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287 results on '"Hourany, E."'

1. Measurement of beam-recoil observables Ox, Oz and target asymmetry for the reaction gamma p -> K Lambda

Author

Lleres, A., Bartalini, O., Bocquet, JP., Calvat, P., Capogni, M., Casano, L., D'Angelo, A., Didelez, JP., DiSalvo, R., Fantini, A., Franco, D., Gaulard, C., Gervino, G., Ghio, F., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kunne, R., Kuznetsov, V., Lapik, A., LeviSandri, P., Mammoliti, F., Mandaglio, G., Moricciani, D., Mushkarenkov, AN., Nedorezov, V., Nicoletti, L., Perrin, C., Randieri, C., Rebreyend, D., Renard, F., Rudnev, N., Russew, T., Russo, G., Schaerf, C., Sperduto, ML., Sutera, MC., and Turinge, A.

Subjects
Nuclear Experiment
Abstract

The double polarization (beam-recoil) observables Ox and Oz have been measured for the reaction gamma p -> K Lambda from threshold production to Egamma = 1500 MeV. The data were obtained with the linearly polarized beam of the GRAAL facility. Values for the target asymmetry T could also be extracted despite the use of an unpolarized target. Analyses of our results by two isobar models tend to confirm the necessity to include new or poorly known resonances in the 1900 MeV mass region., Comment: 19 pages, 15 figures, 3 tables

Published
2008
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2. Measurement of eta photoproduction on the proton from threshold to 1500 MeV

Author

Bartalini, O., Bellini, V., Bocquet, J. P., calvat, P., Capogni, M., Casano, L., Castoldi, M., D'Angelo, A., Didelez, J. P., Di Salvo, R., Fantini, A., Franco, D., Gaulard, C., Gervino, G., Ghio, F., Giardina, G., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kunne, R., Lapik, A., Sandri, P. Levi, Lleres, A., Mammoliti, F., Mandaglio, G., Moricciani, D., Mushkarenkov, A. N., Nedorezov, V., Nicoletti, L., Perrin, C., Randieri, C., Rebreyend, D., Renard, F., Rudnev, N., Russew, T., Russo, G., Schaerf, C., Sperduto, M. L., Sutera, M. C., Turinge, A., and Vegna, V.

Subjects
Nuclear Experiment
Abstract

Beam asymmetry and differential cross section for the reaction gamma+p->eta+p were measured from production threshold to 1500 MeV photon laboratory energy. The two dominant neutral decay modes of the eta meson, eta->2g and eta->3pi0, were analyzed. The full set of measurements is in good agreement with previously published results. Our data were compared with three models. They all fit satisfactorily the results but their respective resonance contributions are quite different. The possible photoexcitation of a narrow state N(1670) was investigated and no evidence was found., Comment: 18 pages, 14 figures, 4 tables Submitted to EPJA

Published
2007
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3. Lowering the Light Speed Isotropy Limit: European Synchrotron Radiation Facility Measurements

Author

Gurzadyan, V. G., Bocquet, J. -P., Kashin, A., Margarian, A., Bartalini, O., Bellini, V., Castoldi, M., D'Angelo, A., Didelez, J. -P., Di Salvo, R., Fantini, A., Gervino, G., Ghio, F., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Knyazyan, S., Kouznetsov, V., Kunne, R., Lapik, A., Sandri, P. Levi, Lleres, A., Mehrabyan, S., Moricciani, D., Nedorezov, V., Perrin, C., Rebreyend, D., Russo, G., Rudnev, N., Schaerf, C., Sperduto, M. -L., Sutera, M. -C., and Turinge, A.

Subjects
Astrophysics, Physics - Accelerator Physics
Abstract

The measurement of the Compton edge of the scattered electrons in GRAAL facility in European Synchrotron Radiation Facility (ESRF) in Grenoble with respect to the Cosmic Microwave Background dipole reveals up to 10 sigma variations larger than the statistical errors. We now show that the variations are not due to the frequency variations of the accelerator. The nature of Compton edge variations remains unclear, thus outlining the imperative of dedicated studies of light speed anisotropy.

Published
2007
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4. Eta photoproduction off the neutron at GRAAL

Author

Kuznetsov, V., Bartalini, O., Bellini, V., Castoldi, M., D'Angelo, A., Didelez, J. -P., Di Salvo, R., Fantini, A., Franco, D., Gervino, G., Ghio, F., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kunne, R., Lapik, A., Sandri, P. Levi, Moricciani, D., Nicoletti, L., Randieri, C., Rudnev, N., Russo, G., Schaerf, C., Sperduto, M. -L., Sutera, M. -C., and Turinge, A.

Subjects
High Energy Physics - Experiment
Abstract

The gamma n -> eta n quasi-free cross section reveals a resonant structure at W ~ 1.675 GeV. This structure may be a manifestation of a baryon resonance. A priori its properties, the possibly narrow width and the strong photocoupling to the neutron, look surprising. This structure may also signal the existence of a narrow state., Comment: To appear in Proceedings of Workshop on the Physics of Excited Nucleons NSTAR2005, 12 - 15 October 2005, Tallahassee, Florida, USA

Published
2005
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5. Probing the Light Speed Anisotropy with respect to the Cosmic Microwave Background Radiation Dipole

Author

Gurzadyan, V. G., Bocquet, J. -P., Kashin, A., Margarian, A., Bartalini, O., Bellini, V., Castoldi, M., D'Angelo, A., Didelez, J. -P., Di Salvo, R., Fantini, A., Gervino, G., Ghio, F., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Knyazyan, S., Kouznetsov, V., Kunne, R., Lapik, A., Sandri, P. Levi, Lleres, A., Mehrabyan, S., Moricciani, D., Nedorezov, V., Perrin, C., Rebreyend, D., Russo, G., Rudnev, N., Schaerf, C., Sperduto, M. -L., Sutera, M. -C., and Turinge, A.

