학술논문
Differential cross sections and polarization observables from CLAS K⁎ photoproduction and the search for new N⁎ states
Document Type
article
Author
A.V. Anisovich; K. Hicks; E. Klempt; V.A. Nikonov; A. Sarantsev; W. Tang; D. Adikaram; Z. Akbar; M.J. Amaryan; S. Anefalos Pereira; R.A. Badui; J. Ball; M. Battaglieri; V. Batourine; I. Bedlinskiy; A.S. Biselli; W.J. Briscoe; V.D. Burkert; D.S. Carman; A. Celentano; S. Chandavar; T. Chetry; G. Ciullo; L. Clark; P.L. Cole; N. Compton; M. Contalbrigo; V. Crede; A. D'Angelo; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; C. Djalali; M. Dugger; R. Dupre; H. Egiyan; A. El Alaoui; L. El Fassi; P. Eugenio; E. Fanchini; G. Fedotov; A. Filippi; J.A. Fleming; N. Gevorgyan; Y. Ghandilyan; K.L. Giovanetti; F.X. Girod; C. Gleason; R.W. Gothe; K.A. Griffioen; L. Guo; C. Hanretty; N. Harrison; M. Hattawy; M. Holtrop; S.M. Hughes; Y. Ilieva; D.G. Ireland; B.S. Ishkhanov; E.L. Isupov; D. Jenkins; H. Jiang; H.S. Jo; S. Joosten; D. Keller; G. Khachatryan; M. Khandaker; W. Kim; F.J. Klein; V. Kubarovsky; L. Lanza; P. Lenisa; K. Livingston; I.J.D. MacGregor; N. Markov; B. McKinnon; C.A. Meyer; M. Mirazita; V. Mokeev; R.A. Montgomery; A. