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High Jet Multiplicity Physics at the LHC

2016-08-25 Science
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Release : 2016-08-25
Genre : Science
Kind : eBook
Book Rating : 616/5 ( reviews)

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Book Synopsis High Jet Multiplicity Physics at the LHC by : Mireia Crispín Ortuzar

Download or read book High Jet Multiplicity Physics at the LHC written by Mireia Crispín Ortuzar. This book was released on 2016-08-25. Available in PDF, EPUB and Kindle. Book excerpt: This book describes research in two different areas of state-of-the-art hadron collider physics, both of which are of central importance in the field of particle physics. The first part of the book focuses on the search for supersymmetric particles called gluinos. The book subsequently presents a set of precision measurements of “multi-jet” collision events, which involve large numbers of newly created particles, and are among the dominant processes at the Large Hadron Collider (LHC). Now that a Higgs boson has been discovered at the LHC, the existence (or non-existence) of supersymmetric particles is of the utmost interest and significance, both theoretically and experimentally. In addition, multi-jet collision events are an important background process for a wide range of analyses, including searches for supersymmetry.

High Multiplicity Searches at the LHC Using Jet Masses

2012
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Release : 2012
Genre :
Kind : eBook
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Book Synopsis High Multiplicity Searches at the LHC Using Jet Masses by :

Download or read book High Multiplicity Searches at the LHC Using Jet Masses written by . This book was released on 2012. Available in PDF, EPUB and Kindle. Book excerpt: This article introduces a new class of searches for physics beyond the Standard Model that improves the sensitivity to signals with high jet multiplicity. The proposed searches gain access to high multiplicity signals by reclustering events into large-radius, or 'fat', jets and by requiring that each event has multiple massive jets. This technique is applied to supersymmetric scenarios in which gluinos are pair-produced and then subsequently decay to final states with either moderate quantities of missing energy or final states without missing energy. In each of these scenarios, the use of jet mass improves the estimated reach in gluino mass by 20% to 50% over current LHC searches.

Jet Physics at the LHC

2016-10-11 Science
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Release : 2016-10-11
Genre : Science
Kind : eBook
Book Rating : 158/5 ( reviews)

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Book Synopsis Jet Physics at the LHC by : Klaus Rabbertz

Download or read book Jet Physics at the LHC written by Klaus Rabbertz. This book was released on 2016-10-11. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the latest experimental results on jet physics from proton-proton collisons at the LHC. Jets allow to determine the strong coupling constant over a wide range of energies up the highest ones possible so far, and to constrain the gluon parton distribution of the proton, both of which are important uncertainties on theory predictions in general and for the Higgs boson in particular.A novel approach in this book is to categorize the examined quantities according to the types of absolute, ratio, or shape measurements and to explain in detail the advantages and differences. Including numerous illustrations and tables the physics message and impact of each observable is clearly elaborated.

Jet physics in ALICE

2012-02-03 Science
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Release : 2012-02-03
Genre : Science
Kind : eBook
Book Rating : 577/5 ( reviews)

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Book Synopsis Jet physics in ALICE by : Constantin Loizides

Download or read book Jet physics in ALICE written by Constantin Loizides. This book was released on 2012-02-03. Available in PDF, EPUB and Kindle. Book excerpt: The ALICE experiment is one of the experiments currently prepared for the Large Hadron Collider (LHC) at CERN, Geneva, starting operation end of 2007. ALICE is dedicated to the research on nucleus-nucleus collisions at ultra-relativistic energies, which addresses the properties of strongly interacting matter under varying conditions of high density and temperature. The conditions provided at the LHC allow significant qualitative improvement with respect to previous studies. In particular, energetic probes, light quarks and gluons, will be abundantly produced. These probes might be identified by their fragmentation into correlated particles, so called jets, of high enough energy to allow full reconstruction of jet properties; even in the underlying heavy-ion environment.Understanding the dependence of high-energy jet production and fragmentation influenced by the dense medium created in the collision region is an open field of active research. Generally, one expects energy loss of the probes due to medium-induced gluon radiation. It is suggested that hadronization products of these, rather soft gluons may be contained within the jet emission cone, resulting in a modification of the characteristic jet fragmentation, as observed via longitudinal and transverse momentum distributions with respect to the direction of the initial parton, as well as of the multiplicity distributions arising from the jet fragmentation. Particle momenta parallel to the jet axis are softened (jet quenching), while transverse to it increased (transverse heating). The present thesis studies the capabilities of the ALICE detectors to measure these jets and quantifies obtainable rates and the quality of jet reconstruction, in both proton-proton and lead-lead collisions at the LHC. In particular, it is addressed whether modification of the jet fragmentation can be detected within the high-particle-multiplicity environment of central lead-lead collisions.

Very High Multiplicity Physics Workshops - Proceedings Of The Vhm Physics Workshops

2008-09-23 Science
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Release : 2008-09-23
Genre : Science
Kind : eBook
Book Rating : 831/5 ( reviews)

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Book Synopsis Very High Multiplicity Physics Workshops - Proceedings Of The Vhm Physics Workshops by : Alexey N Sissakian

Download or read book Very High Multiplicity Physics Workshops - Proceedings Of The Vhm Physics Workshops written by Alexey N Sissakian. This book was released on 2008-09-23. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume provides a comprehensive overview of the selected reports given at the International Workshops on Very High Multiplicity Physics from 2000 through 2007. These include results of original investigations dedicated to very high multiplicity processes, collective phenomena in quark gluon plasma, correlator analyses, polarization effects, and pion gas condensation, among others. The greater part of the material is devoted to basic technical aspects of the NICA/MPD project. Essential attention is paid to predictions of the multiperipheral model, perturbative QCD, physics of small x, and fractal analysis and statistical physics approaches to multiple production.The book is an important reference for physicists working in elementary particle physics. It is also a suitable read for undergraduate students.

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