Near Threshold Neutral Pion Electroproduction at High Momentum Transfers and Generalized Form Factors

P. Khetarpal; P. Stoler; I. G. Aznauryan; V. Kubarovsky; K. P. Adhikari; D. Adikaram; M. Aghasyan; M. J. Amaryan; M. D. Anderson; S. Anefalos Pereira; M. Anghinolfi; H. Avakian; H. Baghdasaryan; J. Ball; N. A. Baltzell; M. Battaglieri; V. Batourine; I. Bedlinskiy; A. S. Biselli; J. Bono; S. Boiarinov; W. J. Briscoe; W. K. Brooks; V. D. Burkert; D. S. Carman; A. Celentano; G. Charles; P. L. Cole; M. Contalbrigo; V. Crede; A. d'Angelo; N. Dashyan; R. de Vita; E. de Sanctis; A. Deur; C. Djalali; D. Doughty; M. Dugger; R. Dupre; H. Egiyan; A. El Alaoui; L. El Fassi; P. Eugenio; G. Fedotov; S. Fegan; R. Fersch; J. A. Fleming; A. Fradi; M. Y. Gabrielyan; M. Garçon; N. Gevorgyan; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; J. T. Goetz; W. Gohn; E. Golovatch; R. W. Gothe; K. A. Griffioen; B. Guegan; M. Guidal; L. Guo; K. Hafidi; H. Hakobyan; C. Hanretty; N. Harrison; K. Hicks; D. Ho; M. Holtrop; C. E. Hyde; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; E. L. Isupov; H. S. Jo; K. Joo; D. Keller; M. Khandaker; A. Kim; W. Kim; F. J. Klein; S. Koirala; A. Kubarovsky; S. V. Kuleshov; N. D. Kvaltine; S. Lewis; K. Livingston; H. Y. Lu; I. J. D. Macgregor; Y. Mao; David Martinez; M. Mayer; B. Mckinnon; C. A. Meyer; T. Mineeva; M. Mirazita; V. Mokeev; R. A. Montgomery; H. Moutarde; E. Munevar; C. Muñoz Camacho; P. Nadel-Turonski; R. Nasseripour; S. Niccolai; G. Niculescu; I. Niculescu; M. Osipenko; A. I. Ostrovidov; L. L. Pappalardo; R. Paremuzyan; K. Park; S. Park; E. Pasyuk; E. Phelps; J. J. Phillips; S. Pisano; O. Pogorelko; S. Pozdniakov; J. W. Price; S. Procureur; D. Protopopescu; A. J. R. Puckett; B. A. Raue; G. Ricco; D. Rimal; M. Ripani; G. Rosner; P. Rossi; F. Sabatié; M. S. Saini; C. Salgado; N. A. Saylor; D. Schott; R. A. Schumacher; E. Seder; H. Seraydaryan; Y. G. Sharabian; G. D. Smith; D. I. Sober; D. Sokhan; S. S. Stepanyan; S. Stepanyan; I. I. Strakovsky; S. Strauch; M. Taiuti; W. Tang; C. E. Taylor; S. Tkachenko; M. Ungaro; B. Vernarsky; H. Voskanyan; E. Voutier; N. K. Walford; L. B. Weinstein; D. P. Weygand; M. H. Wood; N. Zachariou; J. Zhang; Z. W. Zhao; I. Zonta

doi:10.1103/PhysRevC.87.045205

Journal Articles Physical Review C Year : 2013

Near Threshold Neutral Pion Electroproduction at High Momentum Transfers and Generalized Form Factors

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1
2

P. Khetarpal

Function : Author

P. Stoler

Function : Author

I. G. Aznauryan

Function : Author

V. Kubarovsky

Function : Author

K. P. Adhikari

Function : Author

D. Adikaram

Function : Author

M. Aghasyan

Function : Author

M. J. Amaryan

Function : Author

M. D. Anderson

Function : Author

S. Anefalos Pereira

Function : Author

M. Anghinolfi

Function : Author

H. Avakian

Function : Author

H. Baghdasaryan

Function : Author

J. Ball

Function : Author

Département de Physique Nucléaire (ex SPhN)

