Search For Supersymmetry In Electroweak Production With Photons And Large Missing Transverse Energy In Pp Collisions At Sqrts PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Search For Supersymmetry In Electroweak Production With Photons And Large Missing Transverse Energy In Pp Collisions At Sqrts PDF full book. Access full book title Search For Supersymmetry In Electroweak Production With Photons And Large Missing Transverse Energy In Pp Collisions At Sqrts.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2016 |
| Genre | : |
| ISBN | : |
Download Search for Supersymmetry in Electroweak Production with Photons and Large Missing Transverse Energy in Pp Collisions at $\sqrt{s}$ Book in PDF, ePub and Kindle
Results are reported from a search for supersymmetry with gauge-mediated supersymmetry breaking in electroweak production. Final states with photons and large missing transverse energy ($E_{\mathrm{T}}^{\text{miss}}$) were examined. The data sample was collected in pp collisions at $\sqrt{s} = $ 8 TeV with the CMS detector at the LHC and corresponds to 7.4 fb$^{-1}$. The analysis focuses on scenarios in which the lightest neutralino has bino- or wino-like components, resulting in decays to photons and gravitinos, where the gravitinos escape undetected. The data were obtained using a specially designed trigger with dedicated low thresholds, providing good sensitivity to signatures with photons, $E_{\mathrm{T}}^{\text{miss}}$, and low hadronic energy. No excess of events over the standard model expectation is observed. The results are interpreted using the model of general gauge mediation. With the wino mass fixed at 10 GeV above that of the bino, wino masses below 710 GeV are excluded at 95% confidence level. Constraints are also set in the context of two simplified models, for which the analysis sets the lowest cross section limits on the electroweak production of supersymmetric particles.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2016 |
| Genre | : |
| ISBN | : |
Download Search for Supersymmetry in Electroweak Production with Photons and Large Missing Transverse Energy in Pp Collisions at √s Book in PDF, ePub and Kindle
| Author | : |
| Publisher | : |
| Total Pages | : 28 |
| Release | : 2011 |
| Genre | : |
| ISBN | : |
Download Search for Supersymmetry in Events with a Lepton, a Photon, and Large Missing Transverse Energy in Pp Collisions at Sqrt(s) Book in PDF, ePub and Kindle
A search is performed for an excess of events, over the standard model expectations, with a photon, a lepton, and large missing transverse energy in pp collisions at sqrt(s) = 7 TeV. Such events are expected in many new physics models, in particular a supersymmetric theory that is broken via a gauge-mediated mechanism, when the lightest charged and neutral gauginos are mass degenerate. The data sample used in this search corresponds to an integrated luminosity of 35 inverse picobarns collected with the CMS detector at the LHC. No evidence of such an excess above the standard model backgrounds, dominated by W-gamma production, is found. The results are presented as 95% confidence level upper limits on the cross section for a benchmark gauge-mediated scenario, and are then converted into exclusion limits on the squark, gluino, and wino masses.
| Author | : Yutaro Iiyama |
| Publisher | : Springer |
| Total Pages | : 182 |
| Release | : 2017-06-14 |
| Genre | : Science |
| ISBN | : 3319586610 |
Download Search for Supersymmetry in pp Collisions at √s = 8 TeV with a Photon, Lepton, and Missing Transverse Energy Book in PDF, ePub and Kindle
This Ph.D. thesis is a search for physics beyond the standard model (SM) of particle physics, which successfully describes the interactions and properties of all known elementary particles. However, no particle exists in the SM that can account for the dark matter, which makes up about one quarter of the energy-mass content of the universe. Understanding the nature of dark matter is one goal of the CERN Large Hadron Collider (LHC). The extension of the SM with supersymmetry (SUSY) is considered a promising possibilities to explain dark matter. The nominated thesis describes a search for SUSY using data collected by the CMS experiment at the LHC. It utilizes a final state consisting of a photon, a lepton, and a large momentum imbalance probing a class of SUSY models that has not yet been studied extensively. The thesis stands out not only due to its content that is explained with clarity but also because the author performed more or less all aspects of the thesis analysis by himself, from data skimming to limit calculations, which is extremely rare, especially nowadays in the large LHC collaborations.
