Data analysis techniques, differential cross sections, and spin density matrix elements for the reaction γp→φp

B. Dey, C. A. Meyer, M. Bellis, M. Williams, K. P. Adhikari, D. Adikaram, M. Aghasyan, M. J. Amaryan, M. D. Anderson, S. Anefalos Pereira, J. Ball, N. A. Baltzell, M. Battaglieri, I. Bedlinskiy, A. S. Biselli, J. Bono, S. Boiarinov, W. J. Briscoe, W. K. Brooks, V. D. Burkert & 129 others D. S. Carman, A. Celentano, S. Chandavar, L. Colaneri, P. L. Cole, M. Contalbrigo, O. Cortes, V. Crede, A. D'Angelo, N. Dashyan, R. De Vita, E. De Sanctis, A. Deur, C. Djalali, D. Doughty, Michael Dugger, R. Dupre, A. El Alaoui, L. El Fassi, L. Elouadrhiri, G. Fedotov, S. Fegan, J. A. Fleming, M. Garçon, N. Gevorgyan, Y. Ghandilyan, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, D. I. Glazier, J. T. Goetz, R. W. Gothe, K. A. Griffioen, M. Guidal, K. Hafidi, C. Hanretty, N. Harrison, M. Hattawy, K. Hicks, D. Ho, M. Holtrop, C. E. Hyde, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, D. Jenkins, H. S. Jo, K. Joo, D. Keller, M. Khandaker, A. Kim, W. Kim, A. Klein, F. J. Klein, S. Koirala, V. Kubarovsky, S. E. Kuhn, S. V. Kuleshov, P. Lenisa, K. Livingston, H. Lu, I. J D Macgregor, N. Markov, M. Mayer, M. E. McCracken, B. McKinnon, T. Mineeva, M. Mirazita, V. Mokeev, R. A. Montgomery, K. Moriya, H. Moutarde, E. Munevar, C. Munoz Camacho, P. Nadel-Turonski, S. Niccolai, G. Niculescu, I. Niculescu, M. Osipenko, L. L. Pappalardo, R. Paremuzyan, K. Park, E. Pasyuk, P. Peng, J. J. Phillips, S. Pisano, O. Pogorelko, S. Pozdniakov, J. W. Price, S. Procureur, D. Protopopescu, A. J R Puckett, D. Rimal, M. Ripani, Barry Ritchie, A. Rizzo, P. Rossi, P. Roy, F. Sabatié, M. S. Saini, D. Schott, R. A. Schumacher, E. Seder, I. Senderovich, Y. G. Sharabian, A. Simonyan, E. S. Smith, D. I. Sober, D. Sokhan, S. S. Stepanyan, P. Stoler, I. I. Strakovsky, S. Strauch, V. Sytnik, M. Taiuti, W. Tang, S. Tkachenko, M. Ungaro, B. Vernarsky, A. V. Vlassov, H. Voskanyan, E. Voutier, N. K. Walford, D. P. Watts, N. Zachariou, L. Zana, J. Zhang, Z. W. Zhao, I. Zonta

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

High-statistics measurements of differential cross sections and spin density matrix elements for the reaction γp→φp have been made using the CLAS detector at Jefferson Lab. We cover center-of-mass energies (s) from 1.97 to 2.84 GeV, with an extensive coverage in the φ production angle. The high statistics of the data sample made it necessary to carefully account for the interplay between the φ natural lineshape and effects of the detector resolution, that are found to be comparable in magnitude. We study both the charged- (φ→K+K-) and neutral- (φ→KS0KL0) KK̄ decay modes of the φ. Further, for the charged mode, we differentiate between the cases where the final K- track is directly detected or its momentum reconstructed as the total missing momentum in the event. The two charged-mode topologies and the neutral-mode have different resolutions and are calibrated against each other. Extensive usage is made of kinematic fitting to improve the reconstructed φ mass resolution. Our final results are reported in 10- and mostly 30-MeV-wide s bins for the charged- and the neutral-modes, respectively. Possible effects from K+Λ* channels with pKK̄ final states are discussed. These present results constitute the most precise and extensive φ photoproduction measurements to date and in conjunction with the ω photoproduction results recently published by CLAS, will greatly improve our understanding of low energy vector meson photoproduction.