Subjects
Astrophysics, Physics - Accelerator Physics
Abstract

We have studied the angular fluctuations in the speed of light with respect to the apex of the dipole of Cosmic Microwave Background (CMB) radiation using the experimental data obtained with GRAAL facility, located at the European Synchrotron Radiation Facility (ESRF) in Grenoble. The measurements were based on the stability of the Compton edge of laser photons scattered on the 6 GeV monochromatic electron beam. The results enable to obtain a conservative constraint on the anisotropy in the light speed variations \Delta c(\theta)/c < 3 10^{-12}, i.e. with higher precision than from previous experiments., Comment: The published version: reported at the workshop "Testing the Equivalence Principle in Space and on Ground" (STEP), Pescara, Italy, September, 2004

Published
2004
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6. Eta photoproduction off the neutron at GRAAL: Evidence for a resonant structure at W=1.67 GeV

Author

Kuznetsov, V., Bartalini, O., Bellini, V., Castoldi, M., D'Angelo, A., Didelez, J. -P., Di Salvo, R., Fantini, A., Franco, D., Gervino, G., Ghio, F., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kunne, R., Lapik, A., Sandri, P. Levi, Moricciani, D., Nicoletti, L., Randalieri, C., Rudnev, N., Russo, G., Schaerf, C., Sperduto, M. -L., Sutera, M. -C., and Turinge, A.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

New (preliminary) data on eta photoproduction off the neutron are presented. These data reveal a resonant structure at W=1.67 GeV., Comment: 8 pages, 4 figures. Published in Proceedings of Workshop on the Physics of Excited Nucleons NSTAR2004, Grenoble, France, March 24 - 27, pg.197

Published
2004
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7. Generalized Parton Distributions and Nucleon Resonances

Author

Guidal, M., Bouchigny, S., Didelez, J. -P., Hadjidakis, C., Hourany, E., and Vanderhaeghen, M.

Subjects
High Energy Physics - Phenomenology
Abstract

We discuss the relations between Generalized Parton Distributions (GPDs) and nucleon resonances. We first briefly introduce the concept of "transition" GPDs. Then we discuss a straightforward application to the modelization of the N-$\Delta$ magnetic transition form factor. Finally, we discuss the experimental aspects of the subject and present first preliminary experimental investigations in this field., Comment: 6 pages, 4 figures, Nstar02 conference proceeding

Published
2003
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8. Precise Measurement of Sigma Beam Asymmetry for Positive Pion Photoproduction on the Proton from 800 to 1500 Mev

Author

Bartalini, O., Bellini, V., Bocquet, J. -P., Capogni, M., Castoldi, M., D'Angelo, A., Didelez, J. -P., Di Salvo, R., Fantini, A., Gervino, G., Ghio, F., Girolami, B., Guidal, M., Hourany, E., Kouznetsov, V., Kunne, R., Lapik, A., Sandri, P. Levi, Lleres, A., Moricciani, D., Nedorezov, V., Nicoletti, L., Rebreyend, D., Renard, F., Roudnev, N., Schaerf, C., Sperduto, M., Sutera, M., Turinge, A., Zucchiatti, A., Arndt, R., Briscoe, W., Strakovsky, I., and Workman, R.

Subjects
Nuclear Experiment
Abstract

The Sigma beam asymmetry for positive pion photoproduction on the proton has been measured over an angular range of 40-170 deg at photon energies from 0.8 to 1.5 GeV. The resulting data set includes 237 accurate points, 136 of these belonging to an almost unexplored domain above 1.05 GeV. Data of such high precision provide severe constraints for partial wave analyses. The influence of this experiment on the GW multipole analysis is demonstrated. Significant changes are found in multipoles connected to the S31(1620) and P13(1720) resonances. Comparisons using the MAID analysis are also presented., Comment: 11 pages, 4 eps figures. to be published in Physics Letters B

Published
2002
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9. Differential cross section measurement of eta photoproduction on the proton from threshold to 1100 MeV

Author

GRAAL collaboration, Renard, F., Anghinolfi, M., Bartalini, O., Bellini, V., Bocquet, J. -P., Capogni, M., Castoldi, M., Corvisiero, P., D'Angelo, A., Didelez, J. -P., Di Salvo, R., Gaulard, C., Gervino, G., Ghio, F., Girolami, B., Guidal, M., Hourany, E., Kouznetsov, V., Kunne, R., Lapik, A., Sandri, P. Levi, Lleres, A., Moricciani, D., Nedorezov, V., Nicoletti, L., Rebreyend, D., Rudnev, N., Sanzone, M., Schaerf, C., Sperduto, M. -L., Sutera, M. -C., Taiuti, M., Turinge, A., Zhao, Q., and Zucchiatti, A.

Subjects
High Energy Physics - Experiment
Abstract

The differential cross section for the reaction p(gamma, eta p) has been measured from threshold to 1100 MeV photon laboratory energy. For the first time, the region of the S11(1535) resonance is fully covered in a photoproduction experiment and allows a precise extraction of its parameters at the photon point. Above 1000 MeV, S-wave dominance vanishes while a P-wave contribution is observed whose nature will have to be clarified. These high precision data together with the already measured beam asymmetry data will provide stringent constraints on the extraction of new couplings of baryon resonances to the eta meson., Comment: 10 pages, 5 figures, submitted to Phys. Letters B. Typos corrected. Some more information on the S11(1535) parameters

Published
2000
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10. Beam Polarisation Asymmetries in Meson Photoproduction at Graal

Author

Ajaka, J., Bellini, V., Bocquet, J. P., Breuer, M., Capogni, M., Castoldi, M., Ciciani, L., D’Angelo, A., Didelez, J. P., Di Salvo, R., Duval, M. A., Gaulard, C., Ghio, F., Girolami, B., Guidal, M., Hourany, E., Lapik, A., Kilvington, I., Kouznetsov, V., Sandri, P. Levi, Lleres, A., Moricciani, D., Nedorezov, V., Nicoletti, L., Perrin, C., Rebreyend, D., Renard, F., Rudnev, N. V., Schaerf, C., Turinge, A., Zucchiatti, A., Plessas, W., editor, Simula, Silvano, editor, Saghai, Bijan, editor, Mukhopadhyay, Nimai C., editor, and Burkert, Volker D., editor

Published
1999
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11. Beam Asymmetry Σ in Meson Photoproduction at GRAAL

Author

Renard, F., Ajaka, J., Bellini, V., Bocquet, J. P., Breuer, M., Capogni, M., Castoldi, M., Ciciani, L., D’Angelo, A., Didelez, J.-P., Di Salvo, R., Duval, M. A., Gaulard, C., Ghio, F., Girolami, B., Guidai, M., Hourany, E., Kilvington, I., Kouznetsov, V., Lapik, A., Sandri, P. Levi, Lleres, A., Moricciani, D., Nedorezov, V., Nicoletti, L., Perrin, C., Rebreyend, D., Rudnev, N. V., Schaerf, C., Turinge, A., Zucchiatti, A., Plessas, W., editor, Desplanques, Bertrand, editor, Protasov, Konstantin, editor, Silvestre-Brac, Bernard, editor, and Carbonell, Jaume, editor

