Differential cross section of γ n → K+ Σ- on bound neutrons with incident photons from 1.1 to 3.6 GeV

S. Anefalos Pereira; M. Mirazita; P. Rossi; E. De Sanctis; G. Niculescu; I. Niculescu; S. Stepanyan; K. P. Adhikari; M. Aghasyan; M. Anghinolfi; H. Baghdasaryan; J. Ball; M. Battaglieri; B. L. Berman; A. S. Biselli; C. Bookwalter; D. Branford; W. J. Briscoe; W. K. Brooks; V. D. Burkert; S. L. Careccia; D. S. Carman; P. L. Cole; P. Collins; V. Crede; A. D'Angelo; A. Daniel; N. Dashyan; R. De Vita; A. Deur; B. Dey; S. Dhamija; R. Dickson; C. Djalali; D. Doughty; M. Dugger; R. Dupre; A. El Alaoui; P. Eugenio; S. Fegan; T. A. Forest; M. Y. Gabrielyan; G. Gavalian; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; J. T. Goetz; W. Gohn; R. W. Gothe; K. A. Griffioen

doi:10.1016/j.physletb.2010.04.028

Differential cross section of γ n → K⁺ Σ^- on bound neutrons with incident photons from 1.1 to 3.6 GeV

S. Anefalos Pereira, M. Mirazita, P. Rossi, E. De Sanctis, G. Niculescu, I. Niculescu, S. Stepanyan, K. P. Adhikari, M. Aghasyan, M. Anghinolfi, H. Baghdasaryan, J. Ball, M. Battaglieri, B. L. Berman, A. S. Biselli, C. Bookwalter, D. Branford, W. J. Briscoe, W. K. Brooks, V. D. BurkertS. L. Careccia, D. S. Carman, P. L. Cole, P. Collins, V. Crede, A. D'Angelo, A. Daniel, N. Dashyan, R. De Vita, A. Deur, B. Dey, S. Dhamija, R. Dickson, C. Djalali, D. Doughty, M. Dugger, R. Dupre, A. El Alaoui, P. Eugenio, S. Fegan, T. A. Forest, M. Y. Gabrielyan, G. Gavalian, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, J. T. Goetz, W. Gohn, R. W. Gothe, K. A. Griffioen

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

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Abstract

Differential cross sections of the reaction γ d → K⁺ Σ^- (p) have been measured with the CLAS detector at Jefferson Lab using incident photons with energies between 1.1 and 3.6 GeV. This is the first complete set of strangeness photoproduction data on the neutron covering a broad angular range. At energies close to threshold and up to E_γ ∼ 1.8 GeV, the shape of the angular distribution is suggestive of the presence of s-channel production mechanisms. For E_γ > 1.8 GeV, a clear forward peak appears and becomes more prominent as the photon energy increases, suggesting contributions from t-channel production mechanisms. These data can be used to constrain future analysis of this reaction.

Original language	English (US)
Pages (from-to)	289-293
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	688
Issue number	4-5
DOIs	https://doi.org/10.1016/j.physletb.2010.04.028
State	Published - May 10 2010

Bibliographical note

Funding Information:
We would like to acknowledge the outstanding efforts of the staff of the Accelerator and the Physics Divisions at JLab that made this experiment possible. This work was supported in part by the Italian Istituto Nazionale di Fisica Nucleare , the French Centre National de la Recherche Scientifique and the Commissariat à l'Energie Atomique , the U.S. Department of Energy and the National Science Foundation , the National Research Foundation of Korea , and the UK Science and Technology Facilities Council (STFC) . The Southeastern Universities Research Association (SURA) operated the Thomas Jefferson National Accelerator Facility for the United States Department of Energy under contract DE-AC05-84ER40150 during this work.

