We present measurements of the differential cross section and Lambda recoil polarization for the gamma p -> K(+) Lambda reaction made using the CLAS detector at Jefferson Lab. These measurements cover the center-of-mass energy range from 1.62 to 2.84 GeV and a wide range of center-of-mass K(+) production angles. Independent analyses were performed using the K(+) p pi(-) and K(+) p (missing pi(-)) final-state topologies; results from these analyses were found to exhibit good agreement. These differential-cross-section measurements show excellent agreement with previous CLAS and LEPS results and offer increased precision and a 300-MeV increase in energy coverage. The recoil polarization data agree well with previous results and offer a large increase in precision and a 500-MeV extension in energy range. The increased center-of-mass energy range that these data represent will allow for independent study of nonresonant K(+) Lambda photoproduction mechanisms at all production angles.

Mccracken, M., Bellis, M., Meyer, C., Williams, M., Adhikari, K., Anghinolfi, M., et al. (2010). Differential cross section and recoil polarization measurements for the γp→K^{+}Λ reaction using CLAS at Jefferson Lab. PHYSICAL REVIEW. C, NUCLEAR PHYSICS, 81(2), 025201-1-025201-20 [10.1103/PhysRevC.81.025201].

Differential cross section and recoil polarization measurements for the γp→K^{+}Λ reaction using CLAS at Jefferson Lab

D'ANGELO, ANNALISA;PISANO, SILVIA;
2010-02-11

Abstract

We present measurements of the differential cross section and Lambda recoil polarization for the gamma p -> K(+) Lambda reaction made using the CLAS detector at Jefferson Lab. These measurements cover the center-of-mass energy range from 1.62 to 2.84 GeV and a wide range of center-of-mass K(+) production angles. Independent analyses were performed using the K(+) p pi(-) and K(+) p (missing pi(-)) final-state topologies; results from these analyses were found to exhibit good agreement. These differential-cross-section measurements show excellent agreement with previous CLAS and LEPS results and offer increased precision and a 300-MeV increase in energy coverage. The recoil polarization data agree well with previous results and offer a large increase in precision and a 500-MeV extension in energy range. The increased center-of-mass energy range that these data represent will allow for independent study of nonresonant K(+) Lambda photoproduction mechanisms at all production angles.
11-feb-2010
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
PHOTON ENERGIES; SIGMA(0); PHOTOPRODUCTION
Clas Collaboration
http://prc.aps.org/abstract/PRC/v81/i2/e025201
Mccracken, M., Bellis, M., Meyer, C., Williams, M., Adhikari, K., Anghinolfi, M., et al. (2010). Differential cross section and recoil polarization measurements for the γp→K^{+}Λ reaction using CLAS at Jefferson Lab. PHYSICAL REVIEW. C, NUCLEAR PHYSICS, 81(2), 025201-1-025201-20 [10.1103/PhysRevC.81.025201].
Mccracken, M; Bellis, M; Meyer, C; Williams, M; Adhikari, K; Anghinolfi, M; Ball, J; Battaglieri, M; Berman, B; Biselli, A; Branford, D; Briscoe, W; Brooks, W; Burkert, V; Careccia, S; Carman, D; Cole, P; Collins, P; Crede, V; D'Angelo, A; Daniel, A; Dashyan, N; De Vita, R; De Sanctis, E; Deur, A; Dey, B; Dhamija, S; Dickson, R; Djalali, C; Doughty, D; Dugger, M; Dupre, R; El Alaoui, A; Eugenio, P; Fegan, S; Fradi, A; Gabrielyan, M; Giovanetti, K; Girod, F; Goetz, J; Gohn, W; Gothe, R; Griffioen, K; Guidal, M; Hafidi, K; Hakobyanm, H; Hanretty, C; Hassall, N; Hicks, K; Holtrop, M; Ilieva, Y; Ireland, D; Jo, H; Keller, D; Khandaker, M; Khetarpal, P; Kim, W; Klein, A; Klein, F; Kubarovsky, V; Kuleshov, S; Kuznetsov, V; Livingston, K; Mayer, M; Mcandrew, J; Mckinnon, B; Mestayer, M; Mineeva, T; Mirazita, M; Mokeev, V; Moreno, B; Moriya, K; Morrison, B; Moutarde, H; Munevar, E; Nadel Turonski, P; Niccolai, S; Niculescu, G; Niculescu, I; Osipenko, M; Ostrovidov, A; Park, K; Park, S; Pasyuk, E; Pereira, S; Perrin, Y; Pisano, S; Pogorelko, O; Pozdniakov, S; Price, J; Procureur, S; Prok, Y; Protopopescu, D; Quinn, B; Raue, B; Ricco, G; Ripani, M; Ritchie, B; Rosner, G; Rossi, P; Sabatie, F; Saini, M; Salamanca, J; Schott, D; Schumacher, R; Seder, E; Seraydaryan, H; Sharabian, Y; Sober, D; Sokhan, D; Stepanyan, S; Stoler, P; Strauch, S; Taiuti, M; Tedeschi, D; Tkachenko, S; Ungaro, M; Vernarsky, B; Vineyard, M; Watts, D; Voutier, E; Weinstein, L; Weygand, D; Wood, M; Zana, L
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/37915
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 184
  • ???jsp.display-item.citation.isi??? 177
social impact