Differential cross section and recoil polarization measurements for the gamma p -> K+ Lambda reaction using CLAS at Jefferson Lab

CLAS Collaboration; M. E. McCracken; M. Bellis; C. A. Meyer; M. Williams; K. P. Adhikari; M. Anghinolfi; J. Ball; M. Battaglieri; B. L. Berman; A. S. Biselli; D. Branford; W. J. Briscoe; W. K. Brooks; V. D. Burkert; S. L. Careccia; D. S. Carman; P. L. Cole; P. Collins; V. Crede; A. D'Angelo; A. Daniel; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; B. Dey; S. Dhamija; R. Dickson; C. Djalali; D. Doughty; M. Dugger; R. Dupre; A. El Alaoui; P. Eugenio; S. Fegan; A. Fradi; M. Y. Gabrielyan; K. L. Giovanetti; F. X. Girod; J. T. Goetz; W. Gohn; R. W. Gothe; K. A. Griffioen; M. Guidal; K. Hafidi; H. Hakobyanm; C. Hanretty; N. Hassall; K. Hicks; D. Watts

doi:10.1103/PhysRevC.81.025201

Differential cross section and recoil polarization measurements for the gamma p -> K+ Lambda reaction using CLAS at Jefferson Lab

CLAS Collaboration, M. E. McCracken, M. Bellis, C. A. Meyer, M. Williams, K. P. Adhikari, M. Anghinolfi, J. Ball, M. Battaglieri, B. L. Berman, A. S. Biselli, D. Branford, W. J. Briscoe, W. K. Brooks, V. D. Burkert, S. L. Careccia, D. S. Carman, P. L. Cole, P. Collins, V. CredeA. D'Angelo, A. Daniel, N. Dashyan, R. De Vita, E. De Sanctis, A. Deur, B. Dey, S. Dhamija, R. Dickson, C. Djalali, D. Doughty, M. Dugger, R. Dupre, A. El Alaoui, P. Eugenio, S. Fegan, A. Fradi, M. Y. Gabrielyan, K. L. Giovanetti, F. X. Girod, J. T. Goetz, W. Gohn, R. W. Gothe, K. A. Griffioen, M. Guidal, K. Hafidi, H. Hakobyanm, C. Hanretty, N. Hassall, K. Hicks, D. Watts

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

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.

Original language	English
Article number	025201
Pages (from-to)	-
Number of pages	20
Journal	Physical Review C
Volume	81
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.81.025201
Publication status	Published - Feb 2010

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10.1103/PhysRevC.81.025201

Illuminating strongly interacting matter
Watts, D.
STFC
1/06/09 → 31/12/13
Project: Research

Cite this

CLAS Collaboration, McCracken, M. E., Bellis, M., Meyer, C. A., Williams, M., Adhikari, K. P., Anghinolfi, M., Ball, J., Battaglieri, M., Berman, B. L., Biselli, A. S., Branford, D., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Careccia, S. L., Carman, D. S., Cole, P. L., Collins, P., ... Watts, D. (2010). Differential cross section and recoil polarization measurements for the gamma p -> K+ Lambda reaction using CLAS at Jefferson Lab. Physical Review C, 81(2), -. Article 025201. https://doi.org/10.1103/PhysRevC.81.025201

@article{c750d100b3a54588ba175f6290250801,

title = "Differential cross section and recoil polarization measurements for the gamma p -> K+ Lambda reaction using CLAS at Jefferson Lab",

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.",

author = "{CLAS Collaboration} and McCracken, {M. E.} and M. Bellis and Meyer, {C. A.} and M. Williams and Adhikari, {K. P.} and M. Anghinolfi and J. Ball and M. Battaglieri and Berman, {B. L.} and Biselli, {A. S.} and D. Branford and Briscoe, {W. J.} and Brooks, {W. K.} and Burkert, {V. D.} and Careccia, {S. L.} and Carman, {D. S.} and Cole, {P. L.} and P. Collins and V. Crede and A. D'Angelo and A. Daniel and N. Dashyan and {De Vita}, R. and {De Sanctis}, E. and A. Deur and B. Dey and S. Dhamija and R. Dickson and C. Djalali and D. Doughty and M. Dugger and R. Dupre and {El Alaoui}, A. and P. Eugenio and S. Fegan and A. Fradi and Gabrielyan, {M. Y.} and Giovanetti, {K. L.} and Girod, {F. X.} and Goetz, {J. T.} and W. Gohn and Gothe, {R. W.} and Griffioen, {K. A.} and M. Guidal and K. Hafidi and H. Hakobyanm and C. Hanretty and N. Hassall and K. Hicks and D. Watts",

year = "2010",

month = feb,

doi = "10.1103/PhysRevC.81.025201",

language = "English",

volume = "81",

pages = "--",

journal = "Physical Review C",

issn = "0556-2813",

publisher = "American Physical Society",

number = "2",

}

CLAS Collaboration, McCracken, ME, Bellis, M, Meyer, CA, Williams, M, Adhikari, KP, Anghinolfi, M, Ball, J, Battaglieri, M, Berman, BL, Biselli, AS, Branford, D, Briscoe, WJ, Brooks, WK, Burkert, VD, Careccia, SL, Carman, DS, Cole, PL, 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, MY, Giovanetti, KL, Girod, FX, Goetz, JT, Gohn, W, Gothe, RW, Griffioen, KA, Guidal, M, Hafidi, K, Hakobyanm, H, Hanretty, C, Hassall, N, Hicks, K & Watts, D 2010, 'Differential cross section and recoil polarization measurements for the gamma p -> K+ Lambda reaction using CLAS at Jefferson Lab', Physical Review C, vol. 81, no. 2, 025201, pp. -. https://doi.org/10.1103/PhysRevC.81.025201

TY - JOUR

T1 - Differential cross section and recoil polarization measurements for the gamma p -> K+ Lambda reaction using CLAS at Jefferson Lab

AU - CLAS Collaboration

AU - McCracken, M. E.

AU - Bellis, M.

AU - Meyer, C. A.

AU - Williams, M.

AU - Adhikari, K. P.

AU - Anghinolfi, M.

AU - Ball, J.

AU - Battaglieri, M.

AU - Berman, B. L.

AU - Biselli, A. S.

AU - Branford, D.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Burkert, V. D.

AU - Careccia, S. L.

AU - Carman, D. S.

AU - Cole, P. L.

AU - Collins, P.

AU - Crede, V.

AU - D'Angelo, A.

AU - Daniel, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - De Sanctis, E.

AU - Deur, A.

AU - Dey, B.

AU - Dhamija, S.

AU - Dickson, R.

AU - Djalali, C.

AU - Doughty, D.

AU - Dugger, M.

AU - Dupre, R.

AU - El Alaoui, A.

AU - Eugenio, P.

AU - Fegan, S.

AU - Fradi, A.

AU - Gabrielyan, M. Y.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Goetz, J. T.

AU - Gohn, W.

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guidal, M.

AU - Hafidi, K.

AU - Hakobyanm, H.

AU - Hanretty, C.

AU - Hassall, N.

AU - Hicks, K.

AU - Watts, D.

PY - 2010/2

Y1 - 2010/2

N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevC.81.025201

DO - 10.1103/PhysRevC.81.025201

M3 - Article

SN - 0556-2813

VL - 81

SP - -

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 025201

ER -

Differential cross section and recoil polarization measurements for the gamma p -> K+ Lambda reaction using CLAS at Jefferson Lab

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Illuminating strongly interacting matter

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