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Search For Diphoton Events With Large Missing Transverse Energy In 63 Fb 1 Of Ppbar Collisions Using The D0 Detector At The Fermilab Tevatron Collider
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Book Synopsis Search for Diphoton Events with Large Missing Transverse Energy in 6.3 Fb-1 of Ppbar Collisions Using the D0 Detector at the Fermilab Tevatron Collider by :
Download or read book Search for Diphoton Events with Large Missing Transverse Energy in 6.3 Fb-1 of Ppbar Collisions Using the D0 Detector at the Fermilab Tevatron Collider written by and published by . This book was released on 2010 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for diphoton events with large missing transverse energy produced in p{bar p} collisions at √s = 1.96 TeV is presented. The data were collected with the D0 detector at the Fermilab Tevatron Collider between 2002 and 2010, and correspond to 6.3 fb−1 of integrated luminosity. The observed missing transverse energy distribution is well described by the Standard Model prediction, and 95% C.L. limits are derived on two realizations of theories beyond the Standard Model. In a gauge mediated supersymmetry breaking scenario, the breaking scale [Lambda] is excluded for [Lambda]
Book Synopsis Search for Diphoton Events with Large Missing Transverse Energy in 6.3 Fb-1 of Pp Collisions Using the D0 Detector at the Fermilab Tevatron Collider by : Mark Stephen Cooke
Download or read book Search for Diphoton Events with Large Missing Transverse Energy in 6.3 Fb-1 of Pp Collisions Using the D0 Detector at the Fermilab Tevatron Collider written by Mark Stephen Cooke and published by . This book was released on 2010 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Diphoton Events with Large Missing Transverse Energy in 6.3 Fb-1 of P$\bar{p}$ Collisions Using the D0 Detector at the Fermilab Tevatron Collider by :
Download or read book Search for Diphoton Events with Large Missing Transverse Energy in 6.3 Fb-1 of P$\bar{p}$ Collisions Using the D0 Detector at the Fermilab Tevatron Collider written by and published by . This book was released on 2010 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for diphoton events with large missing transverse energy produced in p$ar{p}$ collisions at √s = 1.96 TeV is presented. The data were collected with the D0 detector at the Fermilab Tevatron Collider between 2002 and 2010, and correspond to 6.3 fb-1 of integrated luminosity. The observed missing transverse energy distribution is well described by the Standard Model prediction, and 95% C.L. limits are derived on two realizations of theories beyond the Standard Model. In a gauge mediated supersymmetry breaking scenario, the breaking scale ? is excluded for ? 124 TeV. In a universal extra dimension model including gravitational decays, the compactification radius Rsubc/sub is excluded for Rsubc/subsup-1
Book Synopsis Search for Diphoton Events with Large Missing Transverse Energy in 6.3 Fb$^{-1}$ of $\mathbf{p\bar{p}}$ Collisions at $\mathbf{\sqrt{s} by :
Download or read book Search for Diphoton Events with Large Missing Transverse Energy in 6.3 Fb$^{-1}$ of $\mathbf{p\bar{p}}$ Collisions at $\mathbf{\sqrt{s} written by and published by . This book was released on 2010 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report a search for diphoton events with large missing transverse energy produced in p{bar p} collisions at √s = 1.96 TeV. The data were collected with the D0 detector at the Fermilab Tevatron Collider, and correspond to 6.3 fb−1 of integrated luminosity. The observed missing transverse energy distribution is well described by the standard model prediction, and 95% C.L. limits are derived on two realizations of theories beyond the standard model. In a gauge mediated supersymmetry breaking scenario, the breaking scale [Lambda] is excluded for [Lambda]
Book Synopsis Search for Diphoton Events with Large Missing Transverse Energy in 7 TeV Proton-Proton Collisions with the ATLAS Detector by :
Download or read book Search for Diphoton Events with Large Missing Transverse Energy in 7 TeV Proton-Proton Collisions with the ATLAS Detector written by and published by . This book was released on 2013 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at S**(1/2) by :
Download or read book Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at S**(1/2) written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present the results of a search for anomalous production of diphoton events with large missing transverse energy using the Collider Detector at Fermilab. In 202 pb[sup -1] of p[bar p] collisions at [radical]s = 1.96 TeV they observe no candidate events, with an expected standard model background of 0.27 [+-] 0.07(stat) [+-] 0.10(syst) events. The results exclude a lightest chargino of mass less than 167 GeV/c[sup 2], and lightest neutralino of 93 GeV/c[sup 2] at 95% confidence level in a gauge-mediated supersymmetry-breaking model with a light gravitino.
