Experimental study of the P11(1440) and D13(1520) resonances from the CLAS data on ep→e′π+π−p′ - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2012

Experimental study of the P11(1440) and D13(1520) resonances from the CLAS data on ep→e′π+π−p′

V.I. Mokeev , V.D. Burkert , L. Elouadrhiri , G.V. Fedotov , E.N. Golovatch , R.W. Gothe , B.S. Ishkhanov , E.L. Isupov , K.P. Adhikari , M. Aghasyan , M. Anghinolfi , H. Avakian , H. Baghdasaryan , J. Ball (1) , N.A. Baltzell , M. Battaglieri , V. Batourine , I. Bedlinskiy , A.S. Biselli , C. Bookwalter , S. Boiarinov , W.J. Briscoe , W.K. Brooks , D.S. Carman , A. Celentano , G. Charles (1) , P.L. Cole , M. Contalbrigo , V. Crede , A. d'Angelo , A. Daniel , N. Dashyan , R. de Vita , E. de Sanctis , A. Deur , C. Djalali , D. Doughty , R. Dupre , A. El Alaoui , P. Eugenio , S. Fegan , A. Fradi , K.L. Giovanetti , F.X. Girod , W. Gohn , L. Graham , K.A. Griffioen , B. Guegan (2) , M. Guidal (2) , L. Guo , K. Hafidi , H. Hakobyan , C. Hanretty , K. Hicks , D. Ho , M. Holtrop , Y. Ilieva , D.G. Ireland , H.S. Jo , K. Joo , D. Keller , M. Khandaker , P. Khetarpal , A. Kim , W. Kim , A. Klein , F.J. Klein , S. Koirala , A. Kubarovsky , V. Kubarovsky , S.V. Kuleshov , N.D. Kvaltine , K. Livingston , H.Y. Lu , I.J.D. Macgregor , Y. Mao , N. Markov , David Martinez , M. Mayer , B. Mckinnon , C.A. Meyer , T. Mineeva , M. Mirazita , H. Moutarde (1) , E. Munevar , P. Nadel-Turonski , C.S. Nepali , A.I. Ostrovidov , L.L. Pappalardo , R. Paremuzyan , K. Park , S. Park , E. Pasyuk , S. Anefalos Pereira , S. Pisano , O. Pogorelko , S. Pozdniakov , J.W. Price , S. Procureur (1) , D. Protopopescu , B.A. Raue , G. Ricco , D. Rimal , M. Ripani , G. Rosner , P. Rossi , F. Sabatié (1) , M.S. Saini , C. Salgado , D. Schott , R.A. Schumacher , E. Seder , H. Seraydaryan , Y.G. Sharabian , G.D. Smith , L.C. Smith , D.I. Sober , D. Sokhan , S. Stepanyan , S.S. Stepanyan , P. Stoler , I.I. Strakovsky , S. Strauch , W. Tang , C.E. Taylor , Ye Tian , S. Tkachenko , A. Trivedi , M. Ungaro , M.F. Vineyard , H. Voskanyan , E. Voutier (3) , N.K. Walford , M.H. Wood , N. Zachariou , Z.W. Zhao , I. Zonta
V.I. Mokeev
  • Function : Author
V.D. Burkert
  • Function : Author
L. Elouadrhiri
  • Function : Author
G.V. Fedotov
  • Function : Author
E.N. Golovatch
  • Function : Author
R.W. Gothe
B.S. Ishkhanov
  • Function : Author
E.L. Isupov
  • Function : Author
K.P. Adhikari
  • Function : Author
M. Aghasyan
  • 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
C. Bookwalter
  • Function : Author
S. Boiarinov
  • Function : Author
W.J. Briscoe
  • Function : Author
W.K. Brooks
D.S. Carman
  • Function : Author
A. Celentano
P.L. Cole
M. Contalbrigo
  • Function : Author
V. Crede
  • Function : Author
A. d'Angelo
A. Daniel
  • Function : Author
N. Dashyan
  • Function : Author
R. de Vita
  • Function : Author
E. de Sanctis
  • Function : Author
A. Deur
C. Djalali
  • Function : Author
D. Doughty
  • Function : Author
R. Dupre
A. El Alaoui
  • Function : Author
P. Eugenio
  • Function : Author
S. Fegan
A. Fradi
  • Function : Author
K.L. Giovanetti
  • Function : Author
F.X. Girod
  • Function : Author
W. Gohn
  • Function : Author
L. Graham
  • Function : Author
K.A. Griffioen
  • Function : Author
L. Guo
  • Function : Author
K. Hafidi
  • Function : Author
H. Hakobyan
  • Function : Author
C. Hanretty
  • Function : Author
K. Hicks
  • Function : Author
D. Ho
  • Function : Author
M. Holtrop
Y. Ilieva
  • Function : Author
D.G. Ireland
  • Function : Author
H.S. Jo
  • Function : Author
K. Joo
  • Function : Author
D. Keller
M. Khandaker
P. Khetarpal
  • Function : Author
A. Kim
  • Function : Author
W. Kim
  • Function : Author
A. Klein
  • Function : Author
F.J. Klein
  • Function : Author
S. Koirala
  • Function : Author
A. Kubarovsky
  • Function : Author
V. Kubarovsky
  • Function : Author
S.V. Kuleshov
  • Function : Author
N.D. Kvaltine
  • Function : Author
K. Livingston
  • Function : Author
H.Y. Lu
  • Function : Author
I.J.D. Macgregor
Y. Mao
  • Function : Author
N. Markov
  • Function : Author
David Martinez
  • Function : Author
  • PersonId : 831565
M. Mayer
  • Function : Author
B. Mckinnon
  • Function : Author
C.A. Meyer
  • Function : Author
T. Mineeva
M. Mirazita
  • Function : Author
E. Munevar
  • Function : Author
P. Nadel-Turonski
  • Function : Author
C.S. Nepali
  • Function : Author
A.I. Ostrovidov
  • Function : Author
L.L. Pappalardo
  • Function : Author
R. Paremuzyan
  • Function : Author
K. Park
  • Function : Author
S. Park
  • Function : Author
E. Pasyuk
S. Anefalos Pereira
  • Function : Author
S. Pisano
  • Function : Author
O. Pogorelko
  • Function : Author
S. Pozdniakov
  • Function : Author
J.W. Price
  • Function : Author
D. Protopopescu
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
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
L.C. Smith
  • Function : Author
D.I. Sober
  • Function : Author
D. Sokhan
  • Function : Author
S. Stepanyan
  • Function : Author
S.S. Stepanyan
  • Function : Author
P. Stoler
  • Function : Author
I.I. Strakovsky
  • Function : Author
S. Strauch
  • Function : Author
W. Tang
  • Function : Author
C.E. Taylor
  • Function : Author
Ye Tian
S. Tkachenko
  • Function : Author
A. Trivedi
  • Function : Author
M. Ungaro
  • Function : Author
M.F. Vineyard
  • Function : Author
H. Voskanyan
  • Function : Author
N.K. Walford
  • Function : Author
M.H. Wood
  • Function : Author
N. Zachariou
Z.W. Zhao
  • Function : Author
I. Zonta
  • Function : Author

