Search For Diphoton Events With Large Missing Transverse Energy In 6 3 Fb 1 Of Mathbf P Bar P Collisions At Mathbf Sqrt S
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Search For Diphoton Events With Large Missing Transverse Energy In 6 3 Fb 1 Of Mathbf P Bar P Collisions At Mathbf Sqrt S
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Author :
language : en
Publisher:
Release Date : 2010
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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
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]
Search For Events With Leptonic Jets And Missing Transverse Energy In Mathbf P Bar P Collisions At Mathbf Sqrt S
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Author :
language : en
Publisher:
Release Date : 2010
Search For Events With Leptonic Jets And Missing Transverse Energy In Mathbf P Bar P Collisions At Mathbf 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 2010 with categories.
We present the first search for pair production of isolated jets of charged leptons in association with a large imbalance in transverse energy in p{bar p} collisions using 5.8 fb−1 of integrated luminosity collected by the D0 detector at the Fermilab Tevatron Collider. No excess is observed above Standard Model background, and the result is used to set upper limits on the production cross section of pairs of supersymmetric chargino and neutralino particles as a function of 'dark-photon' mass, where the dark photon is produced in the decay of the lightest supersymmetric particle.
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
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Author :
language : en
Publisher:
Release Date : 2010
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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
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
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
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Author :
language : en
Publisher:
Release Date : 2010
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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
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]
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
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Author : Mark Stephen Cooke
language : en
Publisher:
Release Date : 2010
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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Search For New Phenomena In Events With A Photon And Missing Transverse Momentum In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2016
Search For New Phenomena In Events With A Photon And Missing Transverse Momentum In Pp 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 2016 with categories.
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.
Study Of P Bar P Collisions That Contain Leptons A Photon And A B Quark Using The Cdf Ii Detector
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Author :
language : en
Publisher:
Release Date : 2011
Study Of P Bar P Collisions That Contain Leptons A Photon And A B Quark Using The Cdf Ii Detector written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
We present a search for anomalous production of the signature lepton + photon + b-quark + missing transverse energy (`[gamma]6ETb) produced in $p\bar{p}$ collisions at √ s = 1.96 TeV using 6.0 fb-1 of data taken with the CDF detector in Run II at the Tevatron. In addition to this signature-based search, we present a closely-related search for top pair production with an additional radiated photon, t$\bar{t}$[gamma]. We find 85 `[gamma]6ETb events versus an expectation of 99.1±9.3 events. High-statistics control samples are used to evaluate a low-energy photon [chi] 2 cut. Additionally requiring the events to contain at least three jets, have a total transverse energy of 200 GeV, and that the photon candidate passes the [chi] 2 cut, we observe 30 t$\bar{t}$[gamma] candidate events versus an expectation from non-top Standard Model (SM) sources of 13.0 ± 2.1 Assuming the difference between the observed number and the predicted non-top SM total is due to top production, we measure the tt$\bar{[gamma]}$ cross section to be 0.18 ± 0.08 pb. We also measure the ratio of the t$\bar{t}$[gamma] cross section to the t$\bar{t}$cross section to be 0.024 ± 0.009, which compares well with a SM prediction of 0.024 ± 0.013.
Search For New Physics In Lepton Photon X Events With 929 Pb 1 Of P Anti P Collisions At S 1 2
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Author : A. Loginov
language : en
Publisher:
Release Date : 2006
Search For New Physics In Lepton Photon X Events With 929 Pb 1 Of P Anti P Collisions At S 1 2 written by A. Loginov and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
The authors present results of a search in 929 {+-} 56 pb{sup -1} of p{bar p} collisions at 1.96 TeV for the anomalous production of events containing a charged lepton ({ell}, either e or {mu}) and a photon ({gamma}), both with high transverse momentum, accompanied by additional signatures, X, including missing transverse energy (E{sub T}) and additional leptons and photons. They use the same selection criteria as in the previous CDF Run I search, but with an order-magnitude larger data set, a higher p{bar p} collision energy, and the CDF II detector.
Search For Gauge Mediated Susy Breaking In Diphoton Events In Proton Anti Proton Collisions At S 1 2
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Author :
language : en
Publisher:
Release Date : 2005
Search For Gauge Mediated Susy Breaking In Diphoton Events In Proton Anti Proton Collisions At S 1 2 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
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.
Search For Gauge Mediated Susy Breaking In Diphoton Events In Proton Anti Proton Collisions At S 1 2
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Author : Min Suk Kim
language : en
Publisher:
Release Date : 2004
Search For Gauge Mediated Susy Breaking In Diphoton Events In Proton Anti Proton Collisions At S 1 2 written by Min Suk Kim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
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.