Hard Two-Body Photodisintegration of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi>He</mml:mi><mml:mprescripts/><mml:none/><mml:mn>3</mml:mn></mml:mmultiscripts></mml:math>

Pomerantz, I.; Ilieva, Y.; Gilman, R.; Higinbotham, D. W.; Piasetzky, E.; Strauch, S.; Adhikari, K. P.; Aghasyan, M.; Allada, K.; Amaryan, M. J.; Pereira, S. Anefalos; Anghinolfi, M.; Baghdasaryan, H.; Ball, J.; Baltzell, N. A.; Battaglieri, M.; Batourine, V.; Beck, A.; Beck, S. May-Tal; Bedlinskiy, I.; Berman, B. L.; Biselli, A. S.; Boeglin, W.; Bono, J.; Bookwalter, C.; Boiarinov, S.; Briscoe, W. J.; Brooks, W. K.; Bubis, N.; Burkert, Volker; Camsonne, A.; Canan, M.; Carman, D. S.; Celentano, A.; Chandavar, S.; Charles, G.; Chirapatpimol, K.; Cisbani, E.; Cole, P. L.; Contalbrigo, M.; Credé, V.; Cusanno, F.; D’Angelo, A.; Daniel, A.; Dashyan, N.; Jager, C. W. de; Vita, R. De; Sanctis, E. De; Deur, A.; Djalali, C.; Dodge, G. E.; Doughty, D.; Dupré, R.; Dutta, C.; Egiyan, H.; Alaoui, A. El; Fassi, L. El; Eugenio, P.; Fedotov, G.; Fegan, S.; Fleming, J. A.; Fradi, A.; Garibaldi, F.; Geagla, O.; Gevorgyan, N.; Giovanetti, K. L.; Girod, F. X.; Glister, J.; Goetz, J. T.; Gohn, W.; Golovatch, E.; Gothe, R. W.; Griffioen, K. A.; Guegan, B.; Guidal, M.; Guo, L.; Hafidi, K.; Hakobyan, H.; Harrison, N.; Heddle, D.; Hicks, K.; Ho, D.; Holtrop, M.; Hyde‐Wright, C. E.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jiang, X.; Jo, H. S.; Joo, K.; Katramatou, A. T.; Keller, D.; Khandaker, M.; Khetarpal, P.; Khrosinkova, E.; Kim, A.; Kim, W.; Klein, F. J.; Koirala, S.; Kubarovsky, A.; Kubarovsky, V.; Kuleshov, S.; Kvaltine, N. D.; Lee, B.; LeRose, J.; Lewis, S.; Lindgren, R.; Livingston, K.; Lu, H. Y.; MacGregor, I. J. D.; Mao, Y.; Martinez, D.; Mayer, M.; McCullough, Edwin C.; McKinnon, B.; Meekins, D.; Meyer, C. A.; Michaels, R.; Mineeva, T.; Mirazita, M.; Moffit, B.; Mokeev, V.; Montgomery, R. A.; Moutarde, H.; Munévar, E.; Camacho, C. Muñoz; Nadel-Turoński, P.; Nasseripour, R.; Nepali, C. S.; Niccolai, S.; Niculescu, G.; Niculescu, I.; Osipenko, M.; Ostrovidov, A. I.; Pappalardo, L. L.; Paremuzyan, R.; Park, K.; Park, S.; Petratos, G. G.; Phelps, E.; Pisano, S.; Pogorelko, O.; Pozdniakov, S.; Procureur, S.; Protopopescu, D.; Puckett, A. J. R.; Qian, X.; Qiang, Y.; Ricco, G.; Rimal, D.; Ripani, M.; Ritchie, Barry; Rodríguez, I.; Ron, G.; Rosner, G.; Rossi, P.; Sabatié, F.; Saha, A.; Saini, M. S.; Sarty, A. J.; Sawatzky, B.; Saylor, N. A.; Schott, D.; Schulte, E.; Schumacher, R. A.; Seder, E.; Seraydaryan, H.; Shneor, R.; Smith, G. D.; Sokhan, D.; Sparveris, N.; Stepanyan, S.; Stepanyan, S.; Stoler, P.; Subedi, R.; Sulkosky, V.; Taiuti, M.; Tang, W.; Taylor, C.; Tkachenko, S.; Ungaro, M.; Vernarsky, B.; Vineyard, M. F.; Voskanyan, H.; Voutier, E.; Walford, N. K.; Wang, Y.; Watts, D. P.; Weinstein, Lawrence; Weygand, D. P.; Wojtsekhowski, B.; Wood, M. H.; Yan, Xiao-Bo; Huang, Yao; Zachariou, N.; Zhan, X.; Zhang, J.; Zhao, Z. W.; Zheng, X.; Zonta, I.

doi:10.1103/physrevlett.110.242301

Cited by 5 publications

(7 citation statements)

References 39 publications

(59 reference statements)

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“…3). The analysis determined a scaling power of N = 17 ± 1, which is well in agreement with the predictions of dimensional scaling [6]. The discrepancy between DAPHNE and JLab data is attributed to the large systematic uncertainty of the correction factor 2 of the DAPHNE data when the deuteron does not stop in the detector [6].…”