Published
1999
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12. Photoproduction of Eta Mesons on Deuterium from Threshold to 1.2 GeV

Author

Hoffmann-Rothe, P., Hourany, E., Breuer, M., Didelez, J.-P., Rigney, M., Ajaka, J., Anton, G., Arends, J., Berrier-Ronsin, G., Beulertz, W., Blanpied, G., Bock, A., v. Edel, G., Frascaria, R., Helbing, K., Hey, J., Krebeck, M., Maass, R., Nöldeke, G., Preedom, B., Ritchie, B., Rosier, L., Saghai, B., Schumacher, M., Smend, F., Whisnant, S., Zucht, B., Mitter, H., editor, Plessas, W., editor, Adam, J., editor, Dobeš, J., editor, Mach, R., editor, Sotona, M., editor, and Dolejší, J., editor

Published
1996
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13. Measurement of $ \pi^{0}_{}$ photoproduction off the neutron in the second and third resonances region⋆

Author

Di Salvo, R., Fantini, A., Mandaglio, G., Mammoliti, F., Bartalini, O., Bellini, V., Bocquet, J. P., Casano, L., D’angelo, A., Didelez, J. P., Franco, D., Gervino, G., Ghio, F., Giardina, G., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kunne, R., Lapik, A., Levi Sandri, P., Lleres, A., Manganaro, M., Moricciani, D., Mushkarenkov, A. N., Nedorezov, V., Randieri, C., Rebreyend, D., Rudnev, N., Russo, G., Schaerf, C., Sperduto, M. L., Sutera, M. C., Turinge, A., Vegna, V., Fix, A., Kamalov, S. S., and Tiator, L.

Published
2009
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14. Measurement of beam-recoil observables Ox , Oz and target asymmetry T for the reaction $ \Lambda$

Author

Lleres, A., Bartalini, O., Bellini, V., Bocquet, J. P., Calvat, P., Capogni, M., Casano, L., Castoldi, M., D’Angelo, A., Didelez, J. -P., Di Salvo, R., Fantini, A., Franco, D., Gaulard, C., Gervino, G., Ghio, F., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kunne, R., Kuznetsov, V., Lapik, A., Levi Sandri, P., Mammoliti, F., Mandaglio, G., Moricciani, D., Mushkarenkov, A. N., Nedorezov, V., Nicoletti, L., Perrin, C., Randieri, C., Rebreyend, D., Renard, F., Rudnev, N., Russew, T., Russo, G., Schaerf, C., Sperduto, M. -L., Sutera, M. -C., Turinge, A., Vegna, V., and The GRAAL Collaboration

Published
2009
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15. Exclusive ρ0 electroproduction on the proton at CLAS

Author

Morrow, S. A., Guidal, M., Garçon, M., Laget, J. M., Smith, E. S., Adams, G., Adhikari, K. P., Aghasyan, M., Amaryan, M. J., Anghinolfi, M., Asryan, G., Audit, G., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J. P., Baltzell, N. A., Barrow, S., Battaglieri, M., Bedlinskiy, I., Bektasoglu, M., Bellis, M., Benmouna, N., Berman, B. L., Biselli, A. S., Blaszczyk, L., Bonner, B. E., Bookwalter, C., Bouchigny, S., Boiarinov, S., Bradford, R., Branford, D., Briscoe, W. J., Brooks, W. K., Bültmann, S., Burkert, V. D., Butuceanu, C., Calarco, J. R., Careccia, S. L., Carman, D. S., Carnahan, B., Casey, L., Cazes, A., Chen, S., Cheng, L., Cole, P. L., Collins, P., Coltharp, P., Cords, D., Corvisiero, P., Crabb, D., Crannell, H., Crede, V., Cummings, J. P., Dale, D., Dashyan, N., De Masi, R., De Vita, R., De Sanctis, E., Degtyarenko, P. V., Denizli, H., Dennis, L., Deur, A., Dhamija, S., Dharmawardane, K. V., Dhuga, K. S., Dickson, R., Didelez, J. -P., Djalali, C., Dodge, G. E., Doughty, D., Dugger, M., Dytman, S., Dzyubak, O. P., Egiyan, H., Egiyan, K. S., El Fassi, L., Elouadrhiri, L., Eugenio, P., Fatemi, R., Fedotov, G., Fersch, R., Feuerbach, R. J., Forest, T. A., Fradi, A., Gavalian, G., Gevorgyan, N., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Gohn, W., Gordon, C. I. O., Gothe, R. W., Graham, L., Griffioen, K. A., Guillo, M., Guler, N., Guo, L., Gyurjyan, V., Hadjidakis, C., Hafidi, K., Hakobyan, H., Hanretty, C., Hardie, J., Hassall, N., Heddle, D., Hersman, F. W., Hicks, K., Hleiqawi, I., Holtrop, M., Hourany, E., Hyde-Wright, C. E., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Ito, M. M., Jenkins, D., Jo, H. S., Johnstone, J. R., Joo, K., Juengst, H. G., Kalantarians, N., Keller, D., Kellie, J. D., Khandaker, M., Khetarpal, P., Kim, W., Klein, A., Klein, F. J., Klimenko, A. V., Kossov, M., Kramer, L. H., Kubarovsky, V., Kuhn, J., Kuhn, S. E., Kuleshov, S. V., Kuznetsov, V., Lachniet, J., Langheinrich, J., Lawrence, D., Li, Ji, Livingston, K., Lu, H. Y., MacCormick, M., Marchand, C., Markov, N., Mattione, P., McAleer, S., McCracken, M., McKinnon, B., McNabb, J. W. C., Mecking, B. A., Mehrabyan, S., Melone, J. J., Mestayer, M. D., Meyer, C. A., Mibe, T., Mikhailov, K., Minehart, R., Mirazita, M., Miskimen, R., Mokeev, V., Morand, L., Moreno, B., Moriya, K., Moteabbed, M., Mueller, J., Munevar, E., Mutchler, G. S., Nadel-Turonski, P., Nasseripour, R., Niccolai, S., Niculescu, G., Niculescu, I., Niczyporuk, B. B., Niroula, M. R., Niyazov, R. A., Nozar, M., O’Rielly, G. V., Osipenko, M., Ostrovidov, A. I., Park, K., Park, S., Pasyuk, E., Paterson, C., Anefalos Pereira, S., Philips, S. A., Pierce, J., Pivnyuk, N., Pocanic, D., Pogorelko, O., Polli, E., Popa, I., Pozdniakov, S., Preedom, B. M., Price, J. W., Procureur, S., Prok, Y., Protopopescu, D., Qin, L. M., Raue, B. A., Riccardi, G., Ricco, G., Ripani, M., Ritchie, B. G., Rosner, G., Rossi, P., Rubin, P. D., Sabatié, F., Saini, M. S., Salamanca, J., Salgado, C., Santoro, J. P., Sapunenko, V., Schott, D., Schumacher, R. A., Serov, V. S., Sharabian, Y. G., Sharov, D., Shvedunov, N. V., Skabelin, A. V., Smith, L. C., Sober, D. I., Sokhan, D., Stavinsky, A., Stepanyan, S. S., Stepanyan, S., Stokes, B. E., Stoler, P., Strakovsky, I. I., Strauch, S., Taiuti, M., Tedeschi, D. J., Tkabladze, A., Tkachenko, S., Todor, L., Tur, C., Ungaro, M., Vineyard, M. F., Vlassov, A. V., Watts, D. P., Weinstein, L. B., Weygand, D. P., Williams, M., Wolin, E., Wood, M. H., Yegneswaran, A., Yurov, M., Zana, L., Zhang, J., Zhao, B., Zhao, Z. W., and The CLAS Collaboration