N. A. Baltzell

Function : Author

M. Battaglieri

Function : Author

V. Batourine

Function : Author

I. Bedlinskiy

Function : Author
PersonId : 755548
ORCID : 0000-0002-0289-0866

A. S. Biselli

Function : Author

J. Bono

Function : Author

S. Boiarinov

Function : Author

W. J. Briscoe

Function : Author

W. K. Brooks

Function : Author

V. D. Burkert

Function : Author

D. S. Carman

Function : Author

A. Celentano

Function : Author
PersonId : 764982
ORCID : 0000-0002-7104-2983

G. Charles

Function : Author

Département de Physique Nucléaire (ex SPhN)

P. L. Cole

Function : Author

M. Contalbrigo

Function : Author

V. Crede

Function : Author

A. d'Angelo

Function : Author
PersonId : 755183
ORCID : 0000-0003-3050-4907

N. Dashyan

Function : Author

R. de Vita

Function : Author

E. de Sanctis

Function : Author

A. Deur

Function : Author
PersonId : 755225
ORCID : 0000-0002-2203-7723

C. Djalali

Function : Author

D. Doughty

Function : Author

M. Dugger

Function : Author

R. Dupre

Function : Author
PersonId : 740338
IdHAL : raphael-dupre
ORCID : 0000-0001-7935-8221
IdRef : 165334010

H. Egiyan

Function : Author
PersonId : 755392
ORCID : 0000-0002-5881-3616

A. El Alaoui

Function : Author

L. El Fassi

Function : Author

P. Eugenio

Function : Author

G. Fedotov

Function : Author

S. Fegan

Function : Author
PersonId : 740343
IdHAL : stephen-fegan
IdRef : 253133149

R. Fersch

Function : Author

J. A. Fleming

Function : Author

A. Fradi

Function : Author

M. Y. Gabrielyan

Function : Author

M. Garçon

Function : Author

Département de Physique Nucléaire (ex SPhN)

N. Gevorgyan

Function : Author

G. P. Gilfoyle

Function : Author

K. L. Giovanetti

Function : Author

F. X. Girod

Function : Author

J. T. Goetz

Function : Author

W. Gohn

Function : Author

E. Golovatch

Function : Author

R. W. Gothe

Function : Author

K. A. Griffioen

Function : Author

B. Guegan

Function : Author

M. Guidal

Function : Author

L. Guo

Function : Author

K. Hafidi

Function : Author

H. Hakobyan

Function : Author

C. Hanretty

Function : Author

N. Harrison

Function : Author

K. Hicks

Function : Author

D. Ho

Function : Author

M. Holtrop

Function : Author
PersonId : 755237
ORCID : 0000-0002-1110-1152

C. E. Hyde

Function : Author

Y. Ilieva

Function : Author

D. G. Ireland

Function : Author

B. S. Ishkhanov

Function : Author

E. L. Isupov

Function : Author

H. S. Jo

Function : Author

K. Joo

Function : Author

D. Keller

Function : Author
PersonId : 755224
ORCID : 0000-0002-2608-1270

M. Khandaker

Function : Author
PersonId : 755252
ORCID : 0000-0003-0370-9536

A. Kim

Function : Author

W. Kim

Function : Author

F. J. Klein

Function : Author

S. Koirala

Function : Author

A. Kubarovsky

Function : Author

S. V. Kuleshov

Function : Author

N. D. Kvaltine

Function : Author

S. Lewis

Function : Author

K. Livingston

Function : Author

H. Y. Lu

Function : Author

I. J. D. Macgregor

Function : Author

Y. Mao

Function : Author

David Martinez

Function : Author
PersonId : 831565

M. Mayer

Function : Author

B. Mckinnon

Function : Author

C. A. Meyer

Function : Author

T. Mineeva

Function : Author
PersonId : 761901
ORCID : 0000-0002-1774-4802

M. Mirazita

Function : Author

V. Mokeev

Function : Author
PersonId : 755398
ORCID : 0000-0002-4557-1320

R. A. Montgomery

Function : Author

H. Moutarde

Function : Author

Département de Physique Nucléaire (ex SPhN)