Keywords

Hyperon
Missing resonances
Nucleon resonance
Photoproduction
Strangeness

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Pereira, S. A., Mirazita, M., Rossi, P., De Sanctis, E., Niculescu, G., Niculescu, I., Stepanyan, S., Adhikari, K. P., Aghasyan, M., Anghinolfi, M., Baghdasaryan, H., Ball, J., Battaglieri, M., Berman, B. L., Biselli, A. S., Bookwalter, C., Branford, D., Briscoe, W. J., Brooks, W. K., ... Griffioen, K. A. (2010). Differential cross section of γ n → K⁺ Σ^- on bound neutrons with incident photons from 1.1 to 3.6 GeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 688(4-5), 289-293. https://doi.org/10.1016/j.physletb.2010.04.028

Pereira, SA, Mirazita, M, Rossi, P, De Sanctis, E, Niculescu, G, Niculescu, I, Stepanyan, S, Adhikari, KP, Aghasyan, M, Anghinolfi, M, Baghdasaryan, H, Ball, J, Battaglieri, M, Berman, BL, Biselli, AS, Bookwalter, C, Branford, D, Briscoe, WJ, Brooks, WK, Burkert, VD, Careccia, SL, Carman, DS, Cole, PL, Collins, P, Crede, V, D'Angelo, A, Daniel, A, Dashyan, N, De Vita, R, Deur, A, Dey, B, Dhamija, S, Dickson, R, Djalali, C, Doughty, D, Dugger, M, Dupre, R, El Alaoui, A, Eugenio, P, Fegan, S, Forest, TA, Gabrielyan, MY, Gavalian, G, Gilfoyle, GP, Giovanetti, KL, Girod, FX, Goetz, JT, Gohn, W, Gothe, RW & Griffioen, KA 2010, 'Differential cross section of γ n → K⁺ Σ^- on bound neutrons with incident photons from 1.1 to 3.6 GeV', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 688, no. 4-5, pp. 289-293. https://doi.org/10.1016/j.physletb.2010.04.028

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title = "Differential cross section of γ n → K+ Σ- on bound neutrons with incident photons from 1.1 to 3.6 GeV",

abstract = "Differential cross sections of the reaction γ d → K+ Σ- (p) have been measured with the CLAS detector at Jefferson Lab using incident photons with energies between 1.1 and 3.6 GeV. This is the first complete set of strangeness photoproduction data on the neutron covering a broad angular range. At energies close to threshold and up to Eγ ∼ 1.8 GeV, the shape of the angular distribution is suggestive of the presence of s-channel production mechanisms. For Eγ > 1.8 GeV, a clear forward peak appears and becomes more prominent as the photon energy increases, suggesting contributions from t-channel production mechanisms. These data can be used to constrain future analysis of this reaction.",

keywords = "Hyperon, Missing resonances, Nucleon resonance, Photoproduction, Strangeness",

author = "Pereira, {S. Anefalos} and M. Mirazita and P. Rossi and {De Sanctis}, E. and G. Niculescu and I. Niculescu and S. Stepanyan and Adhikari, {K. P.} and M. Aghasyan and M. Anghinolfi and H. Baghdasaryan and J. Ball and M. Battaglieri and Berman, {B. L.} and Biselli, {A. S.} and C. Bookwalter and D. Branford and Briscoe, {W. J.} and Brooks, {W. K.} and Burkert, {V. D.} and Careccia, {S. L.} and Carman, {D. S.} and Cole, {P. L.} and P. Collins and V. Crede and A. D'Angelo and A. Daniel and N. Dashyan and {De Vita}, R. and A. Deur and B. Dey and S. Dhamija and R. Dickson and C. Djalali and D. Doughty and M. Dugger and R. Dupre and {El Alaoui}, A. and P. Eugenio and S. Fegan and Forest, {T. A.} and Gabrielyan, {M. Y.} and G. Gavalian and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Girod, {F. X.} and Goetz, {J. T.} and W. Gohn and Gothe, {R. W.} and Griffioen, {K. A.}",

note = "Funding Information: We would like to acknowledge the outstanding efforts of the staff of the Accelerator and the Physics Divisions at JLab that made this experiment possible. This work was supported in part by the Italian Istituto Nazionale di Fisica Nucleare , the French Centre National de la Recherche Scientifique and the Commissariat {\`a} l'Energie Atomique , the U.S. Department of Energy and the National Science Foundation , the National Research Foundation of Korea , and the UK Science and Technology Facilities Council (STFC) . The Southeastern Universities Research Association (SURA) operated the Thomas Jefferson National Accelerator Facility for the United States Department of Energy under contract DE-AC05-84ER40150 during this work.",

