Full Download Heavy Quarkonium Production Phenomenology and Automation of One-Loop Scattering Amplitude Computations - Hua-Sheng Shao | ePub
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We identify projection operators for all channels of the factorized lp and nlp infrared safe short-distance partonic hard parts, and corresponding operator definitions of fragmentation functions. For the nlp, we focus on the contributions involving the production of a heavy quark pair, a necessary condition for producing a heavy quarkonium.
Production of quarkonium and heavy flavour in atlas maximiliano sioli (bologna university and infn) for the atlas collaboration hql 2016 –virginia tech –may 24th, 2016.
Ágnes mócsy, pratt institute, quarkonium production in elementary and heavy ion collisions, june 6-18 2011 bnl theory progress 10 - lattice qcd, potential models, effective field theories (eft) - spectral functions are calculated mass inverse size binding energy the heavy quark mass provides a hierarchy of different energy scales.
Abstract: open heavy flavors and quarkonia are unique probes of the hot–dense medium produced in heavy-ion collisions.
Oct 24, 2019 by discovering the heavy element strontium in the kilonova created by neutron star collisions manufacture heavy elements in the universe.
We study prompt hadroproduction of the charged bottomonium-like states $z_b^\pm (10610)$ and $z_b^\pm (10650)$, and the charged charmonium-like states $z_c^\pm (3900.
Spa, 6-8 march 2008 1 of 21 experimental aspects of heavy quarkonium production at the lhc aafke kraan infn pisa three days of strong interactions and astrophysics hlpw 2008.
Recent data from the tevatron collider have revealed that the production rate of prompt charmonium at large transverse momentum is orders of magnitude larger than the best theories of a few years ago had predicted. These surprising results can be understood by taking into account two recent developments that have dramatically revised the theoretical description of heavy-quarkonium production.
The first major conceptual advance in the new picture of heavy quarkonium production was the realization that fragmentation dominates at sufficiently large transverse momentum. Fragmentation is the formation of a hadron within a jet produced by a parton (quark, antiquark, or gluon) with large transverse momentum.
Using e + e − →j/ψ+x as a case study, we explicitly demonstrate that the perturbatively calculated cross section for heavy quarkonium production in terms of the nrqcd factorization formalism has large logarithms as the collision energy s≫m, the heavy quarkonium mass.
We calculate the o( 3 ) short-distance, qcd collinear-factorized coefficient functions for all partonic channels that include the production of a heavy quark pair.
We study the transfer of color between a heavy quark pair and an unpaired heavy quark or antiquark moving at a nonrelativistic velocity with respect to the pair. We find that the open heavy quark or antiquark can catalyze the transformation of the pair from octet representation at short distances to singlet at long distances. This process is infrared sensitive in general, and we exhibit double.
Heavy quarkonium: heavy quark as relatively localized heavy mass/charge center heavy quark in the pair’s rest frame is almost non-relativistic production of heavy quark pair could be perturbative top decays too quickly, strange is too light, charmonium ( ) + c¯c bottomonium ( ) b¯b why qcd is so hard to deal with?.
Introduction – heavy quarkonium production suppression of heavy quarkonium production in p+a: total production rate pt – spectrum xf (or y) distribution heavy quarkonium production in polarized p+a collisions transverse single spin asymmetry (or phenomenon) new and complimentary probe of small-x physics summary.
More explicitly, we systematically calculate the production of heavy charmonium and \[(c\barb)\]-quarkonium through the top quark semi-exclusive rare fcnc.
Heavy quarkonium production through the top quark rare decays via the channels involving flavor changing neutral currents juan-juan niu 1 lei guo 1 * hong-hao ma 2 and shao-ming wang 1 1 department of physics, chongqing university, chongqing, 401331, people’s republic of china.
Nov 5, 2020 since three spin −1/2 quarks can combine to produce a particle with spin of for this reason, quark color is sometimes called “strong charge.
Polarized heavy quarkonium production in the color evaporation model vincent cheung and ramona vogt phys.
Jun 12, 2020 nowadays, the only place top quarks can be produced and observed is in large the evidence for top-quark quadruplet production isn't strong.
Apr 5, 2016 but for elements that are heavy enough (heavier than zinc typically), fusing two lighter nuclei just won't do it efficiently enough to produce.
Recent measurements of heavy quarkonium production in au+au, p+au and p+p collisions at star.
Cross-section for double heavy quarkonium production in high energy electron -positron collisions.
About the authors this book focuses on the study of heavy quarkonium production at high-energy colliders as a useful tool to explain both the perturbative and non-perturbative aspects of quantum choromodynamics.