| Author | : |
| Publisher | : |
| Total Pages | : 36 |
| Release | : 2015 |
| Genre | : |
| ISBN | : |
Download Search for Supersymmetry with a Photon, a Lepton, and Missing Transverse Momentum in Pp Collisions at $\sqrt{s}$ Book in PDF, ePub and Kindle
Our search for supersymmetry involving events with at least one photon, one electron or muon, and large missing transverse momentum has been performed by the CMS experiment. The data sample corresponds to an integrated luminosity of 19.7 fb-1 of pp collisions at √ s = 8 TeV, produced at the CERN LHC. No excess of events is observed beyond expectations from standard model processes. The result of the search is interpreted in the context of a general model of gauge-mediated supersymmetry breaking, where the charged and neutral winos are the next-to-lightest supersymmetric particles. Within this model, winos with a mass up to 360 GeV are excluded at the 95% confidence level. Also, two simplified models inspired by gauge-mediated supersymmetry breaking are also examined, and used to derive upper limits on the production cross sections of specific supersymmetric processes.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2016 |
| Genre | : |
| ISBN | : |
Download Search for Supersymmetry in Events with Photons and Missing Transverse Energy in Pp Collisions at 13 TeV. Book in PDF, ePub and Kindle
The results of a search for new physics in final states with photons and missing transverse energy are reported. The study is based on a sample of proton-proton collisions collected at a center-of-mass energy of 13 TeV with the CMS detector in 2015, corresponding to an integrated luminosity of 2.3 inverse femtobarns. Final states with two photons and significant missing transverse energy are used to search for supersymmetric particles in models of supersymmetry (SUSY) with general gauge-mediated (GGM) supersymmetry breaking. No excess is observed with respect to the standard model expectation, and the results are used to set limits on gluino pair production and squark pair production in the GGM SUSY framework. Gluino masses below 1.65 TeV and squark masses below 1.37 TeV are excluded at a 95% confidence level.
| Author | : Tova Ray Holmes |
| Publisher | : |
| Total Pages | : 191 |
| Release | : 2016 |
| Genre | : |
| ISBN | : |
Download A Search for Supersymmetry in Events with a Z Boson, Jets, and Missing Transverse Energy in Pp Collisions with Sqrt(s) Book in PDF, ePub and Kindle
A search for new phenomena in final states containing a Z boson decaying to electrons or muons, jets, and large missing transverse momentum is presented. This search uses proton--proton collision data collected during 2015 and 2016 at a center of mass energy sqrt(s)=13 TeV by the ATLAS detector at the Large Hadron Collider, which correspond to an integrated luminosity of 14.7 fb-1. The search targets the pair production of supersymmetric particles, squarks or gluinos, which decay via jets and a Z boson to the lightest Supersymmetric particle, which does not interact with the ATLAS detector. Results are interpreted in simplified models of gluino-pair (squark-pair) production, and provide sensitivity to gluinos (squarks) with masses as large as 1.3 (1.0) TeV.
| Author | : |
| Publisher | : |
| Total Pages | : 40 |
| Release | : 2011 |
| Genre | : |
| ISBN | : |
Download Search for Supersymmetry in Pp Collisions at Sqrt(s) Book in PDF, ePub and Kindle
Results are reported from a search for physics beyond the standard model in proton-proton collisions at a center-of-mass energy of 7 TeV, focusing on the signature with a single, isolated, high-transverse-momentum lepton (electron or muon), energetic jets, and large missing transverse momentum. The data sample comprises an integrated luminosity of 36 inverse picobarns, recorded by the CMS experiment at the LHC. The search is motivated by models of new physics, including supersymmetry. The observed event yields are consistent with standard model backgrounds predicted using control samples obtained from the data. The characteristics of the event sample are consistent with those expected for the production of t t-bar and W +jets events. The results are interpreted in terms of limits on the parameter space for the constrained minimal supersymmetric extension of the standard model.
| Author | : Robin James Nandi |
| Publisher | : |
| Total Pages | : |
| Release | : 2012 |
| Genre | : |
| ISBN | : |
Download A Search for Supersymmetry in Events with Photons and Jets from Proton-proton Collisions at √s Book in PDF, ePub and Kindle
An exclusion of Gauge Mediated Supersymmetry Breaking at 95% confidence level is made in the squark mass vs gluino mass parameter space using 1:1 fb -1 of proton-proton collisions data from the Large Hadron Collider. The event selection is based on the strong production signature of photons, jets and missing transverse energy. Missing transverse energy is used to distinguish signal from background. The background is estimated with a data driven technique. The CLs method is used to exclude models with squark mass and gluino mass up to around 1TeV.
| Author | : Wee Don Teo |
| Publisher | : |
| Total Pages | : 197 |
| Release | : 2013 |
| Genre | : |
| ISBN | : |
Download Search for Supersymmetry with B-quark Jets and Missing Transverse Energy in Pp Collisions at Sqrt(S) Book in PDF, ePub and Kindle
Miss We present a search for supersymmetry in events with large ET, no leptons, at least three jets, and one or more b-quark jets. We use a data sample corre[SQUARE ROOT] sponding to 4.98 fb[-]1 of proton-proton collisions at s = 7 TeV collected by the CMS experiment in 2011. The primary sources of standard model background are evaluated using data-driven techniques. We find good agreement between the data and the sum of the background predictions. The results are used to constrain the cross sections for the production of b-quark-enriched final states in the context of supersymmetric models.