Original languageEnglish (US)
Article number055208
JournalPhysical Review C - Nuclear Physics
Volume89
Issue number5
DOIs
StatePublished - May 27 2014

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photoproduction
cross sections
statistics
momentum
detectors
vector mesons
center of mass
kinematics
topology
energy
decay

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Data analysis techniques, differential cross sections, and spin density matrix elements for the reaction γp→φp. / Dey, B.; Meyer, C. A.; Bellis, M.; Williams, M.; Adhikari, K. P.; Adikaram, D.; Aghasyan, M.; Amaryan, M. J.; Anderson, M. D.; Anefalos Pereira, S.; Ball, J.; Baltzell, N. A.; Battaglieri, M.; Bedlinskiy, I.; Biselli, A. S.; Bono, J.; Boiarinov, S.; Briscoe, W. J.; Brooks, W. K.; Burkert, V. D.; Carman, D. S.; Celentano, A.; Chandavar, S.; Colaneri, L.; Cole, P. L.; Contalbrigo, M.; Cortes, O.; Crede, V.; D'Angelo, A.; Dashyan, N.; De Vita, R.; De Sanctis, E.; Deur, A.; Djalali, C.; Doughty, D.; Dugger, Michael; Dupre, R.; El Alaoui, A.; El Fassi, L.; Elouadrhiri, L.; Fedotov, G.; Fegan, S.; Fleming, J. A.; Garçon, M.; Gevorgyan, N.; Ghandilyan, Y.; Gilfoyle, G. P.; Giovanetti, K. L.; Girod, F. X.; Glazier, D. I.; Goetz, J. T.; Gothe, R. W.; Griffioen, K. A.; Guidal, M.; Hafidi, K.; Hanretty, C.; Harrison, N.; Hattawy, M.; Hicks, K.; Ho, D.; Holtrop, M.; Hyde, C. E.; Ilieva, Y.; Ireland, D. G.; Ishkhanov, B. S.; Jenkins, D.; Jo, H. S.; Joo, K.; Keller, D.; Khandaker, M.; Kim, A.; Kim, W.; Klein, A.; Klein, F. J.; Koirala, S.; Kubarovsky, V.; Kuhn, S. E.; Kuleshov, S. V.; Lenisa, P.; Livingston, K.; Lu, H.; Macgregor, I. J D; Markov, N.; Mayer, M.; McCracken, M. E.; McKinnon, B.; Mineeva, T.; Mirazita, M.; Mokeev, V.; Montgomery, R. A.; Moriya, K.; Moutarde, H.; Munevar, E.; Munoz Camacho, C.; Nadel-Turonski, P.; Niccolai, S.; Niculescu, G.; Niculescu, I.; Osipenko, M.; Pappalardo, L. L.; Paremuzyan, R.; Park, K.; Pasyuk, E.; Peng, P.; Phillips, J. J.; Pisano, S.; Pogorelko, O.; Pozdniakov, S.; Price, J. W.; Procureur, S.; Protopopescu, D.; Puckett, A. J R; Rimal, D.; Ripani, M.; Ritchie, Barry; Rizzo, A.; Rossi, P.; Roy, P.; Sabatié, F.; Saini, M. S.; Schott, D.; Schumacher, R. A.; Seder, E.; Senderovich, I.; Sharabian, Y. G.; Simonyan, A.; Smith, E. S.; Sober, D. I.; Sokhan, D.; Stepanyan, S. S.; Stoler, P.; Strakovsky, I. I.; Strauch, S.; Sytnik, V.; Taiuti, M.; Tang, W.; Tkachenko, S.; Ungaro, M.; Vernarsky, B.; Vlassov, A. V.; Voskanyan, H.; Voutier, E.; Walford, N. K.; Watts, D. P.; Zachariou, N.; Zana, L.; Zhang, J.; Zhao, Z. W.; Zonta, I.

