Inclusive photoproduction of δ(980) and B(1235) at high xF

Lassalle, J. C.; Patrick, G. N.; Storr, K.M.; Atkinson, M.; Axon, T.; Barberis, D.; Brodbeck, T. J.; Brookes, Graham; Bunn, J.; Bussey, P.; Clegg, A.B.; Dainton, J. B.; Davenport, M.; Dickinson, B.; Diekmann, B.; Donnachie, A.; Ellison, R. J.; Flower, P.; Flynn, Phil; Galbraith, W.; Héinloth, K.; Henderson, R. C. W.; Hughes-Jones, R. E.; Hutton, J. S.; Ibbotson, M.; Jakob, H.‐P.; Jung, M.; Kumar, B. R.; Laberrigue, J.; Lafferty, G.; Lane, J.B.; Lévy, J. M.; Liebenau, V.; McClatchey, Richard; Mercer, D.; Morris, J. A. G.; Morris, J. V.; Newton, D.; Paterson, C.; Paul, E.; Raine, C.; Reidenbach, M.; Rotscheidt, H.; Schloesser, A.; Sharp, P.; Skillicorn, I. O.; Thompson, R. J.; Vaissière, Ch De La; Waite, A. P.; Worsell, M. F.; Yiou, T. P.

doi:10.1016/0370-2693(84)91939-7

Cited by 25 publications

(5 citation statements)

References 6 publications

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“…We note that an understanding of the a 0 (980) production mechanism may also give interesting information on its internal structure. For example, the WA57 collaboration has interpreted the relatively strong production of the a ± 0 (980) in photon induced reactions at energies of 25 -55 GeV as evidence for a qq state rather than a qqqq state [25]. This argument can also be used here.…”

Section: The Regge-pole Modelmentioning

confidence: 97%

“…Some crude estimates can only be done by comparing the a 0 production with ρ and ω production. For example, the WA57 collaboration has measured inclusive photoproduction of a ± 0 (980) mesons at photon energies of 25 -55 GeV [25]. It was found that the cross section of this process is rather large and about ∼ 1/6 of the cross sections for the corresponding non-diffractive production of leading ρ 0 , ω, ρ + and ρ − mesons.…”

Section: An Effective Lagrangian Approachmentioning

confidence: 99%

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Production of a0-mesons in the reactions πN↦a0N and pp↦da0 + at GeV energies

et al. 2000

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We investigate the reactions πN → a0N and pp → da + 0 near threshold and at medium energies. An effective Lagragian approach and the Regge pole model are applied to analyze different contributions to the cross section of the reaction πN → a0N . These results are used to calculate the differential and total cross sections of the reaction pp → da + 0 within the framework of the two-step model in which two nucleons produce an a0-meson via π -meson exchange and fuse to a deuteron. The necessity of new measurements on a0 production and branching fractions (of its decay to the KK and πη channels) is emphasized for clarifying the a0 structure. Detailed predictions for the reaction pp → da + 0 are presented for the energy regime of the proton synchrotron COSY-Jülich. PACS. 25.10.+s Nuclear reactions involving few-nucleon systems -13.75.-n Hadron induced reactions -13.60.Le Meson production

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Section: The Regge-pole Modelmentioning

confidence: 97%

Section: An Effective Lagrangian Approachmentioning

confidence: 99%

Production of a0-mesons in the reactions πN↦a0N and pp↦da0 + at GeV energies

et al. 2000

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“…Such measurements might give new information on the a 0 structure. According to Atkinson et al [56] a relatively strong production of the a 0 (the same as for the b 1 (1235)) in non-diffractive reactions can be considered as evidence for a qq state rather than a qqqq state. For example, the cross section of a 0 production in γp reactions at 25-50 GeV is about 1/6 of the cross sections for ρ and ω production.…”

Section: Concluding Remarks On a 0 Production In Pn Reactionsmentioning

confidence: 99%

Near-threshold production of a 0(980) mesons in πN and NN collisions and a 0-f 0 mixing

et al. 2003

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We consider near-threshold a 0 (980)-meson production in πN and N N collisions. An effective Lagrangian approach with one-pion exchange is applied to analyze different contributions to the cross section for different isospin channels. The Reggeon exchange mechanism is also evaluated for comparison. The results from πN reactions are used to calculate the contribution of the a 0 meson to the cross sections and invariant KK mass distributions of the reactions pp → pnK +K 0 and pp → ppK + K − . It is found that the experimental observation of a + 0 mesons in the reaction pp → pnK +K 0 is much more promising than the observation of a 0 0 mesons in the reaction pp → ppK + K − . Effects of isospin violation in the reactions pN → da 0 , pd → 3 He/ 3 H a 0 , and dd → 4 He a 0 , which are induced by a 0 (980)f 0 (980) mixing, are also analyzed.

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“…Such measurements might give new information on the a 0 structure. According to Atkinson et al [53] a relatively strong production of the a 0 (the same as for the b 1 (1235)) in non-diffractive reactions can be considered as evidence for a qq state rather than a qqqq state. For example the cross section of a 0 production in γp reactions at 25-50 GeV is about 1/6 of the cross sections for ρ and ω production.…”

Section: Discussionmentioning

confidence: 99%

Production of a0 mesons in pp and pn reactions

Bratkovskaya

Grishina

Kondratyuk

et al. 2002

J. Phys. G: Nucl. Part. Phys.

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Abstract. We investigate the cross section for the reaction N N → N N a 0 near threshold and at medium energies. An effective Lagrangian approach with one-pion exchange is applied to analyze different contributions to the cross section for different isospin channels. The Reggeon exchange mechanism is also considered. The results are used to calculate the contribution of the a 0 meson to the cross sections and invariant KK mass distributions of the reactions pp → pnK +K 0 and pp → ppK + K − . It is found that the experimental observation of a + 0 mesons in the reaction pp → pnK +K 0 is much more promising than the observation of a 0 0 mesons in the reaction pp → ppK + K − . PACS

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Inclusive photoproduction of δ(980) and B(1235) at high xF

Cited by 25 publications

References 6 publications

Production of a0-mesons in the reactions πN↦a0N and pp↦da0 + at GeV energies

Production of a0-mesons in the reactions πN↦a0N and pp↦da0 + at GeV energies

Near-threshold production of a 0(980) mesons in πN and NN collisions and a 0-f 0 mixing

Production of a0 mesons in pp and pn reactions

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