Inclusive Production Of Small Radius Jets In Heavy Ion Collisions

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Inclusive Production of Small Radius Jets in Heavy-ion Collisions

Author :
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (986 download)

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Download or read book Inclusive Production of Small Radius Jets in Heavy-ion Collisions written by and published by . This book was released on 2017 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here, we develop a new formalism to describe the inclusive production of small radius jets in heavy-ion collisions, which is consistent with jet calculations in the simpler proton-proton system. Only at next-to-leading order (NLO) and beyond, the jet radius parameter R and the jet algorithm dependence of the jet cross section can be studied and a meaningful comparison to experimental measurements is possible. We are able to consistently achieve NLO accuracy by making use of the recently developed semi-inclusive jet functions within Soft Collinear Effective Theory (SCET). Additionally, single logarithms of the jet size parameter [alpha]$n\atop{s}$lnnR leading logarithmic (NLLR) accuracy in proton-proton collisions. The medium modified semi-inclusive jet functions are obtained within the framework of SCET with Glauber gluons that describe the interaction of jets with the medium. We also present numerical results for the suppression of inclusive jet cross sections in heavy ion collisions at the LHC and the formalism developed here can be extended directly to corresponding jet substructure observables.

Looking Inside Jets

Author : Simone Marzani
Publisher : Springer
ISBN 13 : 3030157091
Total Pages : 205 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Looking Inside Jets by : Simone Marzani

Download or read book Looking Inside Jets written by Simone Marzani and published by Springer. This book was released on 2019-05-11 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: This concise primer reviews the latest developments in the field of jets. Jets are collinear sprays of hadrons produced in very high-energy collisions, e.g. at the LHC or at a future hadron collider. They are essential to and ubiquitous in experimental analyses, making their study crucial. At present LHC energies and beyond, massive particles around the electroweak scale are frequently produced with transverse momenta that are much larger than their mass, i.e., boosted. The decay products of such boosted massive objects tend to occupy only a relatively small and confined area of the detector and are observed as a single jet. Jets hence arise from many different sources and it is important to be able to distinguish the rare events with boosted resonances from the large backgrounds originating from Quantum Chromodynamics (QCD). This requires familiarity with the internal properties of jets, such as their different radiation patterns, a field broadly known as jet substructure. This set of notes begins by providing a phenomenological motivation, explaining why the study of jets and their substructure is of particular importance for the current and future program of the LHC, followed by a brief but insightful introduction to QCD and to hadron-collider phenomenology. The next section introduces jets as complex objects constructed from a sequential recombination algorithm. In this context some experimental aspects are also reviewed. Since jet substructure calculations are multi-scale problems that call for all-order treatments (resummations), the bases of such calculations are discussed for simple jet quantities. With these QCD and jet physics ingredients in hand, readers can then dig into jet substructure itself. Accordingly, these notes first highlight the main concepts behind substructure techniques and introduce a list of the main jet substructure tools that have been used over the past decade. Analytic calculations are then provided for several families of tools, the goal being to identify their key characteristics. In closing, the book provides an overview of LHC searches and measurements where jet substructure techniques are used, reviews the main take-home messages, and outlines future perspectives.

Detailed Characterization of Jets in Heavy Ion Collisions Using Jet Fragmentation Functions

Author : Frank Teng Ma
Publisher :
ISBN 13 :
Total Pages : 163 pages
Book Rating : 4.:/5 (865 download)

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Book Synopsis Detailed Characterization of Jets in Heavy Ion Collisions Using Jet Fragmentation Functions by : Frank Teng Ma

Download or read book Detailed Characterization of Jets in Heavy Ion Collisions Using Jet Fragmentation Functions written by Frank Teng Ma and published by . This book was released on 2013 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis the jet fragmentation function of inclusive jets with transverse momentum PT > 100 GeV/c in PbPb collisions is measured for reconstructed charged particles with PT > 1 GeV/c within the jet cone. A data sample of PbPb collisions collected in 2011 at a center-of-mass energy of [square root of]sNN = 2.76 TeV corresponding to an integrated luminosity of 150 [mu]b-1 is used. The results for PbPb collisions as a function of collision centrality are compared to reference distributions based on pp data collected at the same collision energy. A centrality-dependent modification of the fragmentation function is revealed. For the most central collisions a significant enhancement is observed in the PbPb/pp fragmentation function ratio for the charged particles with PT less than 3 GeV/c.

