Study of Double Parton Scattering Using Four-Jet Scenarios

Study of Double Parton Scattering Using Four-Jet Scenarios PDF Author: Paolo Gunnellini
Publisher: Springer
ISBN: 3319222139
Category : Science
Languages : en
Pages : 290

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Book Description
This thesis addresses in a very new and elegant way several measurements and the extraction of so-called double parton scattering. The new and elegant way lies in the combination of measurements and a very smart extraction of double parton scattering results, which is easy to apply and overcomes many of the technical difficulties of older methods. Many new phenomena in particle physics can be observed when particles are collided at the highest energies; one of the highlights in recent years was the discovery of the Higgs boson at the Large Hadron Collider at CERN. Understanding the production mechanism of the Higgs boson at the LHC requires detailed knowledge of the physics of proton-proton collisions. When the density of partons in the protons becomes large, there is a non-negligible probability that more than one parton participates in the interaction and the so-called double parton scattering becomes important. In some cases very particular final state signatures can be observed, which can be regarded as an indication of such double partonic scattering and where the different interactions can be separated. Such multiple partonic interactions play an important role when precise predictions from known processes are required.

Study of Double Parton Scattering Using Four-Jet Scenarios

Study of Double Parton Scattering Using Four-Jet Scenarios PDF Author: Paolo Gunnellini
Publisher: Springer
ISBN: 3319222139
Category : Science
Languages : en
Pages : 290

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Book Description
This thesis addresses in a very new and elegant way several measurements and the extraction of so-called double parton scattering. The new and elegant way lies in the combination of measurements and a very smart extraction of double parton scattering results, which is easy to apply and overcomes many of the technical difficulties of older methods. Many new phenomena in particle physics can be observed when particles are collided at the highest energies; one of the highlights in recent years was the discovery of the Higgs boson at the Large Hadron Collider at CERN. Understanding the production mechanism of the Higgs boson at the LHC requires detailed knowledge of the physics of proton-proton collisions. When the density of partons in the protons becomes large, there is a non-negligible probability that more than one parton participates in the interaction and the so-called double parton scattering becomes important. In some cases very particular final state signatures can be observed, which can be regarded as an indication of such double partonic scattering and where the different interactions can be separated. Such multiple partonic interactions play an important role when precise predictions from known processes are required.

Higgs boson potential at colliders: status and perspectives

Higgs boson potential at colliders: status and perspectives PDF Author: Biagio Di Micco
Publisher: Roma TrE-Press
ISBN:
Category : Science
Languages : en
Pages : 281

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Book Description
Questo documento riassume lo stato attuale degli ricerche studi, teorici e sperimentali, sulla produzione di coppie di bosoni di Higgs, e sui vincoli, sia diretti che indiretti, al valore del termine di auto-interazione del bosone di Higgs, con l’intento di servire da referenza per i prossimi anni. Il documento discute lo stato degli studi teorici, includendo le più recenti stime della sezione di produzione di coppie di bosoni di Higgs, sviluppi sulle teorie di campo efficaci, e studi su specifici scenari di nuova fisica che possono contribuire alla produzione di due bosoni di Higgs. Sono presentati i più recenti risultati sperimentali sulle ricerche di coppie di bosoni di Higgs e sui limiti diretti e indiretti al termine di auto-interazione, ottenuti al Large Hadron Collider di Ginevra, con una panoramica delle tecniche sperimentali. Infine, sono discusse le capacità dei collisionatori futuri di determinare il termine di auto-interazione del bosone di Higgs. Questo lavoro è iniziato come raccolta di contributi della conferenza “Di-Higgs ai Colliders”, che ha avuto luogo a Fermilab dal 4 al 9 settembre 2018, ma gli argomenti discussi vanno al di là di quelli presentati alla conferenza, includendo ulteriori sviluppi.