In: Physical Review C - Nuclear Physics, Vol. 89, No. 5, 055208, 27.05.2014.

Research output: Contribution to journalArticle

Dey, B, Meyer, CA, Bellis, M, Williams, M, Adhikari, KP, Adikaram, D, Aghasyan, M, Amaryan, MJ, Anderson, MD, Anefalos Pereira, S, Ball, J, Baltzell, NA, Battaglieri, M, Bedlinskiy, I, Biselli, AS, Bono, J, Boiarinov, S, Briscoe, WJ, Brooks, WK, Burkert, VD, Carman, DS, Celentano, A, Chandavar, S, Colaneri, L, Cole, PL, Contalbrigo, M, Cortes, O, Crede, V, D'Angelo, A, Dashyan, N, De Vita, R, De Sanctis, E, Deur, A, Djalali, C, Doughty, D, Dugger, M, Dupre, R, El Alaoui, A, El Fassi, L, Elouadrhiri, L, Fedotov, G, Fegan, S, Fleming, JA, Garçon, M, Gevorgyan, N, Ghandilyan, Y, Gilfoyle, GP, Giovanetti, KL, Girod, FX, Glazier, DI, Goetz, JT, Gothe, RW, Griffioen, KA, Guidal, M, Hafidi, K, Hanretty, C, Harrison, N, Hattawy, M, Hicks, K, Ho, D, Holtrop, M, Hyde, CE, Ilieva, Y, Ireland, DG, Ishkhanov, BS, Jenkins, D, Jo, HS, Joo, K, Keller, D, Khandaker, M, Kim, A, Kim, W, Klein, A, Klein, FJ, Koirala, S, Kubarovsky, V, Kuhn, SE, Kuleshov, SV, Lenisa, P, Livingston, K, Lu, H, Macgregor, IJD, Markov, N, Mayer, M, McCracken, ME, McKinnon, B, Mineeva, T, Mirazita, M, Mokeev, V, Montgomery, RA, Moriya, K, Moutarde, H, Munevar, E, Munoz Camacho, C, Nadel-Turonski, P, Niccolai, S, Niculescu, G, Niculescu, I, Osipenko, M, Pappalardo, LL, Paremuzyan, R, Park, K, Pasyuk, E, Peng, P, Phillips, JJ, Pisano, S, Pogorelko, O, Pozdniakov, S, Price, JW, Procureur, S, Protopopescu, D, Puckett, AJR, Rimal, D, Ripani, M, Ritchie, B, Rizzo, A, Rossi, P, Roy, P, Sabatié, F, Saini, MS, Schott, D, Schumacher, RA, Seder, E, Senderovich, I, Sharabian, YG, Simonyan, A, Smith, ES, Sober, DI, Sokhan, D, Stepanyan, SS, Stoler, P, Strakovsky, II, Strauch, S, Sytnik, V, Taiuti, M, Tang, W, Tkachenko, S, Ungaro, M, Vernarsky, B, Vlassov, AV, Voskanyan, H, Voutier, E, Walford, NK, Watts, DP, Zachariou, N, Zana, L, Zhang, J, Zhao, ZW & Zonta, I 2014, 'Data analysis techniques, differential cross sections, and spin density matrix elements for the reaction γp→φp', Physical Review C - Nuclear Physics, vol. 89, no. 5, 055208. https://doi.org/10.1103/PhysRevC.89.055208
Dey, B. ; Meyer, C. A. ; Bellis, M. ; Williams, M. ; Adhikari, K. P. ; Adikaram, D. ; Aghasyan, M. ; Amaryan, M. J. ; Anderson, M. D. ; Anefalos Pereira, S. ; Ball, J. ; Baltzell, N. A. ; Battaglieri, M. ; Bedlinskiy, I. ; Biselli, A. S. ; Bono, J. ; Boiarinov, S. ; Briscoe, W. J. ; Brooks, W. K. ; Burkert, V. D. ; Carman, D. S. ; Celentano, A. ; Chandavar, S. ; Colaneri, L. ; Cole, P. L. ; Contalbrigo, M. ; Cortes, O. ; Crede, V. ; D'Angelo, A. ; Dashyan, N. ; De Vita, R. ; De Sanctis, E. ; Deur, A. ; Djalali, C. ; Doughty, D. ; Dugger, Michael ; Dupre, R. ; El Alaoui, A. ; El