Published
2009
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16. Measurement of the total photoabsorption cross section on a proton in the energy range 600–1500 MeV at the GRAAL

Author

Bartalini, O., Bellini, V., Bocquet, J. P., Calvat, P., D’Angelo, A., Didelez, J. -P., Di Salvo, R., Fantini, A., Ghio, F., Girolami, B., Guidal, M., Giusa, A., Hourany, E., Ignatov, A. S., Kunne, R., Lapik, A. M., Sandri, P. Levi, Lleres, A., Moricciani, D., Mushkarenkov, A. N., Nedorezov, V. G., Perrin, C., Rebreyend, D., Renard, F., Rudnev, N. V., Russew, T., Russo, G., Schaerf, C., Sperduto, M. -L., Sutera, M. -C., and Turinge, A. A.

Published
2008
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17. Polarization observable measurements for γp → K+Λ and γp → K+Σfor energies up to 1.5 GeV

Author

Lleres, A., Bartalini, O., Bellini, V., Bocquet, J. P., Calvat, P., Capogni, M., Casano, L., Castoldi, M., D'Angelo, A., Didelez, J. -P., Di Salvo, R., Fantini, A., Gaulard, C., Gervino, G., Ghio, F., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kouznetsov, V., Kunne, R., Lapik, A., Levi Sandri, P., Moricciani, D., Mushkarenkov, A. N., Nedorezov, V., Nicoletti, L., Perrin, C., Randieri, C., Rebreyend, D., Renard, F., Rudnev, N., Russew, T., Russo, G., Schaerf, C., Sperduto, M. -L., Sutera, M. -C., and Turinge, A.

Published
2007
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18. Meson photoproduction at GRAAL: preliminary results

Author

Bartalini, O., Bellini, V., Bocquet, J. P., Capogni, M., Castoldi, M., D’angelo, A., d’Angelo, Annelisa, Didelez, J. P., Di Salvo, R., Fantini, A., Gervino, G., Ghio, F., Girolami, B., Guidal, M., Hourany, E., Kilvington, I., Kunne, R., Kuznetsov, V., Lapik, A., Levi Sandri, P., Lleres, A., Moricciani, D., Nedorezov, V., Nicoletti, L., Rebreyend, D., Renard, F., Rudnev, N. V., Schaerf, C., Sperduto, M. L., Sutera, M. C., Turinge, A., Zucchiatti, A., and Di Salvo, R.

Published
2002
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19. Neutron detection efficiency of BGO calorimeter at GRAAL

Author

Bartalini, O., Bellini, V., Bocquet, J.P., Capogni, M., Casano, M., Castoldi, M., Calvat, P., D’Angelo, A., Didelez, J.-P., Di Salvo, R., Fantini, A., Gervino, G., Ghio, F., Girolami, B., Guidal, M., Giusa, A., Hourany, E., Kunne, R., Kouznetsov, V., Lapik, A., Levi Sandri, P., Lleres, A., Moricciani, D., Mushkarenkov, A., Nedorezov, V., Nicoletti, L., Perrin, C., Rebreyend, D., Renard, F., Rudnev, N., Russew, T., Russo, G., Schaerf, C., Sperduto, M.-L., Sutera, M.-C., and Turinge, A.

Published
2006
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20. The graal experiment: Beam polarization asymmetries in pseudoscalar meson photoproduction

Author

Di Salvo, Rachele, Ajaka, J., Anghinolfi, M., Bartalini, O., Bellini, V., Berrier, G., Bocquet, J. P., Breuer, M., Calvat, P., Capogni, M., Casano, L., Castoldi, M., Ciciani, L., Corvisiero, P., D'Angelo, A., Didelez, J. P., Djalali, Ch., Duval, M. A., Frascaria, R., Gaulard, C., Gervino, G., Ghio, F., Girard, P., Girolami, B., Guidal, M., Guinault, E., Hourany, E., Kuznetsov, V., Lapik, A., Sandri, P. Levi, Lleres, A., Moricciani, D., Morlet, M., Nedorezov, V., Nicoletti, L., Perrin, C., Rebreyend, D., Renard, F., Ripani, M., Rosier, L., Rossi, P., Rudnev, N., Sanzone, M., Schaerf, C., Sperduto, M. L., Sudov, A., Taiuti, M., Turinge, A., Van de Wiele, J., and Zucchiatti, A.

