Differential cross sections and spin density matrix elements for the reaction<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>γ</mml:mi><mml:mi>p</mml:mi><mml:mo>→</mml:mo><mml:mi>p</mml:mi><mml:mi>ω</mml:mi></mml:mrow></mml:math>

Williams, M.; Applegate, Douglas; Bellis, M.; Meyer, C. A.; Adhikari, K. P.; Anghinolfi, M.; Baghdasaryan, H.; Ball, J.; Battaglieri, M.; Bedlinskiy, I.; Berman, B.L.; Biselli, A. S.; Bookwalter, C.; Briscoe, W. J.; Brooks, W. K.; Burkert, V. D.; Careccia, S. L.; Carman, D. S.; Cole, P. L.; Collins, P.; Credé, V.; D’Angelo, A.; Daniel, A.; Vita, R. De; Sanctis, E. De; Deur, A.; Dey, B.; Dhamija, S.; Dickson, R.; Djalali, C.; Dodge, G. E.; Doughty, D.; Dugger, M.; Dupré, R.; Alaoui, A. El; Elouadrhiri, L.; Eugenio, P.; Fedotov, G.; Fegan, S.; Fradi, A.; Gabrielyan, M.; Garçon, M.; Gevorgyan, N.; Gilfoyle, G. P.; Giovanetti, K. L.; Girod, F. X.; Gohn, W.; Golovatch, E.; Gothe, R. W.; Griffioen, K. A.; Guidal, M.; Guo, L.; Hafidi, K.; Hakobyan, H.; Hanretty, C.; Hassall, N.; Hicks, K.; Holtrop, M.; Ilieva, Y.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jawalkar, S. S.; Jo, H. S.; Johnstone, J. R.; Joo, K. S.; Keller, D.; Khandaker, M.; Khetarpal, P.; Kim, W.; Klein, A.; Klein, F. J.; Krahn, Z.; Kubarovsky, V.; Kuleshov, S.; Kuznetsov, V.; Livingston, K.; Lu, H. Y.; Mayer, M.; McAndrew, J.; McCracken, M. E.; McKinnon, B.; Mikhailov, K.; Mirazita, M.; Mokeev, V.; Moreno, B.; Moriya, K.; Morrison, B.; Moutarde, H.; Munévar, E.; Nadel-Turoński, P.; Nepali, C. S.; Niccolai, S.; Niculescu, G.; Niculescu, I.; Niroula, M. R.; Niyazov, R. A.; Osipenko, M.; Ostrovidov, A. I.; Paris, Mark W.; Park, K.; Park, S.; Pasyuk, E.; Pereira, S. Anefalos; Perrin, Y.; Pisano, S.; Pogorelko, O.; Pozdniakov, S.; Price, J. W.; Procureur, S.; Protopopescu, D.; Raue, B. A.; Ricco, G.; Ripani, M.; Ritchie, Barry; Rosner, G.; Rossi, P.; Sabatié, F.; Saini, M. S.; Salamanca, J.; Salgado, C.; Schott, D.; Schumacher, R. A.; Seraydaryan, H.; Sharabian, Y. G.; Smith, E. S.; Sober, D. I.; Sokhan, D.; Stepanyan, S.; Stoler, P.; Strakovsky, I. I.; Strauch, S.; Taiuti, M.; Tedeschi, D. J.; Tkachenko, S.; Ungaro, M.; Vineyard, M. F.; Voutier, E.; Watts, D. P.; Weinstein, L. B.; Weygand, D. P.; Wood, M. H.; Zhang, J.; Zhao, B.

doi:10.1103/physrevc.80.065208

Cited by 61 publications

(34 citation statements)

References 248 publications

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“…bin. A similar approach was also followed in two other previous CLAS analyses of the ωp [22] and K + [25] photoproduction channels and found to give reasonable results.…”

Section: B Recoil Polarizationsmentioning

confidence: 54%

“…In addition to the observables reported here, the LEPS Collaboration [17] and the GRAAL Collaboration [19] have also measured photon-beam asymmetries for this channel, while the FROST experiment at CLAS/JLab [21] will measure several other single-and double-polarization observables. The present work is part of a larger program within the CLAS Collaboration to make precision measurements for several photoproduction channels [22][23][24][25], with the goal of performing a coupled-channels partial-wave analysis (PWA).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Differential cross sections and recoil polarizations for the reactionγp→K+Σ0

