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Search for Heavy Long-lived Charged R-hadrons with the ATLAS Detector in 3.2 Fb-1 of Proton-proton Collision Data at [mml

2016
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Release : 2016
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Book Synopsis Search for Heavy Long-lived Charged R-hadrons with the ATLAS Detector in 3.2 Fb-1 of Proton-proton Collision Data at [mml by :

Download or read book Search for Heavy Long-lived Charged R-hadrons with the ATLAS Detector in 3.2 Fb-1 of Proton-proton Collision Data at [mml written by . This book was released on 2016. Available in PDF, EPUB and Kindle. Book excerpt: A search for heavy long-lived charged R -hadrons is reported using a data sample corresponding to 3.2 fb -1 of proton-proton collisions at s=13 TeV collected by the ATLAS experiment at the Large Hadron Collider at CERN. The search is based on observables related to large ionisation losses and slow propagation velocities, which are signatures of heavy charged particles travelling significantly slower than the speed of light. No significant deviations from the expected background are observed. Lastly, upper limits at 95% confidence level are provided on the production cross section of long-lived R -hadrons in the mass range from 600 GeV to 2000 GeV and gluino, bottom and top squark masses are excluded up to 1580 GeV, 805 GeV and 890 GeV, respectively.

Search for Heavy Long-lived Charged R-hadrons with the ATLAS Detector in 3.2 Fb-1 of Proton{u2013}proton Collision Data at

2016
Download Search for Heavy Long-lived Charged R-hadrons with the ATLAS Detector in 3.2 Fb-1 of Proton{u2013}proton Collision Data at PDF Online Free

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Release : 2016
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Book Synopsis Search for Heavy Long-lived Charged R-hadrons with the ATLAS Detector in 3.2 Fb-1 of Proton{u2013}proton Collision Data at by :

Download or read book Search for Heavy Long-lived Charged R-hadrons with the ATLAS Detector in 3.2 Fb-1 of Proton{u2013}proton Collision Data at written by . This book was released on 2016. Available in PDF, EPUB and Kindle. Book excerpt: A search for heavy long-lived charged R -hadrons is reported using a data sample corresponding to 3.2 fb -1 of proton–proton collisions at s=13 TeV collected by the ATLAS experiment at the Large Hadron Collider at CERN. The search is based on observables related to large ionisation losses and slow propagation velocities, which are signatures of heavy charged particles travelling significantly slower than the speed of light. No significant deviations from the expected background are observed. Lastly, upper limits at 95% confidence level are provided on the production cross section of long-lived R -hadrons in the mass range from 600 GeV to 2000 GeV and gluino, bottom and top squark masses are excluded up to 1580 GeV, 805 GeV and 890 GeV, respectively.

Search for Metastable Heavy Charged Particles with Large Ionisation Energy Loss in Pp Collisions at [arrow]"

2015
Download Search for Metastable Heavy Charged Particles with Large Ionisation Energy Loss in Pp Collisions at [arrow]

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Release : 2015
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Book Synopsis Search for Metastable Heavy Charged Particles with Large Ionisation Energy Loss in Pp Collisions at [arrow]" by :

Download or read book Search for Metastable Heavy Charged Particles with Large Ionisation Energy Loss in Pp Collisions at [arrow]" written by . This book was released on 2015. Available in PDF, EPUB and Kindle. Book excerpt: The many extensions of the Standard Model predict the existence of charged heavy long-lived particles, such as R-hadrons or charginos. If produced at the Large Hadron Collider, these particles should be moving non-relativistically and are therefore identifiable through the measurement of an anomalously large specific energy loss in the ATLAS pixel detector. Measuring heavy long-lived particles through their track parameters in the vicinity of the interaction vertex provides sensitivity to metastable particles with lifetimes from 0.6 ns to 30 ns. A search for such particles with the ATLAS detector at the Large Hadron Collider is presented, based on a data sample corresponding to an integrated luminosity of 18.4 fb-1 of pp collisions at [arrow]"=8 TeV. No significant deviation from the Standard Model background expectation is observed, and lifetime-dependent upper limits on R-hadrons and chargino production are set. Gluino R-hadrons with 10 ns lifetime and masses up to 1185 GeV are excluded at 95 % confidence level, and so are charginos with 15 ns lifetime and masses up to 482 GeV.

Search for Long-lived Charged Particles in Proton-proton Collisions at [math Display

2016
Download Search for Long-lived Charged Particles in Proton-proton Collisions at [math Display PDF Online Free

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Release : 2016
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Book Synopsis Search for Long-lived Charged Particles in Proton-proton Collisions at [math Display by :

Download or read book Search for Long-lived Charged Particles in Proton-proton Collisions at [math Display written by . This book was released on 2016. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented of a search for heavy stable charged particles produced in proton-proton collisions at √s = 13 TeV using a data sample corresponding to an integrated luminosity of 2.5 fb-1 collected in 2015 with the CMS detector at the CERN LHC. The search is conducted using signatures of anomalously high energy deposits in the silicon tracker and long time-of-flight measurements by the muon system. The data are consistent with the expected background, and upper limits are set on the cross sections for production of long-lived gluinos, top squarks, tau sleptons, and lepton-like long-lived fermions. These upper limits are equivalently expressed as lower limits on the masses of new states; the limits for gluinos, ranging up to 1610 GeV, are the most stringent to date. Furthermore, limits on the cross sections for direct pair production of long-lived tau sleptons are also determined.

Search for Excited Randall-Sundrum Gravitons with Semi-Leptonic Diboson Final States in 4.7 Fb-1 of Proton-Proton Collisions Using the ATLAS Detector at the Large Hadron Collider

2012
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Release : 2012
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Book Synopsis Search for Excited Randall-Sundrum Gravitons with Semi-Leptonic Diboson Final States in 4.7 Fb-1 of Proton-Proton Collisions Using the ATLAS Detector at the Large Hadron Collider by : Eric Lloyd Williams

Download or read book Search for Excited Randall-Sundrum Gravitons with Semi-Leptonic Diboson Final States in 4.7 Fb-1 of Proton-Proton Collisions Using the ATLAS Detector at the Large Hadron Collider written by Eric Lloyd Williams. This book was released on 2012. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation describes a search for resonant WW and WZ production in the lvjj decay channel using 4.701 fb-1 of sqrt(s) = 7 TeV LHC collision data collected by the ATLAS detector. Events with a single charged lepton, at least two jets and missing transverse energy are analyzed and no significant deviation from the Standard Model prediction is observed. Upper limits on the production cross section are interpreted as lower limits on the mass of a resonance and are derived assuming two warped extra-dimension production modes: the original Randall-Sundrum (RS1) model and the more recent "bulk" Randal-Sundrum (Bulk RS) model. The mass range for both models is excluded at 95% CL with a lower mass limit for an RS1 graviton of 936 GeV and 714 GeV for the Bulk RS graviton.

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