Book Synopsis Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at {u221A}s by :
Download or read book Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at {u221A}s written by and published by . This book was released on 2004 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present the results of a search for anomalous production of diphoton events with large missing transverse energy using the Collider Detector at Fermilab. In 202 pb-1 of p$ar{p}$ collisions at √s = 1.96 TeV they observe no candidate events, with an expected standard model background of 0.27 ± 0.07(stat) ± 0.10(syst) events. The results exclude a lightest chargino of mass less than 167 GeV/c2, and lightest neutralino of 93 GeV/c2 at 95% confidence level in a gauge-mediated supersymmetry-breaking model with a light gravitino.
Book Synopsis Search for Squarks and Gluinos in Events with Jets and Missing Transverse Energy in P Anti-p Collisions at S**1/2 by :
Download or read book Search for Squarks and Gluinos in Events with Jets and Missing Transverse Energy in P Anti-p Collisions at S**1/2 written by and published by . This book was released on 2006 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of a search for squarks and gluinos using data from ppbar collisions recorded at a center-of-mass energy of 1.96 TeV by the D0 detector at the Fermilab Tevatron Collider are reported. The topologies analyzed consist of acoplanar-jet and multijet events with large missing transverse energy. No evidence for the production of squarks or gluinos was found in a data sample of 310 pb-1. Lower limits of 325 and 241 GeV were derived at the 95% C.L. on the squark and gluino masses, respectively, within the framework of minimal supergravity with tan[beta]=3, A0=0, and mu
Book Synopsis Observation of Central Exclusive Diphoton Production at the Tevatron by :
Download or read book Observation of Central Exclusive Diphoton Production at the Tevatron written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have observed exclusive [gamma][gamma] production in proton-antiproton collisions at the Tevatron at √ s = 1.96 TeV. We use data corresponding to 1.11 ± 0.07 fb-1 integrated luminosity taken by the Run II Collider Detector at Fermilab, with a trigger requiring two electromagnetic showers, each with transverse energy ET > 2 GeV, and vetoing on hits in the forward beam shower counters. We select events with two electromagnetic showers, each with transverse energy ET > 2.5 GeV and pseudorapidity.
Book Synopsis Search for Large Extra Dimensions in the Exclusive Photon + Missing Energy Channel in P Anti-p Collisions by : Jose A. Lazoflores
Download or read book Search for Large Extra Dimensions in the Exclusive Photon + Missing Energy Channel in P Anti-p Collisions written by Jose A. Lazoflores and published by . This book was released on 2006 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search was conducted for evidence of large extra dimensions (LED) at Fermi National Accelerator Laboratory's Tevatron using the D0 detector. The Tevatron is a p{bar p} collider at a center of mass energy of 1.96 TeV. Events with particles escaping into extra dimensions will have large missing energy. The search was carried out using data from a total luminosity of 197 {+-} 13 pb{sup -1} with an observable high transverse momentum photon and a large transverse missing energy. The 70 observed events are consistent with photons produced by standard known reactions plus other background processes produced by cosmic muons. The mass limits on the fundamental mass scale at 95% confidence level for large extra dimensions of 2, 4, 6 and 8 are 500 GeV, 581 GeV, 630 GeV, and 668 GeV respectively.
Book Synopsis Search for Heavy, Long-lived Particles that Decay to Photons in Ppbar Collisions at Sqrt(s) by : Peter Wagner
Download or read book Search for Heavy, Long-lived Particles that Decay to Photons in Ppbar Collisions at Sqrt(s) written by Peter Wagner and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents the results of the first search for heavy, neutral, longlived particles that decay to photons at a hadron collider. We use a sample of +jet+missing transverse energy events in pp̄ collisions at s = 1.96 TEV taken with the Collider Detector at Fermilab. Candidate events are selected based on the arrival time of a high-energy photon at the electromagnetic calorimeter as measured with a timing system that was recently installed. The final result is that we find 2 events, using 570"34 pb−1 of data collected during 2004-2005 at the Fermilab Tevatron, consistent with the background estimate of 1.3"0.7 events.
Book Synopsis Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at S**(1/2) by : Min Suk Kim
Download or read book Search for Gauge Mediated SUSY Breaking in Diphoton Events in Proton Anti-proton Collisions at S**(1/2) written by Min Suk Kim and published by . This book was released on 2004 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present the results of a search for anomalous production of diphoton events with large missing transverse energy using the Collider Detector at Fermilab. In 202 pb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV they observe no candidate events, with an expected standard model background of 0.27 {+-} 0.07(stat) {+-} 0.10(syst) events. The results exclude a lightest chargino of mass less than 167 GeV/c{sup 2}, and lightest neutralino of 93 GeV/c{sup 2} at 95% confidence level in a gauge-mediated supersymmetry-breaking model with a light gravitino.