Section: Studies Of the Transition Regionsupporting

confidence: 69%

Study of the Few Nucleon Systems at CLAS

Zachariou¹

2017

Few-Body Syst

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The study of few nucleon systems with electromagnetic probes is an essential component of the scientific program carried out at the Thomas Jefferson National Accelerator Facility (JLab). Here we present measurements of exclusive reactions on light nuclei using real photon beams with energies up to 3 GeV and the CEBAF Large Acceptance Spectrometer (CLAS), a nearly 4π magnetic spectrometer, in order to study the properties of strongly interacting matter and the transition from hadronic (i.e in terms of nucleons and mesons) to partonic (in terms of quark and gluons) degrees of freedom in nuclear interactions. We discuss the progress made in understanding the relevant degrees of freedom using polarisation observables and cross sections of deuteron and 3 He photodisintegration in the few-GeV photon-energy region. In addition, recent high-statistics experiments with the CLAS detector have provided us with sufficient counting rates to study the effects of initial-and final-state interactions in reactions off the deuteron. Such data allow us to extract a large set of polarisation observables for final-state interactions in hyperon photoproduction and to study the properties of the hyperon-nucleon interaction. Initial-state effects are studied by mapping the dependence of experimental observables on the spectator-nucleon momentum. We also present recent results for polarisation observables for quasi-free K + Λ off the bound proton in a deuteron as well as for final-state interactions in the reaction γ d → K + Λn, and will discuss their impact on hyperon-nucleon studies.

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Section: Studies Of the Transition Regionsupporting

confidence: 69%

Study of the Few Nucleon Systems at CLAS

Zachariou¹

2017

Few-Body Syst

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“…In order to get more insight into the underlying dynamics, new measurements were suggested to study photodisintegration of the diproton in the 3 He at Jlab [22] and the results compatible with the CCR behaviour given by Eq. (1) were obtained for 3 He(γ, pp)n [23] and recently for γ 3 He → dp [24,25].…”

Section: Existing Datamentioning

confidence: 75%

Search for scaling onset in exclusive reactions with the lightest nuclei

Uzikov

2016

Eur. Phys. J. A

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Abstract. The dimensional scaling of the differential cross sections of binary reactions dσ/dt ∼ s −(n−2) , where n is given by constituent quark counting rules, was predicted for asymptotically high energies √ s ≫ mi and transferred momenta −t ≫ mi at t/s = const (here s and t are the Mandelstam variables and mi denotes a hadron mass), but manifested itself at surprisingly moderate energies of few GeV at large fixed cms angles θcm ∼ 90• . This behaviour is observed not only in reactions with free hadrons, but with the deuteron and 3 He too both for electromagnetic and pure hadronic interactions. One may suppose that observed scaling points out to effective restoration of near-conformal and, probably, chiral symmetry in these processes. A systematical experimental study of the scaling behaviour of the reactions with the deuteron, 3 H, 3 He, and 4 He nuclei is still absent. We consider a possibility to carry out this study in dd collisions at the JINR Nuclotron.PACS. 25.10.+s, Nuclear reactions involving few-nucleon systems -24.85.+p, Quarks, gluons, and QCD in nuclear reactions 25.55.-e, 2H-induced reactions

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“…5 we present the comparison of our calculation of the energy dependence of the s 17 scaled differential cross section at θ cm = 90 0 with the data of Ref. [18]. The shaded area represents the error due to the above discussed fitting of the elastic pd → pd cross sections.…”

Section: Final Expression For the Differential Cross Sectionmentioning

confidence: 91%

“…Using above relations one approximates dβ 3 β 3 ≈ dp lab 3z m N and α 3 ≈ 1 2 + p 2,z 2m N in Eq. (18). Introducing also the relative three-momentum in the 2, 3 nucleon system as…”

Section: Calculation Of the Light-front Transition Spectral Functionmentioning

confidence: 99%

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Hard photodisintegration of He3 into a pd pair

Maheswari

Sargsian

2017

Phys. Rev. C

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The recent measurements of high energy photodisintegration of the 3 He nucleus to the pd pair at 90 0 center of mass demonstrated an energy scaling consistent with the quark counting rule with unprecedentedly large exponent of s −17 . To understand the underlying mechanism of this process we extended the theoretical formalism of hard rescattering mechanism (HRM) to calculate the γ 3 He→ pd reaction. In HRM the incoming high energy photon strikes a quark from one of the nucleons in the target which subsequently undergoes hard rescattering with the quarks from the other nucleons generating hard two-body system in the final state of the reaction. Within the HRM we derived the parameter free expression for the differential cross section of the reaction, which is expressed through the 3 He→ pd transition spectral function, cross section of hard pd → pd scattering and the effective charge of the quarks being interchanged during the hard rescattering process. The numerical estimates of all these factors resulted in the magnitude of the cross section which is surprisingly in a good agreement with the data.

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Hard Two-Body Photodisintegration ofHe3

Cited by 5 publications

References 39 publications

Study of the Few Nucleon Systems at CLAS

Study of the Few Nucleon Systems at CLAS

Search for scaling onset in exclusive reactions with the lightest nuclei

Hard photodisintegration of He3 into a pd pair

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