Direct Observation of Proton-Neutron Short-Range Correlation Dominance in Heavy Nuclei - Archive ouverte HAL
Journal Articles Physical Review Letters Year : 2019

Direct Observation of Proton-Neutron Short-Range Correlation Dominance in Heavy Nuclei

M. Duer , O. Hen , J.R. Pybus , E.P. Segarra , A. Hrnjic , A.W. Denniston , R. Weiss , E. Piasetzky , L.B. Weinstein , A. Schmidt , I. Korover , E.O. Cohen , H. Hakobyan , S. Adhikari , Giovanni Angelini , M. Battaglieri , A. Beck , I. Bedlinskiy , A.S. Biselli , S. Boiarinov , W. Brooks , V.D. Burkert , F. Cao , D.S. Carman , A. Celentano , T. Chetry , G. Ciullo , L. Clark , P.L. Cole , M. Contalbrigo , O. Cortes , V. Crede , R. Cruz Torres , A. d'Angelo , N. Dashyan , E. de Sanctis , R. de Vita , A. Deur , S. Diehl , C. Djalali , R. Dupre (1) , Burcu Duran , H. Egiyan , A. El Alaoui , L. El Fassi , P. Eugenio , A. Filippi , T.A. Forest , G.P. Gilfoyle , K.L. Giovanetti , F.X. Girod , E. Golovatch , R.W. Gothe , K.A. Griffioen , L. Guo , K. Hafidi , C. Hanretty , N. Harrison , M. Hattawy , F. Hauenstein , T.B. Hayward , D. Heddle , K. Hicks , M. Holtrop , Y. Ilieva , D.G. Ireland , B.S. Ishkhanov , E.L. Isupov , H.S. Jo , K. Joo , M.L. Kabir , D. Keller , M. Khachatryan , A. Khanal , M. Khandaker , W. Kim , F.J. Klein , V. Kubarovsky , S.E. Kuhn , L. Lanza , G. Laskaris , P. Lenisa , K. Livingston , I .J .D. Macgregor , D. Marchand (1) , N. Markov , B. Mckinnon , S. Mey-Tal Beck , M. Mirazita , V. Mokeev , R.A. Montgomery , A Movsisyan , C. Munoz Camacho (1) , B. Mustapha , P. Nadel-Turonski , S. Niccolai (1) , G. Niculescu , M. Osipenko , A.I. Ostrovidov , M. Paolone , R. Paremuzyan , K. Park , E. Pasyuk , M. Patsyuk , W. Phelps , O. Pogorelko , Y. Prok , D. Protopopescu , M. Ripani , A. Rizzo , G. Rosner , P. Rossi , F. Sabatié (2) , B.A. Schmookler , R.A. Schumacher , Y. Sharabian , Iu. Skorodumina , D. Sokhan , N. Sparveris , S. Stepanyan , S. Strauch , M. Taiuti , J.A. Tan , N. Tyler , M. Ungaro , H. Voskanyan , E. Voutier (1) , R. Wang (1) , X. Wei , M.H. Wood , N. Zachariou , J. Zhang , Z.W. Zhao , X. Zheng
M. Duer
  • Function : Author
O. Hen
J.R. Pybus
E.P. Segarra
  • Function : Author
A. Hrnjic
  • Function : Author
A.W. Denniston
  • Function : Author
R. Weiss
  • Function : Author
E. Piasetzky
  • Function : Author
L.B. Weinstein
  • Function : Author
A. Schmidt
I. Korover
  • Function : Author
E.O. Cohen
  • Function : Author
H. Hakobyan
  • Function : Author
S. Adhikari
  • Function : Author
Giovanni Angelini
  • Function : Author
M. Battaglieri
  • Function : Author
A. Beck
  • Function : Author
I. Bedlinskiy
A.S. Biselli
  • Function : Author
S. Boiarinov
  • Function : Author
W. Brooks
  • Function : Author
V.D. Burkert
  • Function : Author
F. Cao
  • Function : Author
D.S. Carman
  • Function : Author
A. Celentano
T. Chetry
  • Function : Author
G. Ciullo
L. Clark
  • Function : Author
P.L. Cole
M. Contalbrigo
  • Function : Author
O. Cortes
  • Function : Author
V. Crede
  • Function : Author
R. Cruz Torres
  • Function : Author
A. d'Angelo
N. Dashyan
  • Function : Author
E. de Sanctis
  • Function : Author
R. de Vita
  • Function : Author
A. Deur
S. Diehl
  • Function : Author
C. Djalali
  • Function : Author
R. Dupre
Burcu Duran
  • Function : Author
H. Egiyan
A. El Alaoui
  • Function : Author
L. El Fassi
  • Function : Author
P. Eugenio
  • Function : Author
A. Filippi
  • Function : Author
T.A. Forest
  • Function : Author
G.P. Gilfoyle
K.L. Giovanetti
  • Function : Author
F.X. Girod
  • Function : Author
E. Golovatch
  • Function : Author
R.W. Gothe
K.A. Griffioen
  • Function : Author
L. Guo
  • Function : Author
K. Hafidi
  • Function : Author
C. Hanretty
  • Function : Author
N. Harrison
  • Function : Author
M. Hattawy
  • Function : Author
F. Hauenstein
  • Function : Author
T.B. Hayward
  • Function : Author
D. Heddle
  • Function : Author
K. Hicks
  • Function : Author
M. Holtrop
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
M.L. Kabir
  • Function : Author
D. Keller
M. Khachatryan
  • Function : Author
A. Khanal
  • Function : Author
M. Khandaker
W. Kim
  • Function : Author
F.J. Klein
  • Function : Author
V. Kubarovsky
  • Function : Author
S.E. Kuhn
  • Function : Author
L. Lanza
G. Laskaris
  • Function : Author
P. Lenisa
K. Livingston
  • Function : Author
I .J .D. Macgregor
  • Function : Author
N. Markov
  • Function : Author
B. Mckinnon
  • Function : Author
S. Mey-Tal Beck
  • Function : Author
M. Mirazita
  • Function : Author
V. Mokeev
R.A. Montgomery
  • Function : Author
A Movsisyan
  • Function : Author
B. Mustapha
  • Function : Author
P. Nadel-Turonski
  • Function : Author
G. Niculescu
  • Function : Author
M. Osipenko
A.I. Ostrovidov
  • Function : Author
M. Paolone
R. Paremuzyan
  • Function : Author
K. Park
  • Function : Author
E. Pasyuk
M. Patsyuk
  • Function : Author
W. Phelps
  • Function : Author
O. Pogorelko
  • Function : Author
Y. Prok
  • Function : Author
D. Protopopescu
M. Ripani
A. Rizzo
  • Function : Author
G. Rosner
  • Function : Author
P. Rossi
  • Function : Author
B.A. Schmookler
  • Function : Author
R.A. Schumacher
  • Function : Author
Y. Sharabian
  • Function : Author
Iu. Skorodumina
  • Function : Author
D. Sokhan
  • Function : Author
N. Sparveris
S. Stepanyan
  • Function : Author
S. Strauch
  • Function : Author
M. Taiuti
  • Function : Author
J.A. Tan
  • Function : Author
N. Tyler
  • Function : Author
M. Ungaro
  • Function : Author
H. Voskanyan
  • Function : Author
E. Voutier
X. Wei
  • Function : Author
M.H. Wood
  • Function : Author
N. Zachariou
J. Zhang
  • Function : Author
Z.W. Zhao
  • Function : Author
X. Zheng
  • Function : Author