Basics of Perturbative QCD

Author : Yuri Dokshitzer
Publisher : Atlantica Séguier Frontières
ISBN 13 : 9782863321010
Total Pages : 286 pages
Book Rating : 4.3/5 (21 download)

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Book Synopsis Basics of Perturbative QCD by : Yuri Dokshitzer

Download or read book Basics of Perturbative QCD written by Yuri Dokshitzer and published by Atlantica Séguier Frontières. This book was released on 1991 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Quark-gluon Plasma Five

Author :
Publisher : World Scientific
ISBN 13 : 9814663719
Total Pages : 416 pages
Book Rating : 4.8/5 (146 download)

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Download or read book Quark-gluon Plasma Five written by and published by World Scientific. This book was released on 2016 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This is the fifth volume in the series on the subject of quark-gluon plasma, a unique phase created in heavy-ion collisions at high energy. It contains review articles by the world experts on various aspects of quark-gluon plasma taking into account the advances driven by the latest experimental data collected at both the Relativistic Heavy-Ion Collider (RHIC) and the Large Hadron Collider (LHC). The articles are pedagogical and comprehensive which can be helpful for both new researchers entering the field as well as the experienced physicists working on the subject."--

Mini-jet and Particle Production in Ultra-relativistic Heavy Ion Collisions

Author :
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Mini-jet and Particle Production in Ultra-relativistic Heavy Ion Collisions by :

Download or read book Mini-jet and Particle Production in Ultra-relativistic Heavy Ion Collisions written by and published by . This book was released on 1991 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mini-jet and particle production are studied in the framework of HIJING Monte Carlo model which can describe pp and p{bar p} collisions well from ISR to Fermilab Tevatron energies. Mini-jets are shown to have eminent contributions to particle production in ultra-relativistic heavy ion collisions. However, parton shadowing and jet quenching also have important effects and can be studied by single particle distributions. 19 refs., 5 figs.

Jet Quenching in Relativistic Heavy Ion Collisions at the LHC

Author : Aaron Angerami
Publisher : Springer Science & Business Media
ISBN 13 : 3319012193
Total Pages : 180 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Jet Quenching in Relativistic Heavy Ion Collisions at the LHC by : Aaron Angerami

Download or read book Jet Quenching in Relativistic Heavy Ion Collisions at the LHC written by Aaron Angerami and published by Springer Science & Business Media. This book was released on 2013-12-02 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the first measurements of jets in relativistic heavy ion collisions as reported by the ATLAS Collaboration. These include the first direct observation of jet quenching through the observation of a centrality-dependent dijet asymmetry. Also, a series of jet suppression measurements are presented, which provide quantitative constraints on theoretical models of jet quenching. These results follow a detailed introduction to heavy ion physics with emphasis on the phenomenon of jet quenching and a comprehensive description of the ATLAS detector and its capabilities with regard to performing these measurements.

Measurement of B-jet Shapes in Inclusive Jet Production in P Anti-p Collisions at S**ư

Author :
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Measurement of B-jet Shapes in Inclusive Jet Production in P Anti-p Collisions at S**ư by :

Download or read book Measurement of B-jet Shapes in Inclusive Jet Production in P Anti-p Collisions at S**ư written by and published by . This book was released on 2008 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the shapes of b-jets using 300 pb−1 of data obtained with the upgraded Collider Detector at Fermilab (CDF II) in p{bar p} collisions at center of mass energy √s = 1.96 TeV. This measurement covers a wide transverse momentum range, from 52 to 300 GeV/c. Samples of heavy-flavor enhanced jets together with inclusive jets are used to extract the average shapes of b-jets. The b-jets are expected to be broader than inclusive jets. Moreover, b-jets containing a single b-quark are expected to be narrower than those containing a b{bar b} pair from gluon splitting. The measured b-jet shapes are found to be significantly broader than expected from the pythia and HERWIG Monte Carlo simulations. This effect may arise from an underestimation of the fraction of b-jets originating from gluon splitting in these simulations.

Introduction to Relativistic Heavy Ion Physics

Author : Jerzy Bartke
Publisher : World Scientific
ISBN 13 : 9810212313
Total Pages : 239 pages
Book Rating : 4.8/5 (12 download)

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Book Synopsis Introduction to Relativistic Heavy Ion Physics by : Jerzy Bartke

Download or read book Introduction to Relativistic Heavy Ion Physics written by Jerzy Bartke and published by World Scientific. This book was released on 2009 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book attempts to cover the fascinating field of physics of relativistic heavy ions, mainly from the experimentalist's point of view. After the introductory chapter on quantum chromodynamics, basic properties of atomic nuclei, sources of relativistic nuclei, and typical detector set-ups are described in three subsequent chapters. Experimental facts on collisions of relativistic heavy ions are systematically presented in 15 consecutive chapters, starting from the simplest features like cross sections, multiplicities, and spectra of secondary particles and going to more involved characteristics like correlations, various relatively rare processes, and newly discovered features: collective flow, high pT suppression and jet quenching. Some entirely new topics are included, such as the difference between neutron and proton radii in nuclei, heavy hypernuclei, and electromagnetic effects on secondary particle spectra.Phenomenological approaches and related simple models are discussed in parallel with the presentation of experimental data. Near the end of the book, recent ideas about the new state of matter created in collisions of ultrarelativistic nuclei are discussed. In the final chapter, some predictions are given for nuclear collisions in the Large Hadron Collider (LHC), now in construction at the site of the European Organization for Nuclear Research (CERN), Geneva. Finally, the appendix gives us basic notions of relativistic kinematics, and lists the main international conferences related to this field. A concise reference book on physics of relativistic heavy ions, it shows the present status of this field.

