Measurement of the Generalized Polarizabilities of the Proton in Virtual Compton Scattering at Q2=0.92 and 1.76  GeV2

Laveissière, G.; Todor, L.; Degrande, N.; Jaminion, S.; Jutier, C.; Di Salvo, R.; Van Hoorebeke, L.; Alexa, L. C.; Anderson, B. D.; Aniol, K. A.; Arundell, K.; Audit, G.; Auerbach, L.; Baker, F. T.; Baylac, M.; Berthot, J.; Bertin, P. Y.; Bertozzi, W.; Bimbot, L.; Boeglin, W. U.; Brash, E. J.; Breton, V.; Breuer, H.; Burtin, E.; Calarco, J. R.; Cardman, L. S.; Cavata, C.; Chang, C. -C.; Chen, J. -P.; Chudakov, E.; Cisbani, E.; Dale, D. S.; de Jager, C. W.; De Leo, R.; Deur, A.; d'Hose, N.; Dodge, G. E.; Domingo, J. J.; Elouadrhiri, L.; Epstein, M. B.; Ewell, L. A.; Finn, J. M.; Fissum, K. G.; Fonvieille, H.; Fournier, G.; Frois, B.; Frullani, S.; Furget, C.; Gao, H.; Gao, J.; Garibaldi, F.; Gasparian, A.; Gilad, S.; Gilman, R.; Glamazdin, A.; Glashausser, C.; Gomez, J.; Gorbenko, V.; Grenier, P.; Guichon, P. A.  M.; Hansen, J. O.; Holmes, R.; Holtrop, M.; Howell, C.; Huber, G. M.; Hyde-Wright, C. E.; Incerti, S.; Iodice, M.; Jardillier, J.; Jones, M. K.; Kahl, W.; Kato, S.; Katramatou, A. T.; Kelly, J. J.; Kerhoas, S.; Ketikyan, A.; Khayat, M.; Kino, K.; Kox, S.; Kramer, L. H.; Kumar, K. S.; Kumbartzki, G.; Kuss, M.; Leone, A.; LeRose, J. J.; Liang, M.; Lindgren, R. A.; Liyanage, N.; Lolos, G. J.; Lourie, R. W.; Madey, R.; Maeda, K.; Malov, S.; Manley, D. M.; Marchand, C.; Marchand, D.; Margaziotis, D. J.; Markowitz, P.; Marroncle, J.; Martino, J.; McCormick, K.; McIntyre, J.; Mehrabyan, S.; Merchez, F.; Meziani, Z. E.; Michaels, R.; Miller, G. W.; Mougey, J. Y.; Nanda, S. K.; Neyret, D.; Offermann, E. A.  J.  M.; Papandreou, Z.; Pasquini, B.; Perdrisat, C. F.; Perrino, R.; Petratos, G. G.; Platchkov, S.; Pomatsalyuk, R.; Prout, D. L.; Punjabi, V. A.; Pussieux, T.; Quémenér, G.; Ransome, R. D.; Ravel, O.; Real, J. S.; Renard, F.; Roblin, Y.; Rowntree, D.; Rutledge, G.; Rutt, P. M.; Saha, A.; Saito, T.; Sarty, A. J.; Serdarevic, A.; Smith, T.; Smirnov, G.; Soldi, K.; Sorokin, P.; Souder, P. A.; Suleiman, R.; Templon, J. A.; Terasawa, T.; Tieulent, R.; Tomasi-Gustaffson, E.; Tsubota, H.; Ueno, H.; Ulmer, P. E.; Urciuoli, G. M.; Vanderhaeghen, M.; Van De Vyver, R.; Van der Meer, R. L.  J.; Vernin, P.; Vlahovic, B.; Voskanyan, H.; Voutier, E.; Watson, J. W.; Weinstein, L. B.; Wijesooriya, K.; Wilson, R.; Wojtsekhowski, B. B.; Zainea, D. G.; Zhang, W-M.; Zhao, J.; Zhou, Z. -L.

doi:10.1103/PhysRevLett.93.122001

Title: Measurement of the Generalized Polarizabilities of the Proton in Virtual Compton Scattering at $Q^{2} = 0.92$ and $1.76 {G e V}^{2}$

Journal Article · Wed Sep 01 00:00:00 EDT 2004 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.93.122001· OSTI ID:834099

