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2 edition of measurement of the diffractive proton structure function at HERA found in the catalog.

measurement of the diffractive proton structure function at HERA

Timothy Christopher Nicholls

# measurement of the diffractive proton structure function at HERA

Written in English

Edition Notes

Thesis (Ph.D) - University of Birmingham, School of Physics and Space Research, Faculty of Science, 1998.

 ID Numbers Statement by Timothy Christopher Nicholls. Open Library OL18048482M

HERA pioneered high-energy collisions of longitudinally polarized electron and positron beams with unpolarized proton beams. The HERA Measurement of Spin (HERMES) fixed-target experiment pioneered the measurement of pure lepton-hadron scattering, without any complication from extraneous material or end-windows. 3/17/06 Abhay Deshpande 11 Polarized DIS at eRHIC • Spin structure functions g1 (p,n) at low x, high precision-- g1(p-n): Bjorken Spin sum rule % accuracy • Polarized gluon distribution function ΔG(x,Q2)*-- at least three different experimental methods • Precision measurement of α S(Q2) from g1 scaling violations • Spin structure of the photon from photo-production. Experiment E studied proton and nuclear structure using a high energy muon beam. Protons and neutrons are composed of partons; about half the momentum of a proton is carried by charged spin-1/2 quarks and the rest by neutral spin-1 gluons. Protons contain 3 valence quarks, which determine the quantum numbers of the proton, such as charge. However, in high energy . colliding electrons from the planned linear collider TESLA with protons from HERA. The THERA Book Diffractive Production of Vector Mesons at THERA My contribution to the THERA Book (DESY-LC-REV ()) LANL Preprint hep-ex/ [abs, src, ps, other] General Electron-Proton Scattering at sqrt(s) = 1 TeV: Report from the THERA Study Group.

Welcome to the 27th Workshop on Deep-Inelastic Scattering and Related Subjects - DIS The meeting will cover a broad spectrum of topics in high energy physics. A significant part of the program is devoted to the most recent results from large experiments at BNL, CERN, DESY, FNAL, JLab and KEK, together with the relevant theoretical advances.

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### measurement of the diffractive proton structure function at HERA by Timothy Christopher Nicholls Download PDF EPUB FB2

This paper presents the first analysis of diffractive photon dissociation events in deep inelastic positron-proton scattering at HERA in which the proton in the final state is detected and its momentum measured.

The events are selected by requiring a scattered proton in the ZEUS leading proton spectrometer (LPS) with χ L >where xL is the fraction of the Cited by: The open-charm contribution, F 2 D(3),c c ̄, to the diffractive proton structure function has been extracted.

For all values of Q 2 and x P, F 2 D(3),c c ̄ rises as β decreases. The results have been compared with the theoretical F 2 D(3),c c ̄ obtained using the ACTW NLO calculations with the gluon-dominated fits B, D and by: The diffractive structure function is measured as a function ofx ℙ, the momentum fraction lost by the proton, of β, the momentum fraction of the struck quark with respect tox ℙ, and ofQ 2 in the range 10 −4 Cited by: Diffractive photoproduction of dijets was measured with the ZEUS detector at the ep collider HERA using an integrated luminosity of pb The measurements were made in.

A measurement of the T dependence of the helicity structure of diffractive ρ meson electroproduction at HERA Article in Physics Letters B July with 38 Reads How we measure 'reads'. tract the diffractive longitudinal structure function FD L in the range of photon virtualities ≤Q2 ≤GeV2 and frac-tional proton longitudinal momentum loss 5×10−4 ≤xP ≤ a e-mail: [email protected] bAlso at Physics Department, National Technical University, Zografou Campus, Athens, Greece.

@article{osti_, title = {New measurements of proton polarized structure functions in charged current processes at DESY HERA}, author = {Anselmino, M and Gambino, P and Kalinowski, J}, abstractNote = {Predictions for longitudinal spin asymmetries which single out new polarized nucleon structure functions in deeply inelastic charged current.

D∗ meson production cross sections have been measured in deep inelastic ep scattering at HERA. Using an integrated luminosity of 37 pb−1, the ZEUS col Author: D.S Bailey. Derrick, D. Krakauer, S. Magill, B. Musgrave, J. Repond, S.

Repond, R. Stanek, R. Talaga, J. Thron, F. Arzarello, R. Ayad, G. Bari, M. Basile, L. Bellagamba, D Cited by: Measurement of the Diffractive Deep­Inelastic Scattering Cross Sections with a Leading Proton at HERA Richard Polifka Charles University in Prague On behalf of the H1 Collaboration Inclusive DIS Cross Sections Dijet Cross Sections DISNewport News.

Abstract: The cross section of inclusive diffractive process ep -> eXp was measured within measurement of the diffractive proton structure function at HERA book wide kinematic range in the Measurement of the diffractive proton structure function at HERA book and ZEUS experiments at HERA.