E. Munevar

Function : Author

C. Muñoz Camacho

Function : Author
PersonId : 742360
IdHAL : carlos-munoz-camacho

P. Nadel-Turonski

Function : Author

R. Nasseripour

Function : Author

S. Niccolai

Function : Author

G. Niculescu

Function : Author

I. Niculescu

Function : Author

M. Osipenko

Function : Author
PersonId : 755399
ORCID : 0000-0001-9618-3013

A. I. Ostrovidov

Function : Author

L. L. Pappalardo

Function : Author

R. Paremuzyan

Function : Author

K. Park

Function : Author

S. Park

Function : Author

E. Pasyuk

Function : Author
PersonId : 755395
ORCID : 0000-0003-3877-1815

E. Phelps

Function : Author

J. J. Phillips

Function : Author

S. Pisano

Function : Author

O. Pogorelko

Function : Author

S. Pozdniakov

Function : Author

J. W. Price

Function : Author

S. Procureur

Function : Author

Département de Physique Nucléaire (ex SPhN)

D. Protopopescu

Function : Author
PersonId : 755397
ORCID : 0000-0002-8047-6513

A. J. R. Puckett

Function : Author

B. A. Raue

Function : Author

G. Ricco

Function : Author

D. Rimal

Function : Author

M. Ripani

Function : Author
PersonId : 755184
ORCID : 0000-0001-8632-7538

G. Rosner

Function : Author

P. Rossi

Function : Author

F. Sabatié

Function : Author

Département de Physique Nucléaire (ex SPhN)

M. S. Saini

Function : Author

C. Salgado

Function : Author

N. A. Saylor

Function : Author

D. Schott

Function : Author

R. A. Schumacher

Function : Author

E. Seder

Function : Author

H. Seraydaryan

Function : Author

Y. G. Sharabian

Function : Author

G. D. Smith

Function : Author

D. I. Sober

Function : Author

D. Sokhan

Function : Author

S. S. Stepanyan

Function : Author

S. Stepanyan

Function : Author

I. I. Strakovsky

Function : Author

S. Strauch

Function : Author

M. Taiuti

Function : Author

W. Tang

Function : Author

C. E. Taylor

Function : Author

S. Tkachenko

Function : Author

M. Ungaro

Function : Author

B. Vernarsky

Function : Author

H. Voskanyan

Function : Author

E. Voutier

Function : Author
PersonId : 749688
IdHAL : eric-voutier

Laboratoire de Physique Subatomique et de Cosmologie

N. K. Walford

Function : Author

L. B. Weinstein

Function : Author

D. P. Weygand

Function : Author

M. H. Wood

Function : Author

N. Zachariou

Function : Author
PersonId : 760627
ORCID : 0000-0001-7621-5612

J. Zhang

Function : Author

Z. W. Zhao

Function : Author

I. Zonta

Function : Author

Abstract

We report the measurement of near threshold neutral pion electroproduction cross sections and the extraction of the associated structure functions on the proton in the kinematic range $Q^2$ from 2 to 4.5 GeV$^2$ and $W$ from 1.08 to 1.16 GeV. These measurements allow us to access the dominant pion-nucleon s-wave multipoles $E_{0+}$ and $S_{0+}$ in the near-threshold region. In the light-cone sum-rule framework (LCSR), these multipoles are related to the generalized form factors $G_1^{\pi^0 p}(Q^2)$ and $G_2^{\pi^0 p}(Q^2)$. The data are compared to these generalized form factors and the results for $G_1^{\pi^0 p}(Q^2)$ are found to be in good agreement with the LCSR predictions, but the level of agreement with $G_2^{\pi^0 p}(Q^2)$ is poor.

Domains

Physics [physics] Nuclear Experiment [nucl-ex]

Emmanuelle Vernay : Connect in order to contact the contributor

https://hal.in2p3.fr/in2p3-00762236

Submitted on : Thursday, December 6, 2012-4:41:30 PM

Last modification on : Monday, December 13, 2021-9:14:55 AM

Dates and versions

in2p3-00762236 , version 1 (06-12-2012)

Identifiers

HAL Id : in2p3-00762236 , version 1
ARXIV : 1211.6460
DOI : 10.1103/PhysRevC.87.045205

Cite

P. Khetarpal, P. Stoler, I. G. Aznauryan, V. Kubarovsky, K. P. Adhikari, et al.. Near Threshold Neutral Pion Electroproduction at High Momentum Transfers and Generalized Form Factors. Physical Review C, 2013, 87, pp.045205. ⟨10.1103/PhysRevC.87.045205⟩. ⟨in2p3-00762236⟩

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Near Threshold Neutral Pion Electroproduction at High Momentum Transfers and Generalized Form Factors

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