Fundamental Interactions - Proceedings Of The 23rd Lake Louise Winter Institute 2008

Fundamental Interactions - Proceedings Of The 23rd Lake Louise Winter Institute 2008 PDF Author: Alan Astbury
Publisher: World Scientific
ISBN: 981446709X
Category : Science
Languages : en
Pages : 429

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Book Description
This book contains pedagogical lectures on both theoretical and experimental particle physics, cosmology, and atomic trap physics. Numerous additional contributions provide up-to-date information on new experimental results from accelerators, underground laboratories, and nuclear astrophysics. This combination of pedagogical talks and topical short discussions presents a comprehensive amount of information and latest developments to researchers.

Multiparticle Dynamics - Proceedings Of The Xxiii International Symposium

Multiparticle Dynamics - Proceedings Of The Xxiii International Symposium PDF Author: M M Block
Publisher: World Scientific
ISBN: 9814550841
Category :
Languages : en
Pages : 650

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Book Description
This international meeting on ultrahigh energy multiparticle phenomena started with a summary of neutrino physics, followed by a detailed review of LEP results. It moved on to the fast-breaking field of rapidity gaps, hard pomeron and small-x structure functions at both Hera and the FermiLab Tevatron. The major collider experiments at FermiLab, and in particular, the results of the top quark search were presented in complete detail. The fields of intermittency, multiplicities, correlation functions, heavy quarks, soft and semihard hadronic physics, and the particle physics aspects of cosmic rays were subjects of spirited debate.

Discovery Of The Higgs Boson

Discovery Of The Higgs Boson PDF Author: Aleandro Nisati
Publisher: World Scientific
ISBN: 981442546X
Category : Science
Languages : en
Pages : 470

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Book Description
The recent observation of the Higgs boson has been hailed as the scientific discovery of the century and led to the 2013 Nobel Prize in physics. This book describes the detailed science behind the decades-long search for this elusive particle at the Large Electron Positron Collider at CERN and at the Tevatron at Fermilab and its subsequent discovery and characterization at the Large Hadron Collider at CERN. Written by physicists who played leading roles in this epic search and discovery, this book is an authoritative and pedagogical exposition of the portrait of the Higgs boson that has emerged from a large number of experimental measurements. As the first of its kind, this book should be of interest to graduate students and researchers in particle physics.

Searches for Supersymmetric Particles in Final States with Multiple Top and Bottom Quarks with the Atlas Detector

Searches for Supersymmetric Particles in Final States with Multiple Top and Bottom Quarks with the Atlas Detector PDF Author: Chiara Rizzi
Publisher: Springer Nature
ISBN: 3030528774
Category : Science
Languages : en
Pages : 279

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Book Description
This PhD thesis documents two of the highest-profile searches for supersymmetry performed at the ATLAS experiment using up to 80/fb of proton-proton collision data at a center-of-mass energy of 13 TeV delivered by the Large Hadron Collider (LHC) during its Run 2 (2015-2018). The signals of interest feature a high multiplicity of jets originating from the hadronisation of b-quarks and large missing transverse momentum, which constitutes one of the most promising final state signatures for discovery of new phenomena at the LHC. The first search is focused on the strong production of a pair of gluinos, with each gluino decaying into a neutralino and a top-antitop-quark pair or a bottom-antibottom-quark pair. The second search targets the pair production of higgsinos, with each higgsino decaying into a gravitino and a Higgs boson, which in turn is required to decay into a bottom-antibottom-quark pair. Both searches employ state-of-the-art experimental techniques and analysis strategies at the LHC, resulting in some of the most restrictive bounds available to date on the masses of the gluino,neutralino, and higgsino in the context of the models explored.

