up to 800 GeV are excluded, assuming a 100% branching fraction for the decay to a top quark and neutralino. Similarly, bottom squark masses are excluded up to 880 GeV, and masses of light-flavor squarks are excluded up to 600-1260 GeV, depending on the degree of degeneracy of the squark masses.
Search For New Physics In All Hadronic Events With Alphat In 8 Tev Data With Cms
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Author : Yossof Eshaq
language : en
Publisher:
Release Date : 2015
Search For New Physics In All Hadronic Events With Alphat In 8 Tev Data With Cms written by Yossof Eshaq and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
"An inclusive search for supersymmetric processes that produce final states with jets and missing transverse energy is performed in pp collisions at a center-of-mass energy of [the square root of] s = 8 TeV. The data sample corresponds to an integrated luminosity of 19.5 fb−1 collected by the CMS experiment at the LHC. In this search, a dimensionless kinematic variable, [alpha]T, is used to discriminate between events with genuine and misreconstructed missing transverse energy. The search is based on an examination of the number of reconstructed jets per event, the scalar sum of transverse energies of these jets, and the number of these jets identified as originating from bottom quarks. The results are interpreted in two simplified models with direct stop production"--Page v.
Search For New Physics With A Same Sign Dilepton Pair At A Center Of Mass Energy Of 13 Tev At The Cms Detector
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Author : Christopher Alexandre George
language : en
Publisher:
Release Date : 2016
Search For New Physics With A Same Sign Dilepton Pair At A Center Of Mass Energy Of 13 Tev At The Cms Detector written by Christopher Alexandre George and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
An inclusive search for new physics is performed with a 13 TeV dataset from the CMS detector (May--November 2015, corresponding to 2.32/fb) using events with at least two leptons with the same electrical charge, missing transverse energy, and significant hadronic activity. No significant excesses are reported above the Standard Model background predictions. Constraints are set on a number of new physics models. As motivation, a thorough pedagogical review of the Standard Model and its shortcomings is presented in the first two chapters.
Searches For Physics Beyond The Standard Model With The Mt2 Variable In Hadronic Final States With And Without Disappearing Tracks In Proton Proton Collisions At S
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Author : Albert M. Sirunyan
language : en
Publisher:
Release Date : 2019
Searches For Physics Beyond The Standard Model With The Mt2 Variable In Hadronic Final States With And Without Disappearing Tracks In Proton Proton Collisions At S written by Albert M. Sirunyan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Search For New Phenomena In The Dijet Mass Distribution Using Math Display
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Author :
language : en
Publisher:
Release Date : 2015
Search For New Phenomena In The Dijet Mass Distribution Using Math Display written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Dijet events produced in LHC proton-proton collisions at a center-of-mass energy \(\sqrt{s}=8\) TeV are studied with the ATLAS detector using the full 2012 data set, with an integrated luminosity of 20.3 fb-1. Dijet masses up to about 4.5 TeV are probed. Resonancelike features are not observed in the dijet mass spectrum. Limits on the cross section times acceptance are set at the 95% credibility level for various hypotheses of new phenomena in terms of mass or energy scale, as appropriate. This analysis excludes excited quarks with a mass below 4.06 TeV, color-octet scalars with a mass below 2.70 TeV, heavy W' bosons with a mass below 2.45 TeV, chiral W* bosons with a mass below 1.75 TeV, and quantum black holes with six extra space-time dimensions with threshold mass below 5.66 TeV.
Search For New Physics In All Hadronic Final States With The Cms Experiment
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Author : Giorgia Rauco
language : en
Publisher:
Release Date : 2020
Search For New Physics In All Hadronic Final States With The Cms Experiment written by Giorgia Rauco and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Search For New Phenomena In The Dijet Mass Distribution Using Pp Collision Data At S
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Author :
language : en
Publisher:
Release Date : 2015
Search For New Phenomena In The Dijet Mass Distribution Using Pp Collision Data At S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Dijet events produced in LHC proton-proton collisions at a center-of-mass energy \(\sqrt{s}=8\) TeV are studied with the ATLAS detector using the full 2012 data set, with an integrated luminosity of 20.3 fb-1. Dijet masses up to about 4.5 TeV are probed. Resonancelike features are not observed in the dijet mass spectrum. Limits on the cross section times acceptance are set at the 95% credibility level for various hypotheses of new phenomena in terms of mass or energy scale, as appropriate. The analysis excludes excited quarks with a mass below 4.06 TeV, color-octet scalars with a mass below 2.70 TeV, heavy W' bosons with a mass below 2.45 TeV, chiral W* bosons with a mass below 1.75 TeV, and quantum black holes with six extra space-time dimensions with threshold mass below 5.66 TeV.
Exotic Physics
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Author :
language : en
Publisher:
Release Date : 2005
Exotic Physics written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
We present the results of a search for anomalous resonant production of tau lepton pairs with large invariant mass, the first such search using the CDF II Detector in Run II of the Tevatron p{bar p} collider. Such anomalous production could arise from various new physics processes. In a data sample corresponding to 195 pb−1 of integrated luminosity we predict 2.8 " 0.5 events from Standard Model background processes and observe 4. We use this result to set limits on the production of heavy scalar and vector particles decaying to tau lepton pairs.
Search For Flavor Changing Neutral Currents Decays In T Qz At Centre Of Mass Energy Of 13 Tev In Cms
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Author : 林俊廷
language : en
Publisher:
Release Date : 2020
Search For Flavor Changing Neutral Currents Decays In T Qz At Centre Of Mass Energy Of 13 Tev In Cms written by 林俊廷 and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.