Results obtained by different experiments and methods are compatible within measurement uncertainties. The measurements were subjected to DGLAP next-to-leading order QCD global fits and the Cited by: 1. Diffractive dissociation of quasi-real photons at a photon-proton centre of mass energy of W >> GeV is studied with the ZEUS detector at HERA.

The process under consideration is {gamma}{rho}{yields} XN, where X is the diffractively dissociated photon system of mass MX and N is either a proton or a nucleonic system with mass MN. Deep Inelastic Scattering and Related Phenomena: Authors: D New Results on F 2 Structure Functions * Measurement of the diffractive proton structure function at HERA book Structure Function and Gluon Distribution Functions from Fermilab Scattering and Photoproduction at HERA * Measurement of the Diffractive Cross-Section in Deep Inelastic Scattering * Deep Inelastic Diffractive Results.

The cross section for the diffractive deep-inelastic scattering process $ep \to e X p$ measurement of the diffractive proton structure function at HERA book measured, with the leading final state proton detected in the H1.

If the address matches an existing account you will receive an email with instructions to reset your password. scattering (DIS) at HERA are presented. The process studied is of the type ep → eXY, where the central hadronic system X contains at least two jets and is separated from the system Y by a gap in rapidity.

The forward system Y consists of an elastically scattered proton or a low mass dissociation system. New Resonances in the Hadronic Final State at HERA (K Tokushuku) Hadron Systematics and Emergent Diquarks (F Wilczek) Importance of a Measurement of F L (X,Q 2) at HERA (R Thorne) Measurement of the Longitudinal Proton Structure Function at Low x at HERA (J Feltesse) HERA and the LHC (A De Roeck) and other papers.

A large part of the diffractive data at HERA can be characterized by the 2, which describes the process γ ∗p → p′X diffractive structure function F D (cf. High-Energy Scattering and Diffraction: Theory Summary. * Measurement of Neutral and Charged Current Cross Sections at High Q 2 * Neutral and Charged Current DIS Cross Sections at High Q 2 from ZEUS at HERA * Measurement and Phenomenology of the Proton Structure Function F 2 from ZEUS at HERA * Precision Measurement of the Inclusive Deep Inelastic ep Scattering Cross Section at Low Q 2 * Test of Author: Alan Astbury, David Axen, Jacob Robinson.

Measurement of the Cross Section and t Distribution in Diffractive Deep Inelastic Scattering at HERA A diHwrtotion tnihmittod in partial saiisfaction of the reqnirements ft>r tb«dKgnw of DOCTOR OF PHILOSOPHY PHYSICS hy EMANUELA BARBERIS Jnly Abstract Diffrartiw evwnLs in proton-positron dw*p intdatttic smttering ar*> studiert at HERA Author: Emanuela Barberis.

Measurement of diffractive photoproduction of vector mesons at large momentum transfer at HERA Measurement of the proton structure function F2 at very low Q2 at HERA Breitweg, J., Chekanov, S., Derrick, M., Krakauer, D Study of the effective transverse momentum of partons in the proton using prompt photons in photoproduction at HERA.

Proton Structure and QCD tests at HERA 4th Particle Physics Workshop National Center for Physics, Islamabad Part 2 Jan Olsson, The proton structure function F.

The Table of Contents for the book is as follows: * VOLUME I * Foreword * Conference Organization * Welcome Address * PLENARY SESSIONS * Pl New Results in Spectroscopy * New Results in Spectroscopy * Pl Soft Interactions and Diffraction Phenomena * Soft Interactions and Diffraction Phenomena * Pl Spin Structure of the Nucleon * Spin.

Diffractive Cross-Section and Diffractive Structure Functions Bernd Löhr, DESY Page 28 4 em 2D(4)2 IP IP dó 2 á = [1-(1-y) ] F (Q,t,x,â) dQ dtdx dâ âQ Contribution from longitudinal structure function neglected by ZEUS H1 defines: 2 DD D r2 L2 y ó = F F 1+(1-y) QCD factorization for diffractive DIS processes: diff diff 2 qIPpQCD.

structure functionat HERA ZEUS Collaboration Abstract The reduced cross sections for ep deep inelastic scattering have been measured with the ZEUS detector at HERA at three diﬀerent centre-of-mass energies,and GeV. From the cross sections, measured double diﬀerentially in Bjorken x and the virtuality, Q2, the proton structure.

John Adams Institute for Accelerator Science. Department of Physics; Profile; Researchers; Publications; Projects; Measurement of the proton structure function F2 at very low Q2 at HERA Breitweg, J., Chekanov, S Measurement of the Q and energy dependence of diffractive interactions at HERA Chekanov, S., Krakauer, D., Magill, S.