Gauge/String Duality, Hot QCD and Heavy Ion Collisions

Author : Jorge Casalderrey-Solana
Publisher : Cambridge University Press
ISBN 13 : 1009403494
Total Pages : 469 pages
Book Rating : 4.0/5 (94 download)

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Book Synopsis Gauge/String Duality, Hot QCD and Heavy Ion Collisions by : Jorge Casalderrey-Solana

Download or read book Gauge/String Duality, Hot QCD and Heavy Ion Collisions written by Jorge Casalderrey-Solana and published by Cambridge University Press. This book was released on 2023-07-31 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Jets in Relativistic Heavy Ion Collisions

Author :
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Jets in Relativistic Heavy Ion Collisions by :

Download or read book Jets in Relativistic Heavy Ion Collisions written by and published by . This book was released on 1990 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several aspects of hard and semihard QCD jets in relativistic heavy ion collisions are discussed, including multiproduction of minijets and the interaction of a jet with dense nuclear matter. The reduction of jet quenching effect in deconfined phase of nuclear matter is speculated to provide a signature of the formation of quark gluon plasma. HIJING Monte Carlo program which can simulate events of jets production and quenching in heavy ion collisions is briefly described. 35 refs., 13 figs.

Study of Jet Shapes in Inclusive Jet Production in P Anti-p Collisions at S**(1/2)

Author :
Publisher :
ISBN 13 :
Total Pages : 31 pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Study of Jet Shapes in Inclusive Jet Production in P Anti-p Collisions at S**(1/2) by :

Download or read book Study of Jet Shapes in Inclusive Jet Production in P Anti-p Collisions at S**(1/2) written by and published by . This book was released on 2005 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Lectures on Particle Physics, Astrophysics and Cosmology

Author : Carlos Merino
Publisher : Springer
ISBN 13 : 331912238X
Total Pages : 491 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Lectures on Particle Physics, Astrophysics and Cosmology by : Carlos Merino

Download or read book Lectures on Particle Physics, Astrophysics and Cosmology written by Carlos Merino and published by Springer. This book was released on 2014-12-22 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume gathers the content of the courses held at the Third IDPASC School, which took place in San Martiño Pinario, Hospederia and Seminario Maior, in the city of Santiago de Compostela, Galiza, Spain, from January 21st to February 2nd, 2013. This school is the annual joint program of the International Doctorate Network in Particle Physics, Astrophysics, and Cosmology (IDPASC). The purpose of the school series is to present doctoral students from different universities and laboratories in Europe and beyond with a broad range of the latest results and current state of the art in the fields of Particle Physics, Astrophysics, and Cosmology, and to further introduce them to both the questions now posed by the potentials of physics and to challenges connected with current and future experiments – in particular, with the newly available energy ranges. Following these guidelines, the content of this third edition of the IDPASC School was jointly planned by the Academic Council and by the network’s International Committee, whose members ensure every year its timely formulation, keeping up with the constant evolution of these fields. The program covers a balanced range of the latest developments in these fields worldwide, with courses offered by internationally acknowledged physicists on the Basic Features of Hadronic Processes, Quantum Chromodynamics, Physics and Technology of ALICE, LHCb Physics-Parity Violation, the Higgs System in and beyond the Standard Model, Higgs Searches at the LHC, Theory and Experiments with Cosmic Rays, Numerical Methods and Data Analysis in Particle Physics, Theoretical Cosmology, and AdS/CFT Correspondence. Most of these courses were complemented by practical and discussion sessions.

Foundations of Perturbative QCD

Author : John Collins
Publisher : Cambridge University Press
ISBN 13 : 1139500627
Total Pages : 637 pages
Book Rating : 4.1/5 (395 download)

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Book Synopsis Foundations of Perturbative QCD by : John Collins

Download or read book Foundations of Perturbative QCD written by John Collins and published by Cambridge University Press. This book was released on 2011-04-28 with total page 637 pages. Available in PDF, EPUB and Kindle. Book excerpt: Giving an accurate account of the concepts, theorems and their justification, this book is a systematic treatment of perturbative QCD. It relates the concepts to experimental data, giving strong motivations for the methods. Ideal for graduate students starting their work in high-energy physics, it will also interest experienced researchers.