Published
1999
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23. MESON PHOTOPRODUCTION AT GRAAL

Author

D'ANGELO, A., primary, DI SALVO, R., additional, MORICCIANI, D., additional, SCHAERF, C., additional, BARTALINI, O., additional, SANDRI, P. LEVI, additional, GHIO, F., additional, GIROLAMI, B., additional, CASTOLDI, M., additional, ZUCCHIATTI, A., additional, BELLINI, V., additional, SPERDUTO, M.L., additional, SUTERA, M.C., additional, GERVINO, G., additional, BOCQUET, J.P., additional, LLERES, A., additional, NICOLETTI, L., additional, REBREYEND, D., additional, RENARD, F., additional, DIDELEZ, J.-P., additional, GUIDAL, M., additional, HOURANY, E., additional, KUNNE, R., additional, KOUZNETSOV, V., additional, LAPIK, A., additional, NEDOREZOV, V., additional, RUDNEV, N., additional, and TURINGE, A., additional

Published
2001
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24. Static and dynamic polarization of HD

Author

Bassan, M., Bouchigny, S., Commeaux, C., Didelez, J.-P., Rouillé, G., Schaerf, C., Bellini, V., Bocquet, J.-P., Castoldi, M., D'Angelo, A., Di Salvo, R., Fantini, A., Ghio, F., Girolami, B., Guidal, M., Hourany, E., Kunne, R., Levi Sandri, P., Lleres, A., Moricciani, D., and Rebreyend, D.

Published
2004
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25. Beam Asymmetry Σ in Meson Photoproduction at GRAAL

Author

Renard, F., primary, Ajaka, J., additional, Bellini, V., additional, Bocquet, J. P., additional, Breuer, M., additional, Capogni, M., additional, Castoldi, M., additional, Ciciani, L., additional, D’Angelo, A., additional, Didelez, J.-P., additional, Di Salvo, R., additional, Duval, M. A., additional, Gaulard, C., additional, Ghio, F., additional, Girolami, B., additional, Guidai, M., additional, Hourany, E., additional, Kilvington, I., additional, Kouznetsov, V., additional, Lapik, A., additional, Sandri, P. Levi, additional, Lleres, A., additional, Moricciani, D., additional, Nedorezov, V., additional, Nicoletti, L., additional, Perrin, C., additional, Rebreyend, D., additional, Rudnev, N. V., additional, Schaerf, C., additional, Turinge, A., additional, and Zucchiatti, A., additional

Published
1999
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26. Beam Polarisation Asymmetries in Meson Photoproduction at Graal

Author

Ajaka, J., primary, Bellini, V., additional, Bocquet, J. P., additional, Breuer, M., additional, Capogni, M., additional, Castoldi, M., additional, Ciciani, L., additional, D’Angelo, A., additional, Didelez, J. P., additional, Di Salvo, R., additional, Duval, M. A., additional, Gaulard, C., additional, Ghio, F., additional, Girolami, B., additional, Guidal, M., additional, Hourany, E., additional, Lapik, A., additional, Kilvington, I., additional, Kouznetsov, V., additional, Sandri, P. Levi, additional, Lleres, A., additional, Moricciani, D., additional, Nedorezov, V., additional, Nicoletti, L., additional, Perrin, C., additional, Rebreyend, D., additional, Renard, F., additional, Rudnev, N. V., additional, Schaerf, C., additional, Turinge, A., additional, and Zucchiatti, A., additional

Published
1999
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27. Photoproduction of Eta Mesons on Deuterium from Threshold to 1.2 GeV

Author

Hoffmann-Rothe, P., primary, Hourany, E., additional, Breuer, M., additional, Didelez, J.-P., additional, Rigney, M., additional, Ajaka, J., additional, Anton, G., additional, Arends, J., additional, Berrier-Ronsin, G., additional, Beulertz, W., additional, Blanpied, G., additional, Bock, A., additional, v. Edel, G., additional, Frascaria, R., additional, Helbing, K., additional, Hey, J., additional, Krebeck, M., additional, Maass, R., additional, Nöldeke, G., additional, Preedom, B., additional, Ritchie, B., additional, Rosier, L., additional, Saghai, B., additional, Schumacher, M., additional, Smend, F., additional, Whisnant, S., additional, and Zucht, B., additional

Published
1995
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28. Meson photoproduction at GRAAL and baryon resonances

Author

Bartalini, O., Bellini, V., Bocquet, J.P., Capogni, M., Castoldi, M., D'Angelo, Annalisa, d'Angelo, Annelisa, Didelez, J.P., Di Salvo, R., Fantini, A., Gervino, G., Ghio, F., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kuznetsov, V., Lapik, A., Levi Sandri, P., Lleres, A., Moricciani, D., Nedorezov, V., Nicoletti, L., Randieri, C., Rebreyend, D., Renard, F., Rudnev, N.V., Schaerf, C., Sperduto, M.L., Sutera, C.M., Turinge, A., Zabrodin, A., and Zucchiatti, A.

Published
2002
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30. Strangeness photoproduction at GRAAL

Author

Bocquet, J.P., Anghinolfi, M., Bartalini, O., Bellini, V., Castoldi, M., Corvisiero, P., D'Angelo, A., Didelez, J.-P., Di Salvo, R., Gervino, G., Ghio, F., Girolami, B., Guidal, M., Hourany, E., Kouznetsov, V., Kunne, R., Lapik, A., Levi Sandri, P., Lleres, A., Moricciani, D., Nedorezov, V., Nicoletti, L., Rebreyend, D., Renard, F., Rudnev, N., Sanzone, M., Schaerf, C., Sperduto, M.L., Sutera, M.C., Taiuti, M., Turinge, A., and Zucchiatti, A.

Published
2001
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31. Precise measurement of Σ beam asymmetry for positive pion photoproduction on the proton from 550 to 1100 MeV

Author

Ajaka, J, Bartalini, O, Battaglieri, M, Bellini, V, Bocquet, J.P, Calvat, P.M, Capogni, M, Castoldi, M, Ciciani, L, D'Angelo, A, Didelez, J.-P, Di Salvo, R, Duval, M.-A, Gaulard, C, Gervino, G, Ghio, F, Girolami, B, Guidal, M, Guinault, E, Hourany, E, Jejcic, A, Kilvington, I, Kouznetsov, V, Lapik, A, Levi Sandri, P, Lleres, A, Morriciani, D, Nedorezov, V, Nicoletti, L, Rebreyend, D, Renard, F, Ripani, M, Rudnev, N, Schaerf, C, Turinge, A, and Zucchiatti, A

Published
2000
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32. Beam asymmetry Σ in meson photo-production at GRAAL

Author

Ajaka, J., Bellini, V., Bocquet, J.P., Capogni, M., Castoldi, M., D'Angelo, A., Didelez, J.P., Di Salvo, R., Duval, M.A., Gaulard, C., Ghio, F., Girolami, B., Guidal, M., Hourany, E., Lapik, A., Kilvington, I., Kouznetsov, V., Sandri, P. Levi, Lleres, A., Moricciani, D., Nedorezov, V., Nicoletti, L., Perrin, C., Rebreyend, D., Renard, F., Schaerf, C., Turinge, A., and Zucchiatti, A.