The HERA electron--proton collider has collected pb$^{-1}$ of data since its start-up inand recently moved into a high-luminosity operation mode, with upgraded detectors, aiming to increase the total integrated luminosity per experiment to more than pb$^{-1}$.

HERA has been a machine of excellence for the study of QCD and the structure of the proton. A combination of the inclusive diffractive cross section measurements made by the H1 and ZEUS Collaborations at HERA is presented.

The analysis uses samples of diffractive deep inelastic ep scattering data at a centre-of-mass energy root s = GeV where leading protons are detected by dedicated by: Proceedings of the Ringberg Workshop New Trends in HERA Physics at HERA / Robert Thorne.

Measurement of the longitudinal proton structure function at low x at HERA / Joël Feltesse. HERA and the LHC / Albert De Roeck --List of name\/a> \" Proceedings of the Ringberg Workshop New Trends in HERA Physics \/span>\"@ en\/a.

to inclusive DIS, the diffractive parton distributions can be determined from measurements by a DGLAP QCD ﬁt to the inclusive diffractive DIS cross section. First analyses of this kind were performed in [2,11,12] based on measurements of the diffractive structure function FD 2 at HERA.

Physics With Polarized beams at eRHIC. 3/23/ Abhay Deshpande 1 –Recognition of rapidity gap events (diffractive physics at HERA) –Better measurement of nuclear fragments of the difference in the spin structure functions of proton & neutron Particle Data Book (, ), Extended version.

A direct measurement of the gluon structure of the proton can be achieved by lowering the center‐of‐mass energy for HERA. These data, combined with the corresponding data from the high energy running, will allow a model‐free extraction of the longitudinal structure function, both in inclusive and diffractive scattering, and thus allow for Author: Christian Kiesling.

Single inclusive particle production at high energy from HERA data to proton-nucleus collisions. Physical Review D, Vol. 88, Issue. 11, Structure function of the nucleus in the perturbative QCD with Nc → ∞ (BFKL pomeron fan diagrams), Eur and Hebecker, A. (), Inclusive and diffractive structure functions at small x, Nucl.

Phys Cited by: •Spin structure functions g1 (p,n) at low x, high precision-- g1(p-n): Bjorken Spin sum rule better than 1% accuracy •Polarized gluon distribution function ΔG(x,Q2)-- at least three different experimental methods •Precision measurement of α S(Q2) from g1 scaling violations •Polarized s.f.

of the photon from photo-production. Measurement of inclusive ep cross sections at high Q(2) at root s= and GeV and of the longitudinal proton structure function F-L at HERA Andreev V, Baghdasaryan A, Baghdasaryan S, Begzsuren K, Belousov A, Belov P, Boudry V, Bradt G, Brinkmann M, Brisson V, Britzger D, Buniatyan A, Bylinkin A, Bystritskaya L, Campbell A J, Avila K B.

ISBN: OCLC Number: Description: x, pages: illustrations ; 23 cm: Contents: Electron nucleon scattering at large energy or momentum transfers: selected results from the HERA collider experiments / G. Wolf --The spin structure of the nucleon / M. Vetterli --Relativistic heavy ion physics and the relativistic heavy ion collider /.

Imaging the Proton via Hard Exclusive Production in Diffractive pp Scattering Charles Earl Hyde Old Dominion University, Norfolk VA USA Université Blaise Pascal, Clermont-Ferrand, France (b,s) is a slowly varying function of s at high : Charles Hyde, Leonid Frankfurt, Mark Strikman, Christian Weiss.

The International Europhysics Conference on High Energy Physics was held at the campus of the Hebrew University of Jerusalem and at the Jerusalem Renaissance Hotel, from August 19th to August 25th, This was the first time that the European Physical Society had its High Energy Physics.

Measurement of the differential cross-sections of inclusive, prompt and non-prompt J/psi production in proton-proton collisions at root s=7 TeV The ATLAS collaboration, 21/09/, In: Nuclear Physics B. 3, p. 58 p. Measurement of the open-charm contribution to the diffractive proton structure function DESY hep-ex/ Spires Measurement of high-Q^2 charged current cross sections in e^+p deep inelastic scattering at HERA DESY hep-ex/ Spires: UCL Jet production in charged current deep inelastic e+p scattering at HERA.

pdf A. Vera et al. 5D tiny black holes and perturbative saturation, (). Talk at the LHeC Workshop at Divonne [2] G. Altarelli, B. Mele.The most non-trivial of the established microscopic theories of physics is QCD: the theory of the strong interaction.

A critical link between theory and experiment is provided by the methods of perturbative QCD, notably the well-known factorization by: Chapter 1, confinement implies ebook this experiment cannot be d, the EIC will explore the contents of ebook proton using a well-understood probe, the photon.

In high-energy collisions of virtual photons and nucleons, the quark and gluon fields in the nucleon manifest themselves as quark and gluon “partons” (see Box in Chapter 1).