Search For New Phenomena In Dijet Angular Distributions In Proton Proton Collisions At U221a S

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Search For New Phenomena In Dijet Angular Distributions In Proton Proton Collisions At U221a S

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Author :
language : en
Publisher:
Release Date : 2015

Search For New Phenomena In Dijet Angular Distributions In Proton Proton Collisions At U221a 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.

A search for new phenomena in LHC proton-proton collisions at a center-of-mass energy of √s=8 TeV was performed with the ATLAS detector using an integrated luminosity of 17.3 fb-1. The angular distributions are studied in events with at least two jets; the highest dijet mass observed is 5.5 TeV. All angular distributions are consistent with the predictions of the standard model. In a benchmark model of quark contact interactions, a compositeness scale below 8.1 TeV in a destructive interference scenario and 12.0 TeV in a constructive interference scenario is excluded at 95% C.L.; median expected limits are 8.9 TeV for the destructive interference scenario and 14.1 TeV for the constructive interference scenario.

Search For New Phenomena In Dijet Angular Distributions In Proton Proton Collisions At Math Display

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Author :
language : en
Publisher:
Release Date : 2015

Search For New Phenomena In Dijet Angular Distributions In Proton Proton Collisions At 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.

In this study, a search for new phenomena in LHC proton-proton collisions at a center-of-mass energy of √s=8 TeV was performed with the ATLAS detector using an integrated luminosity of 17.3 fb-1. The angular distributions are studied in events with at least two jets; the highest dijet mass observed is 5.5 TeV. All angular distributions are consistent with the predictions of the standard model. In a benchmark model of quark contact interactions, a compositeness scale below 8.1 TeV in a destructive interference scenario and 12.0 TeV in a constructive interference scenario is excluded at 95% C.L.; median expected limits are 8.9 TeV for the destructive interference scenario and 14.1 TeV for the constructive interference scenario.

Search For New Phenomena In Dijet Angular Distributions Measured With The Atlas Detector In Proton Proton Collisions At S 327 7 Tev

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Author : Thorsten A. Dietzsch
language : en
Publisher:
Release Date : 2013

Search For New Phenomena In Dijet Angular Distributions Measured With The Atlas Detector In Proton Proton Collisions At S 327 7 Tev written by Thorsten A. Dietzsch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

Search For New Phenomena In Dijet Angular Distributions In Proton Proton Collisions At S

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Author :
language : en
Publisher:
Release Date : 2015

Search For New Phenomena In Dijet Angular Distributions In Proton Proton Collisions 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.

In this study, a search for new phenomena in LHC proton-proton collisions at a center-of-mass energy of √s=8 TeV was performed with the ATLAS detector using an integrated luminosity of 17.3 fb-1. The angular distributions are studied in events with at least two jets; the highest dijet mass observed is 5.5 TeV. All angular distributions are consistent with the predictions of the standard model. In a benchmark model of quark contact interactions, a compositeness scale below 8.1 TeV in a destructive interference scenario and 12.0 TeV in a constructive interference scenario is excluded at 95% C.L.; median expected limits are 8.9 TeV for the destructive interference scenario and 14.1 TeV for the constructive interference scenario.

Search For New Phenomena In Dijet Angular Distributions Measured With The Atlas Detector In Proton Proton Collisions At Sqrt S

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Author : Thorsten Dietzsch
language : en
Publisher:
Release Date : 2013

Search For New Phenomena In Dijet Angular Distributions Measured With The Atlas Detector In Proton Proton Collisions At Sqrt S written by Thorsten Dietzsch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Jets categories.

Search For New Phenomena In Dijet Angular Distributions Measured With The Atlas Detector In Proton Proton Collisons At S

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Author :
language : en
Publisher:
Release Date : 2013

Search For New Phenomena In Dijet Angular Distributions Measured With The Atlas Detector In Proton Proton Collisons 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 2013 with categories.

Searches For New Physics Using Dijet Angular Distributions In Proton Proton Collisions At S

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Author : Ryan Mark Buckingham
language : en
Publisher:
Release Date : 2013

Searches For New Physics Using Dijet Angular Distributions In Proton Proton Collisions At S written by Ryan Mark Buckingham and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

Search For New Physics With Dijet Angular Distributions In Proton Proton Collisions At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2017

Search For New Physics With Dijet Angular Distributions In Proton Proton 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 2017 with categories.

A search is presented for extra spatial dimensions, quantum black holes, and quark contact interactions in measurements of dijet angular distributions in proton-proton collisions at sqrt(s) = 13 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 2.6 inverse femtobarns. The distributions are found to be in agreement with predictions from perturbative quantum chromodynamics that include electroweak corrections. Limits for different contact interaction models are obtained in a benchmark model, valid to next-to-leading order in QCD, in which only left-handed quarks participate, with quark contact interactions excluded up to a scale of 11.5 or 14.7 TeV for destructive or constructive interference, respectively. The production of quantum black holes is excluded for masses below 7.8 or 5.3 TeV, depending on the model. The lower limits for the scales of virtual graviton exchange in the Arkani-Hamed--Dimopoulos--Dvali model of extra spatial dimensions are in the range 7.9-11.2 TeV, and are the most stringent set of limits available.

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.

Searches For Dijet Resonances

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Author : Lydia Audrey Beresford
language : en
Publisher: Springer
Release Date : 2018-09-04

Searches For Dijet Resonances written by Lydia Audrey Beresford and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-04 with Science categories.

This book addresses one of the most intriguing mysteries of our universe: the nature of dark matter. The results presented here mark a significant and substantial contribution to the search for new physics, in particular for new particles that couple to dark matter. The first analysis presented is a search for heavy new particles that decay into pairs of hadronic jets (dijets). This pioneering analysis explores unprecedented dijet invariant masses, reaching nearly 7 TeV, and sets constraints on several important new physics models. The two subsequent analyses focus on the difficult low dijet mass region, down to 200 GeV, and employ a novel technique to efficiently gather low-mass dijet events. The results of these analyses transcend the long-standing constraints on dark matter mediator particles set by several existing experiments.