Abstract

We measured the triple coincidence A(e,e′np) and A(e,e′pp) reactions on carbon, aluminum, iron, and lead targets at Q2>1.5  (GeV/c)2, xB>1.1 and missing momentum >400  MeV/c. This was the first direct measurement of both proton-proton (pp) and neutron-proton (np) short-range correlated (SRC) pair knockout from heavy asymmetric nuclei. For all measured nuclei, the average proton-proton (pp) to neutron-proton (np) reduced cross-section ratio is about 6%, in agreement with previous indirect measurements. Correcting for single-charge exchange effects decreased the SRC pairs ratio to ∼3%, which is lower than previous results. Comparisons to theoretical generalized contact formalism (GCF) cross-section calculations show good agreement using both phenomenological and chiral nucleon-nucleon potentials, favoring a lower pp to np pair ratio. The ability of the GCF calculation to describe the experimental data using either phenomenological or chiral potentials suggests possible reduction of scale and scheme dependence in cross-section ratios. Our results also support the high-resolution description of high-momentum states being predominantly due to nucleons in SRC pairs.

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Dates and versions

hal-01990679 , version 1 (30-10-2024)

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M. Duer, O. Hen, J.R. Pybus, E.P. Segarra, A. Hrnjic, et al.. Direct Observation of Proton-Neutron Short-Range Correlation Dominance in Heavy Nuclei. Physical Review Letters, 2019, 122 (17), pp.172502. ⟨10.1103/PhysRevLett.122.172502⟩. ⟨hal-01990679⟩
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