Theory Of Meson Production

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Physicists reveal connection between two nonperturbative

heavy meson production 25 September 2020, by Liu Jia Credit: Pixabay/CC0 Public Domain defined in heavy quark effective theory (HQET) is the basic nonperturbative input parameter, which

Vector meson production in ultraperipheral collisions

Vector meson production in ultraperipheral collisions: accessing the small-x gluon Heikki M antysaari Brookhaven National Laboratory Probing QCD in Photon-Nucleus Interactions at RHIC and LHC: the Path to EIC, February 14, 2017 Heikki M antysaari (BNL) UPC theory Feb 14, 2017 1 / 30

Distribution of K-Mesons Produced in High Energy Nuclear

As an example of the application of the K-meson production cross section we have considered the K-meson component in the extensive air-showers. A cascade theory of the cosmic-ray shower has been developed embracing the fact that the heavy mesons and hyperons cascade in the nucleus in a manner analogous to the pions and nucleons.

Elastic meson production and Compton scattering

Elastic meson production and Compton scattering1 M. Diehl Deutsches Elektronen-Synchroton DESY, 22603 Hamburg, Germany Email: [email protected] Abstract I discuss recent progress in the theory of exclusive meson production and Compton scattering, focusing on hard-scattering factorization and on the dipole formalism. 1 Introduction

Exclusive Production of Phi Vector Meson During HERA-II

2. Theory of Exclusive VM production in DIS Figure 1. Elastic vector meson production described by (a) perturbative quantum chromodynamics and (b) Regge theory. The reaction, → , can be represented in terms of a series of steps. In models based

Global analysis of charge exchange meson production at high

dominated by production and decays of mesons. Regge phenomenology underlies such processes and provides the theoretical framework for studying high energy scattering. Other high-energy pQCD frameworks used in exclusivereactions, such as GPDs, meson DAs, , require a hard interaction scale for factorization to hold [2].

30 YEARS LES IMMATÉRIAUX - meson press

Published­in 2015 by­meson­press,­Hybrid­Publishing­Lab,­ Centre­for­Digital­Cultures,­Leuphana­University­of­Lüneburg Design­concept:­Torsten­Köchlin,­Silke­Krieg The­print­edition­of­this­book­is­printed­by­Lightning­Source,­ Milton­Keynes,­United­Kingdom.­­ ISBN­(Print):­­978-3

Pure Pseudoscalar Theory of Meson Production

2. Meson production by nucleon-nucleon collisions 173 3. Discus,sion of result 179 Introduction and summary. THE theory of meson production by nucleon-nucleon collisions has engaged the attention of physicists during the past ten years. Early investigations of Heitler and Peng I reduced the problem of meson production to that

SLAC-PUB-2149 UCSC #76-048 May 1978 T/E Exclusive Vector

vectorzeson production by longitudinal and transverse virtual photons, % = 'L h,p + 'p> / ,(y$ + vp) , can be measured by observing the vector meson decay angles, if s-channel helicity conservation (SCHC) is assumed. This assumption is associated with diffractive p production. The extra degree of

Quarkonium and Bc meson production in heavy-ion collisions

in pure gauge theory experience at that point an effectively unscreened three-dimensional Coulomb field. Let us now consider J/~ production, first in had- ron-hadron collisions. The dominant mechanism [ 7 ] is hard parton-parton interaction, producing ce pairs. The subsequent resonant interaction of the ce system then leads to J/~' production.


meson production at high energy within QCD, restricting myself to the cases where either the photon virtuality Q2 or the vector meson mass M V is large while the squared momentum transfer tfrom the proton is small. I will high-light progress and problems in the theory of these processes, concerning issues

Meson Formation and the Geomagnetic Effects

on-the nature of the primary cosmic rays and on the mode of production of the meson component. The relevant arguments are first reviewed in a qualitative way and then elabor-ated by a quantitative analysis, which is not dependent upon any specific theory of meson production. Three main possibilities are discussed, the so-called proton, 'mixed

Dynamical coupled -channels study of meson production

Dynamical coupled -channels study of meson production reactions from [email protected] Hiroyuki Kamano (Excited Baryon Analysis Center, Jefferson Lab) MENU2010, May 31th -June 4th, 2010