Abstract

The transition helicity amplitudes from the proton ground state to the $P_{11}(1440)$ and $D_{13}(1520)$ excited states ($\gamma_{v}pN^*$ electrocouplings) were determined from the analysis of nine independent one-fold differential $\pi^{+} \pi^{-} p$ electroproduction cross sections off a proton target, taken with CLAS at photon virtualities 0.25\enskip {\rm GeV$^{2}$} $<$ $Q^{2}$ $<$ 0.60 \enskip {\rm GeV$^{2}$}. The phenomenological reaction model was employed for separation of the resonant and non-resonant contributions to the final state. The $P_{11}(1440)$ and $D_{13}(1520)$ electrocouplings were obtained from the resonant amplitudes parametrized within the framework of a unitarized Breit-Wigner ansatz. They are consistent with results obtained in the previous CLAS analyses of the $\pi^+n$ and $\pi^0p$ channels. The successful description of a large body of data in dominant meson-electroproduction channels off protons with the same $\gamma_{v}pN^*$ electrocouplings offers clear evidence for the reliable extraction of these fundamental quantities from meson-electroproduction data. This analysis also led to the determination of the long-awaited hadronic branching ratios for the $D_{13}(1520)$ decay into $\Delta\pi$ (24%-32%) and $N\rho$ (8%-17%).

Dates and versions

in2p3-00732442 , version 1 (14-09-2012)

Identifiers

Cite

V.I. Mokeev, V.D. Burkert, L. Elouadrhiri, G.V. Fedotov, E.N. Golovatch, et al.. Experimental study of the P11(1440) and D13(1520) resonances from the CLAS data on ep→e′π+π−p′. Physical Review C, 2012, 86, pp.035203. ⟨10.1103/PhysRevC.86.035203⟩. ⟨in2p3-00732442⟩
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