Published
1999
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33. BEAM ASYMMETRY IN MESON PHOTOPRODUCTION ON DEUTERON TARGETS AT GRAAL

Author

DI SALVO, R., Bartalini, O., Bellini, Vincenzo, Bocquet, J. P., Castoldi, M., D'Angelo, A., Didelez, J. P., Fantini, A., Gervino, G., Ghio, F., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kunne, R., Kuznetsov, V., Lapik, A., LEVI SANDRI, P., Lleres, A., Moricciani, D., Moushkarenko, A., Nedorezov, D. V., Rebreyend, D., Rudnev, N. V., Russo, Giuseppe, Schaerf, C., Sperduto, M. L., Sutera, CONCETTA MARIA, Turinge, A., and Zabrodin, A.

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Proton, Meson, media_common.quotation_subject, Astronomy and Astrophysics, Asymmetry, Atomic and Molecular Physics, and Optics, Nuclear physics, Deuterium, Neutron, Beam (structure), media_common
Abstract

Preliminary results on the beam asymmetry Σ for η and π0 photoproduction on the proton and the neutron in the deuteron in a quasi free kinematics regime have been obtained. Very preliminary results will be presented on the status of art of the GRAAL search for the two members of the exotic penta-quarks anti-decuplet, the P11 and the Θ+.

Published
2005
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34. MEASUREMENTS OF BEAM-RECOIL OBSERVABLES Ox, Oz AND TARGET ASYMMETRY FOR THE REACTION γp -> K+lambda

Author

Lleres, A., Bartalini, O., Bellini, Vincenzo, Bocquet, J. P., Calvat, P., Capogni, M., Casano, L., Castoldi, M., D'Angelo, A., Didelez, J. P., DI SALVO, R., Fantini, A., Gaulard, C., Gervino, G., Ghio, F., Girolami, B., Giusa, A, Guidal, M., Hourany, E., Kuznetsov, V., Kunne, R., Lapik, A., LEVI SANDRI, P., Moricciani, D., Mushkarenkov, A. N., Nedorezov, V., Nicoletti, L., Perrin, C., Randieri, C., Rebreyend, D., Renard, F., Rudnev, N., Russew, T., Russo, Giuseppe, Schaerf, C., Sperduto, M. L., Sutera, M. C., and Turinge, A.

Published
2009

35. Measurement of beam-recoil observables Ox , Oz target asymmetry for the reaction p -> K+

Author

Lleres, A., Bartalini, O., Bellini, V., Bocquet, J. P., Calvat, P., Capogni, M., Casano, L., Castoldi, M., D’Angelo, A., Didelez, J. P., Di Salvo, R., Fantini, A., Gaulard, C., Gervino, Gianpiero, Ghio, F., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kouznetsov, V., Kunne, R., Lapik, A., Levi Sandri, P., Moricciani, D., Mushkarenkov, A. N., Nedorezov, V., Nicoletti, L., Perrin, C., Randieri, C., Rebreyend, D., Renard, F., Rudnev, N., Russew, T., Russo, G., Schaerf, C., Sperduto, M. L., Sutera, M. C., and Turinge, A.

Subjects
FOTOREAZIONI NUCLEARI, KAONI, QUARKS, PARTICELLE STRANE
Published
2009

36. Latest results from GRAAL collaboration

Author

Vegna, V, Bellini, V, Bouquet, J, Lapik, A, Casano, L, D'Angelo, A, Schaerf, C, Didelez, J, Di Salvo, R, Fantini, A, Franco, D, Gervino, G, Ghio, F, Giardina, G, Girolami, B, Giusa, A, Guidal, M, Hourany, E, Ignatov, A, Kunnel, R, Lleres, A, Sandri, P, Mammoliti, F, Mandaglio, G, Manganaro, M, Moricciani, M, Mushkarenkov, A, Nedorezov, V, Randieri, C, Rebreyend, D, Rudnev, N, Russo, G, Sperduto, M, Sutera, M, and Turinge, A

Subjects
polarized photon, meson photoproduction, polarization observables, Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2009

37. Eta photoproduction in Hydrogen and Deuterium

Author

Bellini, Vincenzo, Giusa, A., Mammoliti, F., Randieri, C., Russo, Giuseppe, Sperduto, M. L., Sutera, M. C., Giardina, G., Mandaglio, G., Manganaro, M., Bartalini, O., D'Angelo, A., Fantini, A., Nicoletti, L., Schaerf, C., Casano, L., DI SALVO, R., Moricciani, D., Capogni, M, LEVI SANDRI, P., Gaulard, C., Girolami, B., Ghio, F., Bocquet, J. P., Calvat, P., Lleres, A., Rebreyend, D., Renard, F., Russew, T., Didelez, J. P., Guidal, M., Hourany, E., Kunne, R., Lapik, A., Mushkarenkov, A. N., Nedorezov, V., Rudnev, N., Turinge, A., Castoldi, M., and Kuznetsov, G. GERVINO AND V.

Published
2008

38. Simultaneous Photoproduction of eta and pi0 Mesons on the Proton

Author

Ajaka, J., Assafiri, Y., Bartalini, O., Bellini, Vincenzo, Bouchigny, S., Castoldi, M., D'Angelo, A., Didelez, J. P., DI SALVO, R., Doring, M., Fantini, A., Fichen, L., Gervino, G., Ghio, F., Girolami, B., Giusa, A, Guidal, M., Hourany, E., Kunne, R., Lapik, A., LEVI SANDRI, P., Moricciani, D., Mushkarenkov, A., Nedorezov, V., Oset, E., Randieri, C., Rudnev, N., Russo, Giuseppe, Schaerf, C., Sperduto, M., Sutera, CONCETTA MARIA, and Turinge, A.