Institute of Theoretical Physics, Shanghai Jiao Tong

DsJ(2317) meson and its production mechanism. esons produced during hadroniza. Figure 1. Time evolution of the DsJ(2317) meson abundance in central Au+Au collisions at s1/2 NN=200 GeV for different initial numbers of DsJ(2317) mesons produced from the quark-gluon plasma. [1] L. W. Chen, C. M. Ko, W. Liu, and M. Nielsen, nucl-th/07051697. III-7

Reaction Models of Electromagnetic Meson Production in the

Extensive data of electromagnetic production of , , , and ( N, ) Understand the structure of nucleon resonances ( ) Understand non-perturbative QCD : ΠConnement of constituent quarks ΠChiral dynamics of meson cloud of baryons

Analysis of X(3872) production via Heavy-Meson Effective Theory

arXiv:1608.08165v1 [hep-ph] 29 Aug 2016 Preprint number: XXXX-XXXX Analysis of X(3872)production via Heavy-Meson Effective Theory L. M. Abreu Instituto de F´ısica, Universidade Federal da Bahia

Dynamical coupled -channels analysis of meson production

Dynamical coupled-channels model of meson production reactions Singular!Singular! a a Dynamical coupled-channels model @ EBAC N* spectrum, structure, 7N* spectrum, structure, 7 Meson production dataMeson production data Reaction mechanism Maintain coupled-channels unitarity of Can treat 3-body unitary cut

Prepared for submission to JHEP E ective eld theory approach to heavy quark fragmentation Michael Fickinger,a Sean Fleming,b Chul Kim,c Emanuele Mereghettid aPRISMA Cluster of Exc

Dynamical model of meson production -

electromagnetic meson production reaction Objective: † Extract N⁄;¢ properties from meson production cross section † Interpret N ⁄;¢ parameters in terms of hadron models, Lattice QCD Understand nonperturbative dynamics (conflnement, chiral dynamics) of QCD in hadron structure and reactions


The rich experimental landscape of exclusive vector meson production at the high energy electron proton collider HERA is reviewed, with emphasis on the transition from soft to hard diffraction and QCD interpretations. 1 Introduction Vector meson (VM) production at HERA is illustrated in Fig. 1(left): the intermediate photon converts

Part I. Bilocal field theory and a model for meson

Part I. Bilocal field theory and a model for meson spectroscopy, Part II. Trident production by high energy charged particles on nuclei Katsunori Mita Iowa State University Follow this and additional works at: Part of theElementary Particles and Fields and String Theory Commons


The elucidation of processes involving the production of many mesons is an inescapable requirement of any theory of relativistic quantum physics. Field theory can provide the conceptual framework for such an understanding, and has recently served as the basis of some rather interesting speculations 1,2,3,4 con-


Measurement of the Cross Section and Double Spin Asymmetries in Vector Meson Production in Polarised Lepton Nucleon Scattering at HERMES D i s s e r t a t i o n zur Erlangu

Charm Meson Production from Meson-nucleon Scattering

Using for charm meson production thus seems reasonable. Λ=2 Λ=0.5 πN→KΛ Λ=0.4 Λ=1GeV Since our cross sections for charm meson production are much larger than that given by the QGSM model, they would lead to too large an enhancement of charm meson production if used during the initial string stage of heavy ion collisions as in Ref. [2

Meson electro-/photo-production from QCD

Meson electro-/photo-production from QCD Raul A. Briceno~1, 1 Thomas Je erson National Accelerator Facility, 12000 Je erson Avenue, Newport News, VA 23606, USA Department of Physics, Old Dominion University, Norfolk, VA 23529, USA

23ptVector Meson Production from Gauge/Gravity Duality

Vector Meson Production from Gauge/Gravity Duality Marko Djuri c University of Porto work with Miguel S. Costa and Nick Evans Gauge/Gravity 2013, Munchen, Tuesday, July 30, 2013

Energy and System Size Dependence of ϕ Meson Production in Cu

Theory Commons, and theNuclear Commons size dependence of ϕ meson production in Cu + Cu and Au + Au and collisions.Physics Letters B, 673(3), 183-191.

