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]

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:

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

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]

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:

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.

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

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.

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.

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%.

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.

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.

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.

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.

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:

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.

Download or read book New New phenomena Results from D Zero written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have searched for diphoton events ([gamma][gamma] /E[sub T]) with large missing transverse momentum, [gamma] /E[sub T] events ([gamma] /E[sub T]+[ge] 2 jets) with two or more jets, and diphoton events ([gamma][gamma]) with high transverse energies in p[anti p] collisions at[radical]s= 1.8 TeV using approximately 100 pb[sup -1] of data collected with the D0 detector at the Fermilab Tevatron in 1992-1996. No excess of events beyond the expected backgrounds is observed. The null results are interpreted in supersymmetric models with a dominant[tilde[xi]][sup 0][sub 2][yields][gamma][tilde[xi]][sup 0][sub 1] decay and in terms of Dirac pointlike monopole production.