Measurement Of Total And Differential Charm Cross Sections At 7 Tev With The Cms Detector

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Measurement Of Total And Differential Charm Cross Sections At 7 Tev With The Cms Detector

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Author : N. Z. B. Jombari
language : en
Publisher:
Release Date : 2022

Measurement Of Total And Differential Charm Cross Sections At 7 Tev With The Cms Detector written by N. Z. B. Jombari and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.

Charming Decays Of The Higgs Z And W Bosons

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Author : Spandan Mondal
language : en
Publisher: Springer Nature
Release Date : 2025-06-13

Charming Decays Of The Higgs Z And W Bosons written by Spandan Mondal and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-06-13 with Science categories.

This book presents searches for the Higgs boson, Z boson, and W boson decaying into charm quark(s) performed with proton-proton collision data at √s = 13TeV collected by the CMS experiment at the LHC, CERN, corresponding to an integrated luminosity of 138 fb−1 and recorded between 2016 and 2018. The searches are carried out using events in which the Higgs/Z/W boson is produced in association with a leptonically-decaying Z or W boson. This thesis also discusses a novel calibration algorithm for charm jet identification that enables maximal use of the available information related to charm jets. The new method is used to correct the entire distribution expected as output when jet flavour identification algorithms are applied to jets of different flavours. The calibrated results improve over traditional efficiency measurements and help enhance the sensitivities of the Higgs, Z, and W searches. This book primarily reports on the so-called resolved-jet topology of the Higgs/Z/W boson searches, where the boson candidates are reconstructed using two separate small-radius (AK4) jets. Upon statistically combining the results of the resolved-jet search with a complementary merged-jet approach, the observed (expected) upper limit on the Higgs decay to charm quarks corresponds to 14 (7.6) times the Standard Model expectation at the 95% CL which is the most stringent direct limit to date. A significance of 5.7σ (5.9σ) over the background-only prediction is observed (expected) in case of the search for charmed Z boson decays. Only the resolved-jet topology is used in the search for charmed W decays and the observed (expected) significance is 5.6σ (5.7σ) over the background-only prediction. These mark the first observations of charmed decays of the Z and W bosons at a hadron collider experiment.

Search For Supersymmetry In Hadronic Final States

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Author : Hannsjörg Artur Weber
language : en
Publisher: Springer
Release Date : 2015-06-11

Search For Supersymmetry In Hadronic Final States written by Hannsjörg Artur Weber and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-06-11 with Science categories.

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.

Associated Production Of W Charm In 13 Tev Proton Proton Collisions Measured With Cms And Determination Of The Strange Quark Content Of The Proton

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Author : Svenja Karen Pflitsch
language : en
Publisher: Springer Nature
Release Date : 2020-08-18

Associated Production Of W Charm In 13 Tev Proton Proton Collisions Measured With Cms And Determination Of The Strange Quark Content Of The Proton written by Svenja Karen Pflitsch and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-18 with Science categories.

The associated production of a W boson and a single charm quark (W+c) is the only process in proton-proton collisions that directly probes the strange quark content of the proton. In this thesis, W+charm production is measured in proton-proton collisions at the LHC at 13 TeV, as recorded by the Compact Muon Solenoid (CMS) experiment. The analysis focuses on the identification of W bosons in their leptonic decay to a muon and a neutrino and charm quarks are tagged via the full reconstruction of D*-Mesons. The measured cross sections of W+c production are used, in combination with other relevant CMS results and the most precise HERA DIS data, in a QCD analysis to determine the strange quark content of the proton. The resulting strange quark distribution and suppression, with respect to the other light sea quarks, are in good agreement with those obtained in neutrino scattering experiments and extend their kinematic reach.

Phenomenology Of Particle Physics

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Author : André Rubbia
language : en
Publisher: Cambridge University Press
Release Date : 2022-05-12

Phenomenology Of Particle Physics written by André Rubbia and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-05-12 with Science categories.

Addresses the theoretical and experimental phenomenology of particle physics for two-semester Masters and graduate courses.

High Energy Physics Index

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Author :
language : en
Publisher:
Release Date : 1994

High Energy Physics Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Particles (Nuclear physics) categories.

Energy Research Abstracts

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Author :
language : en
Publisher:
Release Date : 1987

Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Power resources categories.

Cern Courier

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Author :
language : en
Publisher:
Release Date : 2015

Cern Courier written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Nuclear energy categories.

Dissertation Abstracts International

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Author :
language : en
Publisher:
Release Date : 2006

Dissertation Abstracts International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Dissertations, Academic categories.

Physics Briefs

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Author :
language : en
Publisher:
Release Date : 1994

Physics Briefs written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Physics categories.