Dey¹,

Meyer²,

Bellis³

et al. 2010

Phys. Rev. C

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High-statistics measurements of differential cross sections and recoil polarizations for the reaction γp → K + 0 have been obtained using the CLAS detector at Jefferson Lab. We cover center-of-mass energies ( √ s) from 1.69 to 2.84 GeV, with an extensive coverage in the K + production angle. Independent measurements were made using the K + pπ − (γ ) and K + p(π − , γ ) final-state topologies, and were found to exhibit good agreement. Our differential cross sections show good agreement with earlier CLAS, SAPHIR, and LEPS results, while offering better statistical precision and a 300-MeV increase in √ s coverage. Above √ s ≈ 2.5 GeV, tand u-channel Regge scaling behavior can be seen at forward and backward angles, respectively. Our recoil polarization (P ) measurements represent a substantial increase in kinematic coverage and enhanced precision over previous world data. At forward angles, we find that P is of the same order of magnitude but opposite sign as P , in agreement with the static SU(6) quark model prediction of P ≈ −P . This expectation is violated in some mid-and backward-angle kinematic regimes, where P and P are of similar magnitudes but also have the same signs. In conjunction with several other meson photoproduction results recently published by CLAS, the present data will help constrain the partial-wave analyses being performed to search for missing baryon resonances.

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“…bin. A similar approach was also followed in two other previous CLAS analyses of the ωp [22] and K + [25] photoproduction channels and found to give reasonable results.…”

Section: B Recoil Polarizationsmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Differential cross sections and recoil polarizations for the reactionγp→K+Σ0

Dey¹,

Meyer²,

Bellis³

et al. 2010

Phys. Rev. C

Self Cite

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show abstract

“…4 indicate constructive and destructive interferences of nonresonant and resonant amplitudes below [27]. Notation is as in Fig.…”

Section: B Analysis On the Composition Of The Bump Structurementioning

confidence: 99%

Analysis of the near-threshold peak structure in the differential cross section ofφ-meson photoproduction: Indication of a missing resonance with non-negligible strangeness content

Kiswandhi

Yang

2012

Phys. Rev. C

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The details of the analysis of the near-threshold bump structure in the forward differential cross section of the φ-meson photoproduction to determine whether it is a signature of a resonance, together with more extensive results, are presented. The analysis is carried out in an effective Lagrangian approach which includes Pomeron and (π, η) exchanges in the t channel and contributions from the sand u-channel excitations of a postulated nucleon resonance. In addition to the differential cross sections, we use the nine spin-density matrix elements as recently measured, instead of the φ-meson decay angular distributions which depend only on six spin-density matrix elements as was done before, to constrain the resonance parameters. We conclude that indeed the nonmonotonic behavior, along with the other experimental data as reported by LEPS, can only be explained with an assumption of the excitation of a resonance of spin 3/2, as previously reported. However, both parities of (±) can account for the data equally well with almost identical mass of 2.08 ± 0.04 GeV and width of 0.501 ± 0.117 and 0.570 ± 0.159 for 3/2 + and 3/2 − , respectively. The ratio of the helicity amplitudes A 1/2 /A 3/2 calculated from the resulting coupling constants differs in sign from that of the known D 13 (2080). More experimental data on single and double polarization observables are needed to resolve the parity. We further find that with an assumption of large values of the OZI-evading parameters x OZI = 12 for J P = 3/2 − and x OZI = 9 for J P = 3/2 + , the discrepancy between the recent experimental data on ω-meson photoproduction and the theoretical model can be considerably reduced. We argue that the large value of x OZI indicates that the postulated resonance contains a non-negligible amount of strangeness content.

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“…The CLAS collaboration reported a high-statistics study of ω photoproduction [133,134] and claimed evidence for several N * s decaying into Nω. The A2-collaboration at MAMI reported differential cross sections from threshold to E γ = 1.4 GeV with a 15 MeV binning and full angular coverage [135].…”

Section: Photoproduction Of ω Mesonsmentioning

confidence: 99%

Partial wave analysis

2017

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Abstract. The project A.2 of the SFB/TR16 "Subnuclear Structure of Matter" aimed at a combined multichannel partial wave analysis of all or of most data on pion and photo-induced reactions for invariant masses from the Δ(1232) region to 2300 MeV. In this review the most important results are presented. It is shown that the data and their partial wave analysis have improved our understanding of the dynamics of excited light-quark baryons significantly.

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Differential cross sections and spin density matrix elements for the reactionγp→pω

Cited by 61 publications

References 248 publications

Differential cross sections and recoil polarizations for the reactionγp→K+Σ0

Differential cross sections and recoil polarizations for the reactionγp→K+Σ0

Analysis of the near-threshold peak structure in the differential cross section ofφ-meson photoproduction: Indication of a missing resonance with non-negligible strangeness content

Partial wave analysis

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