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Journal Articles Physical Review C Year : 2013

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

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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
N. A. Baltzell
  • Function : Author
M. Battaglieri
  • Function : Author
V. Batourine
  • Function : Author
I. Bedlinskiy
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
P. L. Cole
  • Function : Author
M. Contalbrigo
  • Function : Author
V. Crede
  • Function : Author
A. d'Angelo
N. Dashyan
  • Function : Author
R. de Vita
  • Function : Author
E. de Sanctis
  • Function : Author
A. Deur
C. Djalali
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D. Doughty
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M. Dugger
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R. Dupre
H. Egiyan
A. El Alaoui
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L. El Fassi
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P. Eugenio
  • Function : Author
G. Fedotov
  • Function : Author
S. Fegan
R. Fersch
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J. A. Fleming
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A. Fradi
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M. Y. Gabrielyan
  • Function : Author
N. Gevorgyan
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G. P. Gilfoyle
  • Function : Author
K. L. Giovanetti
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F. X. Girod
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J. T. Goetz
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W. Gohn
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E. Golovatch
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R. W. Gothe
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K. A. Griffioen
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B. Guegan
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M. Guidal
  • Function : Author
L. Guo
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K. Hafidi
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H. Hakobyan
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C. Hanretty
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N. Harrison
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K. Hicks
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D. Ho
  • Function : Author
M. Holtrop
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
M. Khandaker
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
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S. Lewis
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K. Livingston
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H. Y. Lu
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I. J. D. Macgregor
  • Function : Author
Y. Mao
  • Function : Author
David Martinez
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  • PersonId : 831565
M. Mayer
  • Function : Author
B. Mckinnon
  • Function : Author
C. A. Meyer
  • Function : Author
T. Mineeva
M. Mirazita
  • Function : Author
V. Mokeev
R. A. Montgomery
  • Function : Author
E. Munevar
  • Function : Author
C. Muñoz Camacho
P. Nadel-Turonski
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R. Nasseripour
  • Function : Author
S. Niccolai
  • Function : Author
G. Niculescu
  • Function : Author
I. Niculescu
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M. Osipenko
A. I. Ostrovidov
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L. L. Pappalardo
  • Function : Author
R. Paremuzyan
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K. Park
  • Function : Author
S. Park
  • Function : Author
E. Pasyuk
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
D. Protopopescu
A. J. R. Puckett
  • Function : Author
B. A. Raue
  • Function : Author
G. Ricco
  • Function : Author
D. Rimal
  • Function : Author
M. Ripani
G. Rosner
  • Function : Author
P. Rossi
  • Function : Author
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
N. K. Walford
  • Function : Author
L. B. Weinstein
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D. P. Weygand
  • Function : Author
M. H. Wood
  • Function : Author
N. Zachariou
J. Zhang
  • Function : Author
Z. W. Zhao
  • Function : Author
I. Zonta
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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.

Dates and versions

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

Identifiers

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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