Subjects
interaction [photon p], Beam energy, Resonance, (1)) [< 1.5 GeV], Settore FIS/04 - Fisica Nucleare e Subnucleare, energy dependence, Grenoble ESRF [interpretation of experiments], Photochemical reactions, ddc:550, Chirality, Protons, Beam asymmetry, Mesons, Photoproduction, Bosons, Nuclear Experiment, numerical calculations, associated production [pi0], photoproduction [eta], cross section, N(1535), polarized beam [photon], +p+eta+pi0%22">photon p --> p eta pi0, intermediate boson [nucleon resonance], Delta(1700), asymmetry [polarization], High Energy Physics::Experiment, chiral [effective Lagrangian]
Abstract

The analysis of the gamma p ->eta pi(0)p reaction has been performed using data from the GRAAL experiment. The total and differential cross sections and the beam asymmetry have been obtained from threshold up to 1.5 GeV of beam energy. The two resonances S-11(1535) and Delta(1700) are expected to be excited in the intermediate states of this reaction. The results are used to test predictions based on the assumption that both resonances are dynamically generated from the meson-baryon interaction provided by chiral Lagrangians. The term involving the Delta(1700) excitation, followed by the decay into eta Delta(1232), is found to be dominant.

Published
2008
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39. Recent Results from the Graal and LEGS Beams

Author

Bellini, V, Bocquet, J, Casano, L, Castoldi, M, D'Angelo, A, Didelez, J, Di Salvo, R, Fantini, A, Franco, D, Gervino, G, Ghio, F, Giardina, G, Girolami, B, Giusa, A, Guidal, M, Hourany, E, Kunne, R, Lapik, A, Levi Sandri, P, Lleres, A, Mammoliti, F, Mandaglio, G, Manganaro, M, Moricciani, D, Mushkarenkov, A, Nedorezov, V, Nicoletti, L, Randieri, C, Rebreyend, D, Rudnev, N, Russo, G, Schaerf, C, Sperduto, M, Sutera, M, Turinge, A, Vegna, V, Ardashev, K, Bade, C, Blecher, M, Caracappa, A, Gibson, C, Gluckler, H, Hicks, K, Hoblit, S, Kageya, T, Khandaker, M, Kistner, O, Kizigul, S, Kucuker, S, Lehmann, A, Lincoln, F, Lindgren, R, Lowry, M, Lucas, M, Mahon, J, Miceli, L, Pap, M, Preedom, B, Sandorfi, A, Seyfarth, H, Stroher, H, Thornl, C, Whisnant, C, Wang, K, and Wei, X

Subjects
Polarized photons, meson photoproduction, polarization observables, PHOTOPRODUCTION, ETA, Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2008

40. Meson Photoproduction in Hydrogen and Deuterium

Author

Bellini, Vincenzo, Bartalini, O., Bocquet, J. P., Calvat, P., Capogni, M., Casano, L., Castoldi, M., D'Angelo, A., Didelez, J. P., Disalvo, R., Fantini, A., Gaulard, C., Gervino, G., Ghio, F., Giardina, G., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kouznetsov, V., Kunne, R., Lapik, A., Levisandri, P., Lleres, A., Mammoliti, F., Mandaglio, G., Moricciani, D., Mushkarenko, A. N., Nedorezov, V., Nicoletti, L., Perrin, C., Randieri, C., Rebreyend, D., Renard, F., Rudnev, N., Russew, T., Russo, Giuseppe, Schaerf, C., Sperduto, M. L., Sutera, CONCETTA MARIA, and Turinge, A.

Published
2008

41. Simultaneous photoproduction of η and ϖ0 mesons on proton

Author

Ajaka, J., Assifiri, Y., Bartalini, O., Bellini, V., Bouchigny, S., Castoldi, M., Dangelo, A., Didelez, J. P., DI SALVO, R., Doring, M., Fantini, A., Fichen, L., Gervino, Gianpiero, Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kunne, R., Lapik, A., LEVI SANDRI, P., Moricciani, D., Mushkarenkov, A. N., Nedorezov, V., Oset, E., Randieri, C., Rudnev, N., Russo, G., Schaerf, C., Sperduto, M. L., and M. C. SUTERA, A. TURINGE

Published
2008

42. RECENT RESULTS FROM THE GRAAL AND LEGS BEAMS

Author

Bellini, V., Bocquet, J. P., Casano, L., Castoldi, M., D'Angelo, A., Didelez, J. P., Di Salvo, R., Fantini, A., Franco, D., Gervino, Gianpiero, Ghio, F., Giardina, G., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kunne, R., Lapik, A., Levi Sandri, P., Lleres, A., Mammoliti, F., Mandaglio, G., Manganaro, M., Moricciani, D., Mushkarenkov, A., Nedorezov, V., Nicoletti, L., Randieri, C., Rebreyend, D., Rudnev, N., Russo, G., Schaerf, C., Sperduto, M. L., Sutera, M. C., Turinge, A., Ardashev, V. V. e. g. n. a. K., Bade, C., Blecher, M., Caracappa, A., Gibson, C., Glückler, H., Hicks, K., Hoblit, S., Kageya, T., Khandakar, M., Kistner, O. C., Kizigul, S., Kistner, O., Kucuker, S., Lehmann, A., Lincoln, F., Lindgren, R., Lowry, M., Lucas, M., Mahon, J., Miceli, L., Pap, M., Preedom, B., Sandorfi, A. M., Seyfarth, H., Ströher, H., Thorn, C. E., Wang, K., Wei, X., Whisnant, C. S., and X. W. e. i.

Published
2008

43. On the Light Speed Anisotropy vs Cosmic Microwave Background Dipole: European Synchrotron Radiation Facility Measurements

Author

Gurzadyan, V. G., Bocquet, J. P., Kashin, A., Margarian, A., Bartalini, O., Bellini, V., Castoldi, M., D’Angelo, A., Didelez, J. P., Di Salvo, R., Fantini, A., Gervino, Gianpiero, Ghio, F., Girolami, B., Giusa, A., Giudal, M., Hourany, E., Knyazyan, S., Kouznetsov, V., Kunne, R., Lapik, A., Levi Sandri, P., Lleres, A., Morriciani, D., Nedorezov, V., Perrin, C., Rebreyend, D., Russo, G., Rudnev, N., Schaerf, C., Sperduto, M. L., Sutera, M. C., and Turinge, A.

