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Search For New Physics With Dijet Angular Distributions In Proton Proton Collisions At Sqrts
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Book Synopsis Search for New Physics with Dijet Angular Distributions in Proton-proton Collisions at $\sqrt{s}$ by :
Download or read book Search for New Physics with Dijet Angular Distributions in Proton-proton Collisions at $\sqrt{s}$ written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Search for New Phenomena in Dijet Angular Distributions Measured with the ATLAS Detector in Proton-Proton Collisions at Sqrt(s) by : Thorsten Dietzsch
Download or read book 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 published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dijet Angular Distributions in Proton-Proton Collisions by : Nele Boelaert
Download or read book Dijet Angular Distributions in Proton-Proton Collisions written by Nele Boelaert and published by Springer. This book was released on 2013-11-30 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is based on the first data from the Large Hadron Collider (LHC) at CERN. Its theme can be described as the classical Rutherford scattering experiment adapted to the LHC: measurement of scattering angles to search for new physics and substructure. At the LHC, colliding quarks and gluons exit the proton collisions as collimated particle showers, or jets. The thesis presents studies of the scattering angles of these jets. It includes a phenomenological study at the LHC design energy of 14 TeV, where a model of so-called large extra dimensions is used as a benchmark process for the sensitivity to new physics. The experimental result is the first measurement, made in 2010, by ATLAS, operating at the LHC start-up energy of 7 TeV. The result is compatible with the Standard Model and demonstrates how well the physics and the apparatus are understood. The first data is a tiny fraction of what will be accumulated in the coming years, and this study has set the stage for performing these measurements with confidence as the LHC accumulates luminosity and increases its energy, thereby probing smaller length scales.
Book Synopsis Searches for New Physics Using Dijet Angular Distributions in Proton-proton Collisions at √s by : Ryan Mark Buckingham
Download or read book Searches for New Physics Using Dijet Angular Distributions in Proton-proton Collisions at √s written by Ryan Mark Buckingham and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dijet Angular Distributions in Proton-Proton Collisions by : Nele Boelaert
Download or read book Dijet Angular Distributions in Proton-Proton Collisions written by Nele Boelaert and published by Springer Science & Business Media. This book was released on 2011-10-26 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is based on the first data from the Large Hadron Collider (LHC) at CERN. Its theme can be described as the classical Rutherford scattering experiment adapted to the LHC: measurement of scattering angles to search for new physics and substructure. At the LHC, colliding quarks and gluons exit the proton collisions as collimated particle showers, or jets. The thesis presents studies of the scattering angles of these jets. It includes a phenomenological study at the LHC design energy of 14 TeV, where a model of so-called large extra dimensions is used as a benchmark process for the sensitivity to new physics. The experimental result is the first measurement, made in 2010, by ATLAS, operating at the LHC start-up energy of 7 TeV. The result is compatible with the Standard Model and demonstrates how well the physics and the apparatus are understood. The first data is a tiny fraction of what will be accumulated in the coming years, and this study has set the stage for performing these measurements with confidence as the LHC accumulates luminosity and increases its energy, thereby probing smaller length scales.
Book Synopsis Search for Quark Contact Interactions and Extra Spatial Dimensions Using Dijet Angular Distributions in Proton-proton Collisions at $\sqrt S by :
Download or read book Search for Quark Contact Interactions and Extra Spatial Dimensions Using Dijet Angular Distributions in Proton-proton Collisions at $\sqrt S written by and published by . This book was released on 2015 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our search is presented for quark contact interactions and extra spatial dimensions in proton-proton collisions at √s=8TeVusing dijet angular distributions. The search is based on a data set corresponding to an integrated luminosity of 19.7fb-1collected by the CMS detector at the CERN LHC. Dijet angular distributions are found to be in agreement with the perturbative QCD predictions that include electroweak corrections. Limits on the contact interaction scale from a variety of models at next-to-leading order in QCD corrections are obtained. A benchmark model in which only left-handed quarks participate is excluded up to a scale of 9.0 (11.7)TeV for destructive (constructive) interference at 95% confidence level. Finally, lower limits between 5.9 and 8.4TeV on the scale of virtual graviton exchange are extracted for the Arkani-Hamed-Dimopoulos-Dvali model of extra spatial dimensions.
Book Synopsis Dijet Angular Distributions in Proton-proton Collisions at √s by : Nele Boelaert
Download or read book Dijet Angular Distributions in Proton-proton Collisions at √s written by Nele Boelaert and published by . This book was released on 2010 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Quark Compositeness in Dijet Angular Distributions from Pp Collisions at Sqrt(s) by :
Download or read book Search for Quark Compositeness in Dijet Angular Distributions from Pp Collisions at Sqrt(s) written by and published by . This book was released on 2012 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for quark compositeness using dijet angular distributions from pp collisions at sqrt(s) = 7 TeV is presented. The search has been carried out using a data sample corresponding to an integrated luminosity of 2.2 inverse femtobarns, recorded by the CMS experiment at the LHC. Normalized dijet angular distributions have been measured for dijet invariant masses from 0.4 TeV to above 3 TeV and compared with a variety of contact interaction models, including those which take into account the effects of next-to-leading-order QCD corrections. The data are found to be in agreement with the predictions of perturbative QCD, and lower limits are obtained on the contact interaction scale, ranging from 7.5 up to 14.5 TeV at 95% confidence level.