Fassi, L. ; Elouadrhiri, L. ; Fedotov, G. ; Fegan, S. ; Fleming, J. A. ; Garçon, M. ; Gevorgyan, N. ; Ghandilyan, Y. ; Gilfoyle, G. P. ; Giovanetti, K. L. ; Girod, F. X. ; Glazier, D. I. ; Goetz, J. T. ; Gothe, R. W. ; Griffioen, K. A. ; Guidal, M. ; Hafidi, K. ; Hanretty, C. ; Harrison, N. ; Hattawy, M. ; Hicks, K. ; Ho, D. ; Holtrop, M. ; Hyde, C. E. ; Ilieva, Y. ; Ireland, D. G. ; Ishkhanov, B. S. ; Jenkins, D. ; Jo, H. S. ; Joo, K. ; Keller, D. ; Khandaker, M. ; Kim, A. ; Kim, W. ; Klein, A. ; Klein, F. J. ; Koirala, S. ; Kubarovsky, V. ; Kuhn, S. E. ; Kuleshov, S. V. ; Lenisa, P. ; Livingston, K. ; Lu, H. ; Macgregor, I. J D ; Markov, N. ; Mayer, M. ; McCracken, M. E. ; McKinnon, B. ; Mineeva, T. ; Mirazita, M. ; Mokeev, V. ; Montgomery, R. A. ; Moriya, K. ; Moutarde, H. ; Munevar, E. ; Munoz Camacho, C. ; Nadel-Turonski, P. ; Niccolai, S. ; Niculescu, G. ; Niculescu, I. ; Osipenko, M. ; Pappalardo, L. L. ; Paremuzyan, R. ; Park, K. ; Pasyuk, E. ; Peng, P. ; Phillips, J. J. ; Pisano, S. ; Pogorelko, O. ; Pozdniakov, S. ; Price, J. W. ; Procureur, S. ; Protopopescu, D. ; Puckett, A. J R ; Rimal, D. ; Ripani, M. ; Ritchie, Barry ; Rizzo, A. ; Rossi, P. ; Roy, P. ; Sabatié, F. ; Saini, M. S. ; Schott, D. ; Schumacher, R. A. ; Seder, E. ; Senderovich, I. ; Sharabian, Y. G. ; Simonyan, A. ; Smith, E. S. ; Sober, D. I. ; Sokhan, D. ; Stepanyan, S. S. ; Stoler, P. ; Strakovsky, I. I. ; Strauch, S. ; Sytnik, V. ; Taiuti, M. ; Tang, W. ; Tkachenko, S. ; Ungaro, M. ; Vernarsky, B. ; Vlassov, A. V. ; Voskanyan, H. ; Voutier, E. ; Walford, N. K. ; Watts, D. P. ; Zachariou, N. ; Zana, L. ; Zhang, J. ; Zhao, Z. W. ; Zonta, I. / Data analysis techniques, differential cross sections, and spin density matrix elements for the reaction γp→φp. In: Physical Review C - Nuclear Physics. 2014 ; Vol. 89, No. 5.
@article{899bb11cacda46b7803d5573a47f9654,
title = "Data analysis techniques, differential cross sections, and spin density matrix elements for the reaction γp→φp",
abstract = "High-statistics measurements of differential cross sections and spin density matrix elements for the reaction γp→φp have been made using the CLAS detector at Jefferson Lab. We cover center-of-mass energies (s) from 1.97 to 2.84 GeV, with an extensive coverage in the φ production angle. The high statistics of the data sample made it necessary to carefully account for the interplay between the φ natural lineshape and effects of the detector resolution, that are found to be comparable in magnitude. We study both the charged- (φ→K+K-) and neutral- (φ→KS0KL0) KK̄ decay modes of the φ. Further, for the charged mode, we differentiate between the cases where the final K- track is directly detected or its momentum reconstructed as the total missing momentum in the event. The two charged-mode topologies and the neutral-mode have different resolutions and are calibrated against each other. Extensive usage is made of kinematic fitting to improve the reconstructed φ mass resolution. Our final results are reported in 10- and mostly 30-MeV-wide s bins for the charged- and the neutral-modes, respectively. Possible effects from K+Λ* channels with pKK̄ final states are discussed. These present results constitute the most precise and extensive φ photoproduction measurements to date and in conjunction with the ω photoproduction results recently published by CLAS, will greatly improve our understanding of low energy vector meson photoproduction.",