Published
2008

44. η Photoproduction in Hydrogen and Deuterium

Author

Bellini, Vincenzo, Giusa, A, Mammoliti, Francesco, Randieri, C, Russo, Giuseppe, Sperduto, M. L., Sutera, M. C., Giardina, G, Mandaglio, G, Manganaro, M, Bartalino, O, D'Angelo, A, Fantini, A, Nicoletti, L, Schaerf, C, Casano, L, Di Salvo, R., Moricciani, D, Capogni, M, Levi Sandri, P., Gaulard, C, Girolami, B, Ghio, F., Bocquet, J. P., Calvat, P, Lleres, A, Rebreyend, D, Renard, F, Russew, T, Didelez, J. P., Guidal, M, Hourany, E, Kunne, R, Lapik, A, Mushkarenkov, A. N., Nedorezov, V, Rudnev, N, Turinge, A, Castoldi, M, Gervino, G, and Kuznetsov, V.

Published
2008

45. On the light speed anisotropy vs cosmic microwave background dipole: European Synchrotron Radiation Facility Measurements

Author

Gurzadyan, V. G., Bocquet, J. P., Kashin, A., Margarian, A., Bartalini, O., Bellini, Vincenzo, Castoldi, M., D'Angelo, A., Didelez, J. P., DI SALVO, R., Fantini, A., Gervino, G., Ghio, F., Girolami, B., Giusa, A, Guidal, M., Hourany, E., Knyazyan, S., Kouznetsov, V., Kunne, R., Lapik, A., LEVI SANDRI, P., Lleres, A., Mehrabyan, S., Moricciani, D., Nedorezov, V., Perrin, C., Rebreyend, D., Russo, Giuseppe, Rudnev, N., Schaerf, C., Sperduto, M. L., Sutera, M. C., and Turinge, A.

Published
2007

46. Polarization observable measurements for gamma p -> K+ Lambda and gamma p -> K+ Sigma(0) for energies up to 1.5 GeV

Author

Lleres, A., Bartalini, O., Bellini, V., Bocquet, J. P., Calvat, P., Capogni, M., Casano, L., Castoldi, M., D'Angelo, A., Didelez, J. P., DI SALVO, R., Fantini, A., Gaulard, C., Gervino, Gianpiero, Ghio, F., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kouznetsov, V., Kunne, R., Lapik, A., LEVI SANDRI, P., Moricciani, D., Mushkarenkov, A. N., Nedorezov, V., Nicoletti, L., Perrin, C., Randieri, C., Rebreyend, D., Renard, F., Rudnev, N., Russew, T., Russo, G., Schaerf, C., Sperduto, M. L., and Turinge, M. C. SUTERA AND A.

Published
2007

47. Polarization observable measurements for gamma p -> K+ Lambda and gamma p -> K+ Sigma(0) for energies up to 1.5 GeV

Author

Lleres, A, Bartalini, O, Bellini, V, Bocquet, J, Calvat, P, Capogni, M, Casano, L, Castoldi, M, D'Angelo, A, Didelez, J, Di Salvo, R, Fantini, A, Gaulard, C, Gervino, G, Ghio, F, Girolami, B, Giusa, A, Guidal, M, Hourany, E, Kouznetsov, V, Kunne, R, Lapik, A, Sandri, P, Moricciani, D, Mushkarenkov, A, Nedorezov, V, Nicoletti, L, Perrin, C, Randieri, C, Rebreyend, D, Renard, F, Rudnev, N, Russew, T, Russo, G, Schaerf, C, Sperduto, M, Sutera, M, and Turinge, A

Subjects
MONITORING-SYSTEM, GRAAL, PHOTON ENERGIES, BGO CALORIMETER, PHOTOPRODUCTION, HYPERON, BEAM, PROTON, ETA, RESONANCES, Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2007

48. Polarization observable measurements for $\gamma p \to K^{+}\Lambda$ and $\gamma p \to K^{+}\Sigma^{0}$ for energies up to 1.5 GeV

Author

Lleres, A., Bartalini, O., Bellini, V., Bocquet, J.P., Calvat, P., Capogni, M., Casano, L., Castoldi, M., D'Angelo, A., Didelez, J.-P., Di Salvo, R., Fantini, A., Gaulard, C., Gervino, G., Ghio, F., Girolami, B., Giusa, A., Guidal, M., Hourany, E., Kouznetsov, V., Kunne, R., Lapik, A., Levi Sandri, P., Moricciani, D., Mushkarenkov, A.N., Nedorezov, V., Nicoletti, L., Perrin, C., Randieri, C., Rebreyend, D., Renard, F., Rudnev, N., Russew, T., Russo, G., Schaerf, C., Sperduto, M.-L., Sutera, M.-C., Turinge, A., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), and GRAAL

Subjects
scattering, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics::Accelerator Physics, Meson production, photoproduction reactions, 13.60.Le,13.88.+e,25.20.Lj, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

16 figures; 4 tables; Beam asymmetries and hyperon recoil polarizations for the reactions $\gamma p \to K^{+}\Lambda$ and $\gamma p \to K^{+}\Sigma^{0}$ have been measured from the threshold production to 1500 MeV with the GRAAL facility located at the ESRF in Grenoble. These results complement the database for the beam asymmetry, covering for the first time the production threshold region. Recent theoretical analyses are presented for which the beam asymmetry data bring interesting new information and allow to better determine some resonance parameters. Most importantly, these results strengthen the need of a new D$_{13}$ state around 1900 MeV.

Published
2007
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49. POLARIZATION OBSERVABLE MEASUREMENTS FOR γp -> K+lambda and γp -> K+Sigma0 FOR ENERGIES UP TO 1.5 GeV

Author

Lleres, A., Bartalini, O., Bellini, Vincenzo, Bocquet, J. P., Calvat, P., Capogni, M., Casano, L., Castoldi, M., D'Angelo, A., Didelez, J. P., DI SALVO, R., Fantini, A., Gaulard, C., Gervino, G., Ghio, F., Girolami, B., Giusa, A, Guidal, M., Hourany, E., Kuznetsov, V., Kunne, R., Lapik, A., LEVI SANDRI, P., Moricciani, D., Mushkarenkov, A. N., Nedorezov, V., Nicoletti, L., Perrin, C., Randieri, C., Rebreyend, D., Renard, F., Rudnev, N., Russew, T., Russo, Giuseppe, Schaerf, C., Sperduto, M. L., Sutera, M., and Turinge, A.

Published
2007

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