A Study of Jets at the STAR Experiment at the Relativistic Heavy Ion Collider Via Two-particle Correlations

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (69 download)

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Book Synopsis A Study of Jets at the STAR Experiment at the Relativistic Heavy Ion Collider Via Two-particle Correlations by :

Download or read book A Study of Jets at the STAR Experiment at the Relativistic Heavy Ion Collider Via Two-particle Correlations written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Jets have been studied in high energy heavy ion collisions by measuring the angular correlation between particles at high transverse momentum. Differences in the yield and shape of the angular correlations as a function of system size give information on the medium produced in the collision. Such modifications can be used to infer the presence of a Quark-Gluon Plasma phase, wherein parton degrees of freedom are manifest over nuclear rather than nucleonic scales. In the present work, two-particle correlations were studied in $d+Au$ and $Au+Au$ collisions at $\sqrt{s_{NN}}$ = 200 GeV measured by the STAR experiment at RHIC. The technique was extended to include pseudo-rapidity, permitting jets to be characterised in two-dimensions, and enabling the jet shape to be studied in greater detail. Corrections were developed for the incomplete detector acceptance and finite two-track resolution. Both unidentified and identified particle correlations were studied, using charged tracks and neutral strange particles $\Lambda, \overline{\Lambda}$, and $K^0_{Short}$ reconstructed from their characteristic $V$0 decay topology. The focus of the analysis was the correlation peak centred at zero azimuthal separation, which is significantly enhanced in central $Au+Au$ collisions compared to lighter systems. The modified peak was found to comprise a jet-like peak broadened in the pseudo-rapidity direction, sitting atop a long range pseudo-rapidity correlation. The former is suggestive of jet modification by the medium, and the latter may indicate a medium response to jets. Correlations with identified particles indicated the modified same side peak may in part be formed from particles originating from the underlying event.

Jets as a Probe of Dense Matter at RHIC.

Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (684 download)

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Book Synopsis Jets as a Probe of Dense Matter at RHIC. by :

Download or read book Jets as a Probe of Dense Matter at RHIC. written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jet quenching in the matter created in high energy nucleus-nucleus collisions provides a tomographic tool to probe the medium properties. Recent experimental results on jet production at the Relativistic Heavy-Ion Collider (RHIC) are reviewed. Jet properties in p+p and d+Au collisions have been measured, establishing the baseline for studying jet modification in heavy-ion collisions. Current progress on detailed studies of high transverse momentum production in Au+Au collisions is discussed, with an emphasis on dihadron correlation measurements.

Gribov Memorial Volume: Quarks, Hadrons And Strong Interactions - Proceedings Of The Memorial Workshop Devoted To The 75th Birthday Of V N Gribov

Download Gribov Memorial Volume: Quarks, Hadrons And Strong Interactions - Proceedings Of The Memorial Workshop Devoted To The 75th Birthday Of V N Gribov PDF Online Free

Author : Yuri L Dokshitzer
Publisher : World Scientific
ISBN 13 : 9814478148
Total Pages : 570 pages
Book Rating : 4.8/5 (144 download)

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Book Synopsis Gribov Memorial Volume: Quarks, Hadrons And Strong Interactions - Proceedings Of The Memorial Workshop Devoted To The 75th Birthday Of V N Gribov by : Yuri L Dokshitzer

Download or read book Gribov Memorial Volume: Quarks, Hadrons And Strong Interactions - Proceedings Of The Memorial Workshop Devoted To The 75th Birthday Of V N Gribov written by Yuri L Dokshitzer and published by World Scientific. This book was released on 2006-06-07 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vladimir Naumovich Gribov was one of the most outstanding theorists, a key figure in the creation of the modern elementary particle physics. His many discoveries are famous and well accepted by the physics community (Gribov-Regge theory of high energy hadron interactions, Gribov vacuum pole — Pomeron, Reggeon field theory, parton evolution equations, neutrino oscillations, Gribov copies in non-Abelian gauge field theories, etc.); Some of his ideas look unacceptable and strange at the first glance. Even at the second glance.Nowadays, under the weight of new theoretical developments and experimental results, his ideas are receiving the recognition they deserve. The Gribov Memorial Workshop, organized on his 75th birthday in Budapest, Hungary in 2005, clearly demonstrated the wealth and fertilization force of his ideas. Close colleagues, younger followers, world experts of the quark-hadron world have gathered together to display new angles of the Gribov heritage. And to remember the personality of a great man.This book collects the talks presented at, and contributed to, the Gribov-75 Memorial Workshop.