Laveissière, G.; Todor, L.; Degrande, N.; Jaminion, S.; Jutier, C.; Di Salvo, R.; Van Hoorebeke, L.; Alexa, L. C.; Anderson, B. D.; Aniol, K. A.; Arundell, K.; Audit, G.; Auerbach, L.; Baker, F. T.; Baylac, M.; Berthot, J.; Bertin, P. Y.; Bertozzi, W.; Bimbot, L.; Boeglin, W. U. more »

We report a Virtual Compton Scattering study of the proton at low CM energies. We have determined the structure functions P{sub LL} - P{sub TT}/{epsilon} and P{sub LT}, and the electric and magnetic Generalized Polarizabilities (GPs) {alpha}{sub E}(Q{sup 2}) and {beta}{sub M}(Q{sup 2}) at momentum transfer Q{sup 2} = 0.92 and 1.76 GeV{sup 2}. The electric GP shows a strong fall-off with Q{sup 2}, and its global behavior does not follow a simple dipole form. The magnetic GP shows a rise and then a fall-off; this can be interpreted as the dominance of a long-distance diamagnetic pion cloud at low Q{sup 2}, compensated at higher Q{sup 2} by a paramagnetic contribution from {pi}N intermediate states.

View Journal Article

Cite

Export

Save

Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Energy Research (ER) (US)

Contributing Organization:: Jefferson Lab Hall A Collaboration

DOE Contract Number:: AC05-84ER40150

OSTI ID:: 834099

Report Number(s):: JLAB-PHY-04-35; DOE/ER/40150-2953; hep-ph/0404243; PRLTAO; TRN: US0407061

Journal Information:: Physical Review Letters, Vol. 93, Issue 12; ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

References (19)

QED radiative corrections to virtual Compton scattering Vanderhaeghen, M.; Friedrich, J. M.; Lhuillier, D. Physical Review C, Vol. 62, Issue 2 https://doi.org/10.1103/PhysRevC.62.025501	journal	July 2000
Virtual compton scattering and generalized polarizabilities of the proton Guichon, P. A. M.; Liu, G. Q.; Thomas, A. W. Nuclear Physics A, Vol. 591, Issue 4 https://doi.org/10.1016/0375-9474(95)00217-O	journal	September 1995
Basic instrumentation for Hall A at Jefferson Lab Alcorn, J.; Anderson, B. D.; Aniol, K. A. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 522, Issue 3 https://doi.org/10.1016/j.nima.2003.11.415	journal	April 2004
First Determination of Generalized Polarizabilities of the Proton by a Virtual Compton Scattering Experiment Roche, J.; Friedrich, J. M.; Lhuillier, D. Physical Review Letters, Vol. 85, Issue 4 https://doi.org/10.1103/PhysRevLett.85.708	journal	July 2000
Virtual Compton scattering off the nucleon Guichon, P. Progress in Particle and Nuclear Physics, Vol. 41 https://doi.org/10.1016/S0146-6410(98)00056-8	journal	January 1998
Backward electroproduction of $π^{0}$ mesons on protons in the region of nucleon resonances at four momentum transfer squared $Q^{2} = 1.0 {GeV}^{2}$ Laveissière, G.; Degrande, N.; Jaminion, S. Physical Review C, Vol. 69, Issue 4 https://doi.org/10.1103/PhysRevC.69.045203	journal	April 2004
Double polarization observables in virtual Compton scattering Vanderhaeghen, Marc Physics Letters B, Vol. 402, Issue 3-4 https://doi.org/10.1016/S0370-2693(97)00500-5	journal	June 1997
Dispersion relation formalism for virtual Compton scattering off the proton Pasquini, B.; Gorchtein, M.; Drechsel, D. The European Physical Journal A, Vol. 11, Issue 2 https://doi.org/10.1007/s100500170084	journal	July 2001
Low-energy Compton scattering and the polarizabilities of the proton Olmos de León, V.; Wissmann, F.; Achenbach, P. The European Physical Journal A, Vol. 10, Issue 2 https://doi.org/10.1007/s100500170132	journal	April 2001
Bremsstrahlung of Very Low-Energy Quanta in Elementary Particle Collisions Low, F. E. Physical Review, Vol. 110, Issue 4 https://doi.org/10.1103/PhysRev.110.974	journal	May 1958
Generalized dipole polarizabilities and the spatial structure of hadrons L’vov, A. I.; Scherer, S.; Pasquini, B. Physical Review C, Vol. 64, Issue 1 https://doi.org/10.1103/PhysRevC.64.015203	journal	June 2001
Evidence for virtual Compton scattering from the proton van den Brand, J. F. J.; Ent, R.; Anthony, P. L. Physical Review D, Vol. 52, Issue 9 https://doi.org/10.1103/PhysRevD.52.4868	journal	November 1995
A unitary isobar model for pion photo- and electroproduction on the proton up to 1 GeV Drechsel, D.; Hanstein, O.; Kamalov, S. S. Nuclear Physics A, Vol. 645, Issue 1 https://doi.org/10.1016/S0375-9474(98)00572-7	journal	January 1999
Higher order polarizabilities of the proton Holstein, Barry R.; Drechsel, D.; Pasquini, B. Physical Review C, Vol. 61, Issue 3 https://doi.org/10.1103/PhysRevC.61.034316	journal	February 2000
Generalized polarizabilities and the spin-averaged amplitude in virtual Compton scattering off the nucleon Drechsel, D.; Knöchlein, G.; Metz, A. Physical Review C, Vol. 55, Issue 1 https://doi.org/10.1103/PhysRevC.55.424	journal	January 1997
The $ep \to e^{'} p η$ Reaction at and above the $S_{11} (1535)$ Baryon Resonance Thompson, R.; Dytman, S.; Kim, K. Y. Physical Review Letters, Vol. 86, Issue 9 https://doi.org/10.1103/PhysRevLett.86.1702	journal	February 2001
New empirical fits to the proton electromagnetic form factors Brash, E. J.; Kozlov, A.; Li, Sh. Physical Review C, Vol. 65, Issue 5 https://doi.org/10.1103/PhysRevC.65.051001	journal	April 2002
Structure analysis of the virtual Compton scattering amplitude at low energies Drechsel, D.; Knöchlein, G.; Korchin, A. Yu. Physical Review C, Vol. 57, Issue 2 https://doi.org/10.1103/PhysRevC.57.941	journal	February 1998
Polarizabilities and parity nonconservation in the Cs atom and limits on the deviation from the standard electroweak model Dzuba, V. A.; Flambaum, V. V.; Sushkov, O. P. Physical Review A, Vol. 56, Issue 6 https://doi.org/10.1103/PhysRevA.56.R4357	journal	December 1997