Book Synopsis A Search for New Physics in Photon-lepton Events in Proton-antiproton Collisions At[radical] S by :
Download or read book A Search for New Physics in Photon-lepton Events in Proton-antiproton Collisions At[radical] S written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the results of a search in p[bar p] collisions at[radical]s= 1.8 TeV for anomalous production of events containing a photon with large transverse energy and a lepton (e or[mu]) with large transverse energy, using 86 pb[sup -1] of data collected at the Collider Detector at Fermilab during the 1994-95 collider run at the Fermilab Tevatron. The presence of large missing transverse energy (E[sub T]), additional photons, or additional leptons in these events is also analyzed. The results are consistent with standard model expectations, with the possible exception of photon-lepton events with large E[sub T], for which the probability of a statistical fluctuation of the standard model expectation up to and above the observed level is 0.7%.
Book Synopsis Search for Large Extra Dimensions in the Exclusive Photon + Missing Energy Channel in P$\bar{p}$ Collisions by :
Download or read book Search for Large Extra Dimensions in the Exclusive Photon + Missing Energy Channel in P$\bar{p}$ Collisions written by and published by . This book was released on 2006 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search was conducted for evidence of large extra dimensions (LED) at Fermi National Accelerator Laboratory's Tevatron using the D0 detector. The Tevatron is a p$\bar{p}$ collider at a center of mass energy of 1.96 TeV. Events with particles escaping into extra dimensions will have large missing energy. The search was carried out using data from a total luminosity of 197 ± 13 pb-1 with an observable high transverse momentum photon and a large transverse missing energy. The 70 observed events are consistent with photons produced by standard known reactions plus other background processes produced by cosmic muons. The mass limits on the fundamental mass scale at 95% confidence level for large extra dimensions of 2, 4, 6 and 8 are 500 GeV, 581 GeV, 630 GeV, and 668 GeV respectively.
Book Synopsis Search for Anomalous Production of Events with a Photon, Jet, B-quark Jet, and Missing Transverse Energy by :
Download or read book Search for Anomalous Production of Events with a Photon, Jet, B-quark Jet, and Missing Transverse Energy written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a signature-based search for anomalous production of events containing a photon, two jets, of which at least one is identified as originating from a b quark, and missing transverse energy (/E{sub T}). The search uses data corresponding to 2.0 fb−1 of integrated luminosity from p{bar p} collisions at a center-of-mass energy of √s = 1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. From 6,697,466 events with a photon candidate with transverse energy ET > 25 GeV, we find 617 events with /E{sub T} > 25 GeV and two or more jets with E{sub T} > 15 GeV, at least one identified as originating from a b quark, versus an expectation of 607 ± 113 events. Increasing the requirement on /E{sub T} to 50 GeV, we find 28 events versus an expectation of 30 ± 11 events. We find no indications of non-standard-model phenomena.
Book Synopsis Study of Double Parton Interactions in Diphoton + Dijet Events in $p\bar{p}$ Collisions at $\sqrt{s} by :
Download or read book Study of Double Parton Interactions in Diphoton + Dijet Events in $p\bar{p}$ Collisions at $\sqrt{s} written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for New Phenomena in Events with a Photon and Missing Transverse Momentum in Pp Collisions at $$ \sqrt{s} by :
Download or read book Search for New Phenomena in Events with a Photon and Missing Transverse Momentum in Pp Collisions at $$ \sqrt{s} written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper, results of a search for new phenomena in events with an energetic photon and large missing transverse momentum with the ATLAS experiment at the Large Hadron Collider are reported. The data were collected in proton-proton collisions at a centre-of-mass energy of 13 TeV and correspond to an integrated luminosity of 3.2 fb-1. The observed data are in agreement with the Standard Model expectations. Exclusion limits are presented in models of new phenomena including pair production of dark matter candidates or large extra spatial dimensions. In a simplified model of dark matter and an axial-vector mediator, the search excludes mediator masses below 710 GeV for dark matter candidate masses below 150 GeV. In an effective theory of dark matter production, values of the suppression scale M * up to 570 GeV are excluded and the effect of truncation for various coupling values is reported. Finally, for the ADD large extra spatial dimension model the search places more stringent limits than earlier searches in the same event topology, excluding M D up to about 2.3 (2.8) TeV for two (six) additional spatial dimensions; the limits are reduced by 20-40% depending on the number of additional spatial dimensions when applying a truncation procedure.
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