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doi = "10.1016/j.physletb.2010.04.028",

language = "English (US)",

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pages = "289--293",

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T1 - Differential cross section of γ n → K+ Σ- on bound neutrons with incident photons from 1.1 to 3.6 GeV

AU - Pereira, S. Anefalos

AU - Mirazita, M.

AU - Rossi, P.

AU - De Sanctis, E.

AU - Niculescu, G.

AU - Niculescu, I.

AU - Stepanyan, S.

AU - Adhikari, K. P.

AU - Aghasyan, M.

AU - Anghinolfi, M.

AU - Baghdasaryan, H.

AU - Ball, J.

AU - Battaglieri, M.

AU - Berman, B. L.

AU - Biselli, A. S.

AU - Bookwalter, C.

AU - Branford, D.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Burkert, V. D.

AU - Careccia, S. L.

AU - Carman, D. S.

AU - Cole, P. L.

AU - Collins, P.

AU - Crede, V.

AU - D'Angelo, A.

AU - Daniel, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - Deur, A.

AU - Dey, B.

AU - Dhamija, S.

AU - Dickson, R.

AU - Djalali, C.

AU - Doughty, D.

AU - Dugger, M.

AU - Dupre, R.

AU - El Alaoui, A.

AU - Eugenio, P.

AU - Fegan, S.

AU - Forest, T. A.

AU - Gabrielyan, M. Y.

AU - Gavalian, G.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Goetz, J. T.

AU - Gohn, W.

AU - Gothe, R. W.

AU - Griffioen, K. A.

N1 - Funding Information: We would like to acknowledge the outstanding efforts of the staff of the Accelerator and the Physics Divisions at JLab that made this experiment possible. This work was supported in part by the Italian Istituto Nazionale di Fisica Nucleare , the French Centre National de la Recherche Scientifique and the Commissariat à l'Energie Atomique , the U.S. Department of Energy and the National Science Foundation , the National Research Foundation of Korea , and the UK Science and Technology Facilities Council (STFC) . The Southeastern Universities Research Association (SURA) operated the Thomas Jefferson National Accelerator Facility for the United States Department of Energy under contract DE-AC05-84ER40150 during this work.

PY - 2010/5/10

Y1 - 2010/5/10

N2 - Differential cross sections of the reaction γ d → K+ Σ- (p) have been measured with the CLAS detector at Jefferson Lab using incident photons with energies between 1.1 and 3.6 GeV. This is the first complete set of strangeness photoproduction data on the neutron covering a broad angular range. At energies close to threshold and up to Eγ ∼ 1.8 GeV, the shape of the angular distribution is suggestive of the presence of s-channel production mechanisms. For Eγ > 1.8 GeV, a clear forward peak appears and becomes more prominent as the photon energy increases, suggesting contributions from t-channel production mechanisms. These data can be used to constrain future analysis of this reaction.

AB - Differential cross sections of the reaction γ d → K+ Σ- (p) have been measured with the CLAS detector at Jefferson Lab using incident photons with energies between 1.1 and 3.6 GeV. This is the first complete set of strangeness photoproduction data on the neutron covering a broad angular range. At energies close to threshold and up to Eγ ∼ 1.8 GeV, the shape of the angular distribution is suggestive of the presence of s-channel production mechanisms. For Eγ > 1.8 GeV, a clear forward peak appears and becomes more prominent as the photon energy increases, suggesting contributions from t-channel production mechanisms. These data can be used to constrain future analysis of this reaction.

KW - Hyperon

KW - Missing resonances

KW - Nucleon resonance

KW - Photoproduction

KW - Strangeness

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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