author = "B. Dey and Meyer, {C. A.} and M. Bellis and M. Williams and Adhikari, {K. P.} and D. Adikaram and M. Aghasyan and Amaryan, {M. J.} and Anderson, {M. D.} and {Anefalos Pereira}, S. and J. Ball and Baltzell, {N. A.} and M. Battaglieri and I. Bedlinskiy and Biselli, {A. S.} and J. Bono and S. Boiarinov and Briscoe, {W. J.} and Brooks, {W. K.} and Burkert, {V. D.} and Carman, {D. S.} and A. Celentano and S. Chandavar and L. Colaneri and Cole, {P. L.} and M. Contalbrigo and O. Cortes and V. Crede and A. D'Angelo and N. Dashyan and {De Vita}, R. and {De Sanctis}, E. and A. Deur and C. Djalali and D. Doughty and Michael Dugger and R. Dupre and {El Alaoui}, A. and {El Fassi}, L. and L. Elouadrhiri and G. Fedotov and S. Fegan and Fleming, {J. A.} and M. Gar{\cc}on and N. Gevorgyan and Y. Ghandilyan and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Girod, {F. X.} and Glazier, {D. I.} and Goetz, {J. T.} and Gothe, {R. W.} and Griffioen, {K. A.} and M. Guidal and K. Hafidi and C. Hanretty and N. Harrison and M. Hattawy and K. Hicks and D. Ho and M. Holtrop and Hyde, {C. E.} and Y. Ilieva and Ireland, {D. G.} and Ishkhanov, {B. S.} and D. Jenkins and Jo, {H. S.} and K. Joo and D. Keller and M. Khandaker and A. Kim and W. Kim and A. Klein and Klein, {F. J.} and S. Koirala and V. Kubarovsky and Kuhn, {S. E.} and Kuleshov, {S. V.} and P. Lenisa and K. Livingston and H. Lu and Macgregor, {I. J D} and N. Markov and M. Mayer and McCracken, {M. E.} and B. McKinnon and T. Mineeva and M. Mirazita and V. Mokeev and Montgomery, {R. A.} and K. Moriya and H. Moutarde and E. Munevar and {Munoz Camacho}, C. and P. Nadel-Turonski and S. Niccolai and G. Niculescu and I. Niculescu and M. Osipenko and Pappalardo, {L. L.} and R. Paremuzyan and K. Park and E. Pasyuk and P. Peng and Phillips, {J. J.} and S. Pisano and O. Pogorelko and S. Pozdniakov and Price, {J. W.} and S. Procureur and D. Protopopescu and Puckett, {A. J R} and D. Rimal and M. Ripani and Barry Ritchie and A. Rizzo and P. Rossi and P. Roy and F. Sabati{\'e} and Saini, {M. S.} and D. Schott and Schumacher, {R. A.} and E. Seder and I. Senderovich and Sharabian, {Y. G.} and A. Simonyan and Smith, {E. S.} and Sober, {D. I.} and D. Sokhan and Stepanyan, {S. S.} and P. Stoler and Strakovsky, {I. I.} and S. Strauch and V. Sytnik and M. Taiuti and W. Tang and S. Tkachenko and M. Ungaro and B. Vernarsky and Vlassov, {A. V.} and H. Voskanyan and E. Voutier and Walford, {N. K.} and Watts, {D. P.} and N. Zachariou and L. Zana and J. Zhang and Zhao, {Z. W.} and I. Zonta",
year = "2014",
month = "5",
day = "27",
doi = "10.1103/PhysRevC.89.055208",
language = "English (US)",
volume = "89",
journal = "Physical Review C - Nuclear Physics",
issn = "0556-2813",
publisher = "American Physical Society",
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}