Theory of vector meson production - COnnecting REpositories

Theory of V ector Meson Pro duction J.R. F orsha w 1 Rutherford Appleton Lab oratory, Chilton, Didcot O X11 0QX, England. Abstract I discuss the theoretical status of the `soft' p omeron and its place in describing generic di ractiv e pro cesses. The role of p erturbativ e QCD (pQCD) corrections is considered, in particular in the con text of

The 1D Meson and Ground Baryon Structure from JLab Experiments

Meson Production and Form Factors 1984 1997 2003 2004 2017+ JLab 6 GeV JLab 12 GeV 1971 1976 1979 1981 1986 EIC 1959 2025+ Theory Extraction of meson form factor from data Electroproduction formalism Accessing the form factor through electroproduction Experiment Major progress on hadron structure calculations (also lattice and global

D-meson production according to the parton model and their

the theory of partons and their bindings. This theory was expanded by Bjorken and Paschos[9]. It was the birth of the parton model. The 1970 s was the decade of QCD, quantum chromodynamics, the field theory of quarks and gluons, which bind the quarks to make par-ticles. There was no single person behind the QCD, but a large group of physicists.

Theory of Ultra Peripheral Collisions

Theory of Ultra Peripheral Collisions Victor P. Goncalves High and Medium Energy Group Federal University of Pelotas (UFPel) Brazil Chia - Sardegna 06 Sept 2019 Second LHCb Heavy Ion Workshop: Exploring matter with precision charm and bottom production measurements in Heavy Nuclei Collisions

Effective Theories of Dark Mesons

A Strongly-Coupled Theory For now, imagine an SU(N)* gauge theory that confines at ⇤ dark ⇠ 4⇡f *(N > 2) with several flavors of dark fermions that transform under the electroweak part of the Standard Model. Emphasize: Mesons transform in electroweak multiplets. The dark fermions have masses M f < 4⇡f

Meson-induced Quarkonium Production

New territory for theory and e r xperiment * Unique opportunities at COMP u ASS, JLab, J-P Meson pa A rton distributions represent / production provides useful C r R , and i EI info mat on on meson q a C

Deeply Virtual Compton Scattering and Exclusive Meson Production

Vector meson production by longitudinal virtual photons selects only the GPDs Hf and Ef while scalar meson pro-duction selects the GPDs H˜ f and E˜f. In contrast to DVCS both quark and gluon GPDs contribute to the meson pro-duction at the same order in αS. Decomposition on quark flavor and gluon contributions can be realized through the

Neutrino Induced Meson Production Reaction on Nucleon and

Model of weak meson production reactions including two-pion production channel for W<2GeV, Q 2<3 GeV is developed vector current is obtained from the analysis of electron and photon induced reactions. axial vector current is constructed using PCAC (Dipole form factor is assumed) The model smoothly connects DIS and RES(em) regions

Extraction of N-N* electromagnetic transition form factors

and meson-baryon channel 3) Extract resonance parameters defined by poles. Mass spectrum Partial decay widths 1) Construct a model by making χ-fit of the world data of meson production reactions. Use supercomputers to accomplish coupled-channels analyses: Latest published model (8-channel): Made simultaneous analysis of


VECTOR MESON PRODUCTION AND THE DIPOLE PICTURE IN PHOTON-HADRON SCATTERING A Thesis in Physics by Ted C. Rogers c 2006 Ted C. Rogers Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy August 2006


After a brief description of theory and terminology, we dis-cuss b-quark production and current results on spectroscopy and lifetimes of b-flavored hadrons. We then discuss some ba-sic properties of B-meson decays, followed by summaries of hadronic, rare, and electroweak penguin decays of B-mesons.


of Yukawa's theory. Thus, the n-meson has the correct mass to give rise to the observed short range of nuclear forces. Also, the n-meson interacts strongly with nucleons. Quanti-tatively, however, the Yukawa theory and experiment seemed to disagree in every aspect. This failure of Yukawa's theory can be ascribed to the methods of calculation.