Search For Displaced Leptons In The E Final State At The Cms Experiment

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A Search For Displaced Leptons In The Atlas Detector

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Author : Lesya Horyn
language : en
Publisher: Springer Nature
Release Date : 2022-02-07

A Search For Displaced Leptons In The Atlas Detector written by Lesya Horyn and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-02-07 with Science categories.

This thesis presents a search for long-lived particles decaying into displaced electrons and/or muons with large impact parameters. This signature provides unique sensitivity to the production of theoretical lepton-partners, sleptons. These particles are a feature of supersymmetric theories, which seek to address unanswered questions in nature. The signature searched for in this thesis is difficult to identify, and in fact, this is the first time it has been probed at the Large Hadron Collider (LHC). It covers a long-standing gap in coverage of possible new physics signatures. This thesis describes the special reconstruction and identification algorithms used to select leptons with large impact parameters and the details of the background estimation. The results are consistent with background, so limits on slepton masses and lifetimes in this model are calculated at 95% CL, drastically improving on the previous best limits from the Large Electron Positron Collider (LEP).

Search For Displaced Leptons In The E Final State At The Cms Experiment

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Author : Bingxuan Liu
language : en
Publisher:
Release Date : 2016

Search For Displaced Leptons In The E Final State At The Cms Experiment written by Bingxuan Liu 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.

Hep2023

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Author : John Strologas
language : en
Publisher: Springer Nature
Release Date : 2025-07-07

Hep2023 written by John Strologas and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-07-07 with Science categories.

The proceedings of HEP 2023 - 40th Conference on Recent Developments in High Energy Physics and Cosmology invites scholars and experts in the fields of High Energy Physics, involved both in experimental and theoretical research, from various universities and institutions. The conference focuses on the more recent advancements in topics such as 'LHC experimental results', 'Astroparticle Physics', 'Cosmology', 'String Theory', 'Dark Matter' and others. The main goal of the conference is to present the related research work of the Greek scientific community, to promote the cooperation of experts and scholars in the field, to share the research achievements both on a national and international level. All accepted speakers were eligible to contribute to the Conference Proceedings on a voluntary basis. The HEP2023 Conference is organized by the Hellenic Society for the Study of High Energy Physics and is hosted by the University of Ioannina (5-7 April 2023).

Aspects Of Wimp Dark Matter Searches At Colliders And Other Probes

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Author : Enrico Morgante
language : en
Publisher: Springer
Release Date : 2017-10-05

Aspects Of Wimp Dark Matter Searches At Colliders And Other Probes written by Enrico Morgante and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-05 with Science categories.

This thesis covers several theoretical aspects of WIMP (weakly interacting massive particles) dark matter searches, with a particular emphasis on colliders. It mainly focuses on the use of effective field theories as a tool for Large Hadron Collider (LHC) searches, discussing in detail the issue of their validity, and on simplified dark matter models, which are receiving a growing attention from the physics community. It highlights the theoretical consistency of simplified models, which is essential in order to correctly exploit their potential and for them to be a common reference when comparing results from different experiments. This thesis is of interest to researchers (both theorists and experimentalists) in the field of dark matter searches, and offers a comprehensive introduction to dark matter and to WIMP searches for students and non-experts.

Search For Tt H Production In The H Bb Decay Channel

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Author : Marcel Rieger
language : en
Publisher: Springer Nature
Release Date : 2021-02-25

Search For Tt H Production In The H Bb Decay Channel written by Marcel Rieger and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-02-25 with Science categories.

In 1964, a mechanism explaining the origin of particle masses was proposed by Robert Brout, François Englert, and Peter W. Higgs. 48 years later, in 2012, the so-called Higgs boson was discovered in proton-proton collisions recorded by experiments at the LHC. Since then, its ability to interact with quarks remained experimentally unconfirmed. This book presents a search for Higgs bosons produced in association with top quarks tt̄H in data recorded with the CMS detector in 2016. It focuses on Higgs boson decays into bottom quarks H → bb̅ and top quark pair decays involving at least one lepton. In this analysis, a multiclass classification approach using deep learning techniques was applied for the first time. In light of the dominant background contribution from tt̄ production, the developed method proved to achieve superior sensitivity with respect to existing techniques. In combination with searches in different decay channels, the presented work contributed to the first observations of tt̄H production and H → bb̅ decays.

Lepton Photon Interactions At High Energies Lepton Photon 2017 Proceedings Of The 28th International Symposium

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Author : Wei Wang
language : en
Publisher: World Scientific
Release Date : 2020-02-27

Lepton Photon Interactions At High Energies Lepton Photon 2017 Proceedings Of The 28th International Symposium written by Wei Wang and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-02-27 with Science categories.

The latest of the 'Lepton Photon' symposium, one of the well-established series of meetings in the high-energy physics community, was successfully organized at the South Campus of Sun Yat-sen University, Guangzhou, China, from August 7-12, 2017, where physicists around the world gathered to discuss the latest advancements in the research field.This proceedings volume of the Lepton Photon 2017 collects contributions by the plenary session speakers and the posters' presenters, which cover the latest results in particle physics, nuclear physics, astrophysics, cosmology, and plans for future facilities.

The Physics Associated With Neutrino Masses

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Author : Diego Aristizabal Sierra
language : en
Publisher: Frontiers Media SA
Release Date : 2020-01-13

The Physics Associated With Neutrino Masses written by Diego Aristizabal Sierra and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-13 with categories.

This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.

Phenomena Beyond The Standard Model What Do We Expect For New Physics To Look Like

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Author : Roman Pasechnik
language : en
Publisher: Frontiers Media SA
Release Date : 2020-09-03

Phenomena Beyond The Standard Model What Do We Expect For New Physics To Look Like written by Roman Pasechnik and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09-03 with Science categories.

This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.

The Physics Of The Dark Photon

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Author : Marco Fabbrichesi
language : en
Publisher: Springer Nature
Release Date : 2020-11-23

The Physics Of The Dark Photon written by Marco Fabbrichesi and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-23 with Science categories.

This book is about the dark photon which is a new gauge boson whose existence has been conjectured. Due to its interaction with the ordinary, visible photon, such a particle can be experimentally detected via specific signatures. In this book, the authors review the physics of the dark photon from the theoretical and experimental point of view. They discuss the difference between the massive and the massless case, highlighting how the two phenomena arise from the same vector portal between the dark and the visible sector. A review of the cosmological and astrophysical observations is provided, together with the connection to dark matter physics. Then, a perspective on current and future experimental limits on the parameters of the massless and massive dark photon is given, as well as the related bounds on milli-charged fermions. The book is intended for graduate students and young researchers who are embarking on dark photon research, and offers them a clear and up-to-date introduction to the subject.

Novel Ideas For Accelerators Particle Detection And Data Challenges At Future Colliders

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Author : Alessandro Tricoli
language : en
Publisher: Frontiers Media SA
Release Date : 2023-07-21

Novel Ideas For Accelerators Particle Detection And Data Challenges At Future Colliders written by Alessandro Tricoli and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-07-21 with Science categories.