TY - JOUR

T1 - Data analysis techniques, differential cross sections, and spin density matrix elements for the reaction γp→φp

AU - Dey, B.

AU - Meyer, C. A.

AU - Bellis, M.

AU - Williams, M.

AU - Adhikari, K. P.

AU - Adikaram, D.

AU - Aghasyan, M.

AU - Amaryan, M. J.

AU - Anderson, M. D.

AU - Anefalos Pereira, S.

AU - Ball, J.

AU - Baltzell, N. A.

AU - Battaglieri, M.

AU - Bedlinskiy, I.

AU - Biselli, A. S.

AU - Bono, J.

AU - Boiarinov, S.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Burkert, V. D.

AU - Carman, D. S.

AU - Celentano, A.

AU - Chandavar, S.

AU - Colaneri, L.

AU - Cole, P. L.

AU - Contalbrigo, M.

AU - Cortes, O.

AU - Crede, V.

AU - D'Angelo, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - De Sanctis, E.

AU - Deur, A.

AU - Djalali, C.

AU - Doughty, D.

AU - Dugger, Michael

AU - Dupre, R.

AU - El Alaoui, A.

AU - El Fassi, L.

AU - Elouadrhiri, L.

AU - Fedotov, G.

AU - Fegan, S.

AU - Fleming, J. A.

AU - Garçon, M.

AU - Gevorgyan, N.

AU - Ghandilyan, Y.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Glazier, D. I.

AU - Goetz, J. T.

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guidal, M.

AU - Hafidi, K.

AU - Hanretty, C.

AU - Harrison, N.

AU - Hattawy, M.

AU - Hicks, K.

AU - Ho, D.

AU - Holtrop, M.

AU - Hyde, C. E.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkhanov, B. S.

AU - Jenkins, D.

AU - Jo, H. S.

AU - Joo, K.

AU - Keller, D.

AU - Khandaker, M.

AU - Kim, A.

AU - Kim, W.

AU - Klein, A.

AU - Klein, F. J.

AU - Koirala, S.

AU - Kubarovsky, V.

AU - Kuhn, S. E.

AU - Kuleshov, S. V.

AU - Lenisa, P.

AU - Livingston, K.

AU - Lu, H.

AU - Macgregor, I. J D

AU - Markov, N.

AU - Mayer, M.

AU - McCracken, M. E.

AU - McKinnon, B.

AU - Mineeva, T.

AU - Mirazita, M.

AU - Mokeev, V.

AU - Montgomery, R. A.

AU - Moriya, K.

AU - Moutarde, H.

AU - Munevar, E.

AU - Munoz Camacho, C.

AU - Nadel-Turonski, P.

AU - Niccolai, S.

AU - Niculescu, G.

AU - Niculescu, I.

AU - Osipenko, M.

AU - Pappalardo, L. L.

AU - Paremuzyan, R.

AU - Park, K.

AU - Pasyuk, E.

AU - Peng, P.

AU - Phillips, J. J.

AU - Pisano, S.

AU - Pogorelko, O.

AU - Pozdniakov, S.