Elementary Particle Physics

Elementary Particle Physics PDF Author: Yorikiyo Nagashima
Publisher: John Wiley & Sons
ISBN: 3527648909
Category : Science
Languages : en
Pages : 630

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Book Description
This second volume of Elementary Particle Physics, "Foundations of the Standard Model", concentrates on the main aspects of the Standard Model by addressing developments from its establishments to recent progress and some future prospects. Two subjects are clearly separated which cover dynamics of the electroweak and strong interactions, but basso continuo throughout the book is a bridge between theory and experiments. All the basic formulas are derived from the first principle, and corrections to meet the experimental accuracy are explained. This volume is a logical step up from volume I but can also be considered and used as an independent monograph for high energy and theoretical physicists, as well as astronomers, graduate students and lecturers in physics.

Canberra: The Greatest Multi-Role Aircraft of the Cold War (Volume 2)

Canberra: The Greatest Multi-Role Aircraft of the Cold War (Volume 2) PDF Author: Ken Delve
Publisher: Fonthill Media
ISBN:
Category : History
Languages : en
Pages : 744

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Book Description
An aviation legend designed in the mid-1940s, the Canberra entered service in 1951 with RAF Bomber Command. It served in the conventional, interdictor and nuclear bomber role with the RAF, in the UK, Germany, the Middle East and Far East. Its performance and adaptability made it ideal as a reconnaissance aircraft, and the final version, the Canberra PR9, only finally retired in July 2006! The Canberra was used in many support roles, especially in signals / electronic warfare. The Canberra was adopted by air forces from South America to Africa and India, as well as Australia and New Zealand, and license-built as the Martin B-57 served. It was involved conflicts from the Suez War and Malaya Confrontation, and various other hot spots with the RAF, to the Australian and USAF ops in Vietnam, and even the India-Pakistan War when both sides used Canberras, and the 1982 Falklands War. Used in trials and evaluation the Canberra held various height and speed records, and NASA’s High Altitude Research Program WB-57s are still active. The Canberra has also had dedicated enthusiasts, and aircraft (or cockpits) still survive in museums, as well as some in flying condition.

Fundamental Interactions

Fundamental Interactions PDF Author: A. Astbury
Publisher: World Scientific
ISBN: 9814280941
Category : Science
Languages : en
Pages : 429

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Book Description
This book contains pedagogical lectures on both theoretical and experimental particle physics, cosmology, and atomic trap physics. Numerous additional contributions provide up-to-date information on new experimental results from accelerators, underground laboratories, and nuclear astrophysics. This combination of pedagogical talks and topical short discussions presents a comprehensive amount of information and latest developments to researchers. Sample Chapter(s). Chapter 1: New Physics and the LHC (9,214 KB). Contents: New Physics and the LHC (G Altarelli); Very High Energy Cosmic Rays: Results from the Pierre Auger Observatory (C E Covault); Neutrinos at Lake Louise (S Davidson); Physics Impact of the Tevatron (D C O''Neil); Cosmology and the LHC (V Rubakov); CMK Angle Measurements from BABAR (J M Anderson); An Overview of Top Quark Analyses from the CMS Collaboration (J Andrea); Heavy Quark Production at HERA and Heavy Quark Contributions to the Proton Structure Function (D Bartsch); ATLAS Commissioning and Physics with Early Data (P J Bell); Search for Heavy Stable Charged Particles at CMS (J Chen); A High-Sensitivity Search for Charged Lepton Flavor Violation at Fermilab (E C Dukes); Prospects for CP Violation Studies at LHCb (V V Gligorov); Measurements of a 3 () at Belle (Y Horii); High P T Jets and Photons at Dy (Z Hubacek); SUSY Search at ATLAS (Y Kataoka); Neutrino Physics with the IceCube Detector (J Kirkyluk); Determination of the Strong Phase in D 0 OaAE K + C - Using Quantum-Correlated Measurements (A Lincoln); Results on Top Quark Physics at Dy (Y Peters); Quarkonium Production and Polarisation with Early Data at ATLAS (D D Price); and other papers. Readership: Graduate students, researchers and academics in high energy physics (HEP), astrophysics and atomic physics."

Federal Register

Federal Register PDF Author:
Publisher:
ISBN:
Category : Delegated legislation
Languages : en
Pages : 672

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Book Description