Similar Records

Virtual Compton scattering and the generalized polarizabilities of the proton at

Q^{2} = 0.92

and 1.76 GeV

^{2}

Journal Article · Sun Jul 01 00:00:00 EDT 2012 · Physical Review. C, Nuclear Physics · OSTI ID:834099

Fonvieille, H.; Laveissière, G.; Degrande, N.; +161 more

Measurement of the Cross Sections of

Ξ_{c}^{0}

and

Ξ_{c}^{+}

Baryons and of the Branching-Fraction Ratio

BR (Ξ_{c}^{0} \to Ξ^{-} e^{+} ν_{e}) / BR (Ξ_{c}^{0} \to Ξ^{-} π^{+})

p p

Collisions at

\sqrt{s} = 13 TeV

Journal Article · Tue Dec 28 00:00:00 EST 2021 · Physical Review Letters · OSTI ID:834099

Acharya, S.; Adamová, D.; Adler, A.; +1023 more

Low-

p_{T}

e^{+} e^{-}

Pair Production in

Au + Au

Collisions at

\sqrt{s_{N N}} = 200 GeV

and

U + U

Collisions at

\sqrt{s_{N N}} = 193 GeV

at STAR

Journal Article · Tue Sep 25 00:00:00 EDT 2018 · Physical Review Letters · OSTI ID:834099

Adam, J.; Adamczyk, L.; Adams, J. R.; +347 more

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CLOUDS
COMPTON EFFECT
DIPOLES
GLOBAL POSITIONING SYSTEM
MOMENTUM TRANSFER
PIONS
PROTONS
STRUCTURE FUNCTIONS

Title: Measurement of the Generalized Polarizabilities of the Proton in Virtual Compton Scattering at Q 2 = 0.92 and 1.76 G e V 2

Citation Formats

References (19)

Similar Records

Related Subjects

Title: Measurement of the Generalized Polarizabilities of the Proton in Virtual Compton Scattering at $Q^{2} = 0.92$ and $1.76 {G e V}^{2}$