AU - Price, J. W.

AU - Procureur, S.

AU - Protopopescu, D.

AU - Puckett, A. J R

AU - Rimal, D.

AU - Ripani, M.

AU - Ritchie, Barry

AU - Rizzo, A.

AU - Rossi, P.

AU - Roy, P.

AU - Sabatié, F.

AU - Saini, M. S.

AU - Schott, D.

AU - Schumacher, R. A.

AU - Seder, E.

AU - Senderovich, I.

AU - Sharabian, Y. G.

AU - Simonyan, A.

AU - Smith, E. S.

AU - Sober, D. I.

AU - Sokhan, D.

AU - Stepanyan, S. S.

AU - Stoler, P.

AU - Strakovsky, I. I.

AU - Strauch, S.

AU - Sytnik, V.

AU - Taiuti, M.

AU - Tang, W.

AU - Tkachenko, S.

AU - Ungaro, M.

AU - Vernarsky, B.

AU - Vlassov, A. V.

AU - Voskanyan, H.

AU - Voutier, E.

AU - Walford, N. K.

AU - Watts, D. P.

AU - Zachariou, N.

AU - Zana, L.

AU - Zhang, J.

AU - Zhao, Z. W.

AU - Zonta, I.

PY - 2014/5/27

Y1 - 2014/5/27

N2 - High-statistics measurements of differential cross sections and spin density matrix elements for the reaction γp→φp have been made using the CLAS detector at Jefferson Lab. We cover center-of-mass energies (s) from 1.97 to 2.84 GeV, with an extensive coverage in the φ production angle. The high statistics of the data sample made it necessary to carefully account for the interplay between the φ natural lineshape and effects of the detector resolution, that are found to be comparable in magnitude. We study both the charged- (φ→K+K-) and neutral- (φ→KS0KL0) KK̄ decay modes of the φ. Further, for the charged mode, we differentiate between the cases where the final K- track is directly detected or its momentum reconstructed as the total missing momentum in the event. The two charged-mode topologies and the neutral-mode have different resolutions and are calibrated against each other. Extensive usage is made of kinematic fitting to improve the reconstructed φ mass resolution. Our final results are reported in 10- and mostly 30-MeV-wide s bins for the charged- and the neutral-modes, respectively. Possible effects from K+Λ* channels with pKK̄ final states are discussed. These present results constitute the most precise and extensive φ photoproduction measurements to date and in conjunction with the ω photoproduction results recently published by CLAS, will greatly improve our understanding of low energy vector meson photoproduction.

AB - High-statistics measurements of differential cross sections and spin density matrix elements for the reaction γp→φp have been made using the CLAS detector at Jefferson Lab. We cover center-of-mass energies (s) from 1.97 to 2.84 GeV, with an extensive coverage in the φ production angle. The high statistics of the data sample made it necessary to carefully account for the interplay between the φ natural lineshape and effects of the detector resolution, that are found to be comparable in magnitude. We study both the charged- (φ→K+K-) and neutral- (φ→KS0KL0) KK̄ decay modes of the φ. Further, for the charged mode, we differentiate between the cases where the final K- track is directly detected or its momentum reconstructed as the total missing momentum in the event. The two charged-mode topologies and the neutral-mode have different resolutions and are calibrated against each other. Extensive usage is made of kinematic fitting to improve the reconstructed φ mass resolution. Our final results are reported in 10- and mostly 30-MeV-wide s bins for the charged- and the neutral-modes, respectively. Possible effects from K+Λ* channels with pKK̄ final states are discussed. These present results constitute the most precise and extensive φ photoproduction measurements to date and in conjunction with the ω photoproduction results recently published by CLAS, will greatly improve our understanding of low energy vector meson photoproduction.

UR - http://www.scopus.com/inward/record.url?scp=84901937338&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84901937338&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.89.055208

DO - 10.1103/PhysRevC.89.055208

M3 - Article

VL - 89

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 5

M1 - 055208

ER -