Oct 17, 2017 “thanks to this multi-messenger event, we know for a fact that neutron star mergers can produce heavy elements such as gold, silver and iron,.
We extend the nonrelativistic qcd (nrqcd) prediction for the production of heavy quarkonium with low transverse momentum in hadronic collisions by taking into account effects from all-order soft gluon resummation. Following the collins-soper-sterman formalism, we resum the most singular terms in the partonic subprocesses.
Heavy quarkonium production has been a powerful tool to test and challenge our understanding of strong interaction and qcd! j-parc program on heavy quarkonium production could provide very important contributions to the search of the true production mechanism of heavy quarkonia thank you!.
This book focuses on the study of heavy quarkonium production at high-energy colliders as a useful tool to explain both the perturbative and non-perturbative aspects of quantum choromodynamics. It provides the first comprehensive comparison between the theory and recent experiments and clarifies some longstanding puzzles in the heavy quarkonium.
As a manner complementary to studies of the direct exploration, the heavy quarkonium production in higgs boson decays might also be taking into consideration seriously in the proposed hl/he-lhc, cepc or ilc platforms. Continuous exploration on the search for h 0 → j / ψ γ and h 0 → υ (n s) γ have been carried out by atlas aad:2015sda.
The wave function of a quarkonium with l ¼ 1 is separated into the polarized components of l z ¼ ae1 and l z ¼ 0 in a sufficiently strong.
Abstract: heavy quarkonium production offers not only unique perspectives into the formation of qcd bound states, but also an excellent probe sensitive to both.
“quarkonium particles are produced in such a collision, when the kinetic energy of the projectiles is converted into matter.
A rigorous qcd analysis of the inclusive annihilation decay rates of heavy quarkonium states is presented.
A benchmark by which to judge the success of production theory but also serve as a guide for its evolution. 1 color singlet model one of the earliest attempts to explain heavy quarkonium production was the color singlet model (csm).
Pair production of heavy quarkonium and b c (*) mesons at hadron colliders rong li, yu-jie zhang, and kuang-ta chao phys.
While the high density of heavy quarks in central pb-pb collisions at lhc energies would allow for quarkonium production in later states of the qgp evolution.
Free pdf download heavy quarkonium production phenomenology and automation of one-loop scattering amplitude computations this book focuses on the study of the production of heavy quarconium in high-energy colliders as a useful tool for explaining the disturbing and non-disturbing aspects of quantum chromodynamics. This provides the first comprehensive comparison between theory and recent.
The theoretical description of heavy quarkonium production at high-energy p¯p and ep colliders is reviewed.
We want to establish factorization for exclusive production of heavy quarkonium factorization separation of short distance part (calculable in qcd perturbation theory) from long distance part long distance part contains the non-perturbative amplitude for a pair of heavy quarks to evolve into quarkonium h(and nothing else).
Zhongbo a heavy quarkonium is made of a heavy quark and its own antiquark.
Motivation - quarkonium one of the important predictions regarding a qgp concerns the j/ψ j/ψis rare, because charm quarks are comparatively heavy and can therefore only be produced in the beginning of a collision in a qgp the production of j/ψshould be suppressed and if one finds a decrease of these particles is it a hint for the existence.
Author(s): yuan, feng abstract: we formulate the single transverse spin asymmetry in heavy quarkoniumproduction in lepton-nucleon and nucleon-nucleon collisionsin the non-relativistic limit. We findthat the asymmetry is very sensitive to the production mechanism. The finalstate interactions with the heavy quark and antiquark cancel out among themselves whenthe pair are produced in a color.
Suppression of exited bottomonium states depend on event multiplicity. Bossu quarkonium production in heavy ion collisions at the lhc torino, 10/10/2017 17 / 20 jhep 04 (2014) 103 arxiv:1704.
Heavy quarkonium production in the framework of the nonrelativistic quantum chromody-namics and leading order of the parton reggeization approach at the tevatron and l hc colliders is discussed. The new results, which are reviewed in this report, include the comparison with recent data on c 12 production from atlas collaboration and special.
This report reviews the study of open heavy-flavour and quarkonium production in high-energy hadronic collisions, as tools to investigate fundamental aspects of quantum chromodynamics, from the proton and nucleus structure at high energy to deconfinement and the properties of the quark-gluon plasma. Emphasis is given to the lessons learnt from lhc run 1 results, which are reviewed in a global.
Heavy quarkonium production in ultraperipheral nuclear collisions is described within the qcd dipole formalism. Realistic quarkonium wave functions in the rest frame are calculated solving the schrödinger equation with a subsequent lorentz boost to high energy.
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