Book Synopsis Search for New Phenomena in Dijet Angular Distributions Measured with the ATLAS Detector in Proton-proton Collisions at √s _327 7 TeV by : Thorsten A. Dietzsch
Download or read book 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 published by . This book was released on 2013 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for New Phenomena in Dijet Angular Distributions Measured with the ATLAS Detector in Proton-proton Collisons at √s by :
Download or read book Search for New Phenomena in Dijet Angular Distributions Measured with the ATLAS Detector in Proton-proton Collisons at √s written by and published by . This book was released on 2013 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Quark Compositeness with the Dijet Centrality Ratio in $pp$ Collisions at $\sqrt{s} by :
Download or read book Search for Quark Compositeness with the Dijet Centrality Ratio in $pp$ Collisions at $\sqrt{s} written by and published by . This book was released on 2010 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for quark compositeness in the form of quark contact interactions, based on hadronic jet pairs (dijets) produced in proton-proton collisions at sqrt(s)=7 TeV, is described. The data sample of the study corresponds to an integrated luminosity of 2.9 inverse picobarns collected with the CMS detector at the LHC. The dijet centrality ratio, which quantifies the angular distribution of the dijets, is measured as a function of the invariant mass of the dijet system and is found to agree with the predictions of the Standard Model. A statistical analysis of the data provides a lower limit on the energy scale of quark contact interactions. The sensitivity of the analysis is such that the expected limit is 2.9 TeV; because the observed value of the centrality ratio at high invariant mass is below the expectation, the observed limit is 4.0 TeV at the 95% confidence level.
Book Synopsis Lepton Photon Interactions At High Energies (Lepton Photon 2017) - Proceedings Of The 28th International Symposium by : Wang Wei
Download or read book Lepton Photon Interactions At High Energies (Lepton Photon 2017) - Proceedings Of The 28th International Symposium written by Wang Wei and published by World Scientific. This book was released on 2020-02-27 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest of the 'Lepton Photon' symposium, one of the well-established series of meetings in the high-energy physics community, was successfully organized at the South Campus of Sun Yat-sen University, Guangzhou, China, from August 7-12, 2017, where physicists around the world gathered to discuss the latest advancements in the research field.This proceedings volume of the Lepton Photon 2017 collects contributions by the plenary session speakers and the posters' presenters, which cover the latest results in particle physics, nuclear physics, astrophysics, cosmology, and plans for future facilities.
Book Synopsis Search for New Phenomena in the Dijet Mass Distribution Using Pp Collision Data at S by :
Download or read book Search for New Phenomena in the Dijet Mass Distribution Using Pp Collision Data at S written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Search for New Physics Using Jets in Proton-proton Collisions by : Oliver Chris Endner
Download or read book Search for New Physics Using Jets in Proton-proton Collisions written by Oliver Chris Endner and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dijet Angular Distributions in Proton-antiproton Collisions at the Fermilab Tevatron by : Richard Dante St. Denis
Download or read book Dijet Angular Distributions in Proton-antiproton Collisions at the Fermilab Tevatron written by Richard Dante St. Denis and published by . This book was released on 1988 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for New Physics in Events with Two Photons and Missing Transverse Energy in Proton-proton Collisions at Sqrt(s) by : David Michael Morse
Download or read book A Search for New Physics in Events with Two Photons and Missing Transverse Energy in Proton-proton Collisions at Sqrt(s) written by David Michael Morse and published by . This book was released on 2013 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct Photon Center-of-Mass Angular Distributions in $p\bar{p}$ Collisions at $\sqrt{s}$ by :
Download or read book Direct Photon Center-of-Mass Angular Distributions in $p\bar{p}$ Collisions at $\sqrt{s}$ written by and published by . This book was released on 1992 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: The center-of-mass angular distribution of direct photon events, resulting from proton-antiproton collisions at a center-of-mass energy of 1.8 TeV, as measured by the Collider Detector at Fermi lab (CDF) during the 1988-1089 experimental run, is presented. The direct photon events are identified primarily through the direct photon's characteristic isolation from other particles. The main source of background is from rare fragmentation of QCD partons into single isolated neutral mesons, which decay into two or more photons. The background is removed statistically by exploitation of tile expected difference in the resulting shower profiles. The resulting angular distribution for direct photons, in the transverse momentum range from 22 to 45 Ge V is found to agree favorably with the predictions of Quantum Cbromodynamics (QCD) for an interaction with a fermion (spin 1/2) propagator.
