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| Total Pages | : 6 |
| Release | : 2007 |
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Download Searches in Photon and Jet States Book in PDF, ePub and Kindle
The authors present recent results from the Collider Detector at Fermilab (CDF) and D0 experiments using data from proton-antiproton collisions with (square root)s = 1.96 TeV at Run II of the Fermilab Tevatron. New physics may appear in events with high transverse momentum objects, including photons and quark or gluon jets. The results described here are of signature-based searches and model-based searches probing supersymmetry, leptoquarks, 4th generation quarks, and large extra dimensions.
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| Total Pages | : 7 |
| Release | : 2009 |
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Download Searches for New Physics at the Tevatron in Photon and Jet Final States Book in PDF, ePub and Kindle
We present the results of searches for non-standard model phenomena in photon and jet final states. These searches use data from integrated luminosities of 0.7-2.7 fb−1 of p{bar p} collisions at (square root)s = 1.96 TeV, collected with the CDF and D0 detectors at the Fermilab Tevatron. No significant excess in data has been observed. We report limits on the parameters of several models, including: large extra dimension, compositeness, leptoquarks, and supersymmetry.
| Author | : Giuliano Gustavino |
| Publisher | : Springer |
| Total Pages | : 245 |
| Release | : 2017-06-19 |
| Genre | : Science |
| ISBN | : 3319588710 |
Download Search for New Physics in Mono-jet Final States in pp Collisions Book in PDF, ePub and Kindle
This thesis provides a detailed and comprehensive description of the search for New Physics at the Large Hadron Collider (LHC) in the mono-jet final state, using the first 3.2 fb-1 of data collected at the centre of mass energy of colliding protons of 13~TeV recorded in the ATLAS experiment at LHC. The results are interpreted as limits in different theoretical contexts such as compressed supersymmetric models, theories that foresee extra-spatial dimensions and in the dark matter scenario. In the latter the limits are then compared with those obtained by other ATLAS analyses and by experiments based on completely different experimental techniques, highlighting the role of the mono-jet results in the context of dark matter searches.Lastly, a set of possible analysis improvements are proposed to reduce the main uncertainties that affect the signal region and to increase the discovery potential by further exploiting the information on the final state.
| Author | : Dustin Ouray Kiefer Stolp |
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| Release | : 2017 |
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| ISBN | : 9780355763430 |
Download A Search for Dark Photons in the Photon + Jet Final State with the CMS Detector at the LHC Book in PDF, ePub and Kindle
I present in this document an analysis searching for Dark Photons using the Compact Muon Solenoid detector at the Large Hadron Collider. The Dark Photon for this analysis is assumed to be low mass (m[subscript D]
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| Total Pages | : 7 |
| Release | : 2008 |
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Download Search for Large Extra Dimensions in Final States Containing One Photon Or Jet and Large Missing Transverse Energy Produced in P Anti-p Collisions at S**1/2 Book in PDF, ePub and Kindle
The authors present the results of searches for large extra dimensions in samples of events with large missing transverse energy E{sub T} and either a photon or a jet produced in p{bar p} collisions at √s = 1.96 TeV collected with the CDF II detector. For [gamma] + E{sub T} and jet + E{sub T} candidate samples corresponding to 2.0 fb−1 and 1.1 fb−1 of integrated luminosity respectively, they observe good agreement with standard model expectations and obtain a combined lower limit on the fundamental parameter of the large extra dimensions model, M{sub D}, as a function of the number of extra dimensions in the model.
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| Total Pages | : 7 |
| Release | : 2008 |
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Download Search for Large Extra Dimensions in Final States Containing One Photon Or Jet and Large Missing Transverse Energy Produced in P Anti-p Collisions at S**ư Book in PDF, ePub and Kindle
The authors present the results of searches for large extra dimensions in samples of events with large missing transverse energy E{sub T} and either a photon or a jet produced in p{bar p} collisions at √s = 1.96 TeV collected with the CDF II detector. For? + E{sub T} and jet + E{sub T} candidate samples corresponding to 2.0 fb−1 and 1.1 fb−1 of integrated luminosity respectively, they observe good agreement with standard model expectations and obtain a combined lower limit on the fundamental parameter of the large extra dimensions model, M{sub D}, as a function of the number of extra dimensions in the model.
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| Total Pages | : 216 |
| Release | : 2011 |
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Download Search for Anomalous Production of Photon + Jets + Missing Transverse Energy in $p\bar{p}$ Collisions at $\sqrt{s} Book in PDF, ePub and Kindle
A model-independent signature-based search for physics beyond the Standard Model is performed in the photon~+ jets~+ missing transverse energy channel in \ppbar collisions at a center of mass energy of 1.96 TeV using the CDF II detector. Events with a photon + jets are predicted by the Standard Model and also by many theoretical models beyond the Standard Model. In the Standard Model, the main mechanisms for photon~+ jets production include quark-antiquark annihilation and quark-gluon scattering. No intrinsic missing transverse energy is present in any of these Standard Model processes. In this search, photon~+ $\geq$1 jet and photon~+ $\geq$2 jet events are analyzed with and without a minimum requirement on the missing transverse energy. Numerous mass distributions and kinematic distributions are studied and no significant excess over the background prediction is found. All results indicate good agreement with expectations of the Standard Model.
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| Total Pages | : 18 |
| Release | : 2008 |
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Download Light Stop Searches at the LHC in Events with One Hard Photon Or Jet and Missing Energy Book in PDF, ePub and Kindle
| Author | : Hannsjörg Artur Weber |
| Publisher | : Springer |
| Total Pages | : 217 |
| Release | : 2015-06-11 |
| Genre | : Science |
| ISBN | : 3319199560 |
Download Search for Supersymmetry in Hadronic Final States Book in PDF, ePub and Kindle
The project reported here was a search for new super symmetric particles in proton-proton collisions at the LHC. It has produced some of the world’s best exclusion limits on such new particles. Furthermore, dedicated simulation studies and data analyses have also yielded essential input to the upgrade activities of the CMS collaboration, both for the Phase-1 pixel detector upgrade and for the R&D studies in pursuit of a Phase-2 end cap calorimeter upgrade.
| Author | : Giovanni Petrucciani |
| Publisher | : Springer |
| Total Pages | : 232 |
| Release | : 2014-12-04 |
| Genre | : Science |
| ISBN | : 8876424822 |
Download Observation of a New State in the Search for the Higgs Boson at CMS Book in PDF, ePub and Kindle
This book describes the searches that lead to the discovery of a Higgs boson performed at CMS, one of the two main experiments at the CERN LHC. After an overview of the theory and of the CMS experiment, all search channels are described, with emphasis on the ones with the best sensitivity. The statistical methodology used to analyse and the outcomes of the searches and the discovery results are then presented in detail.
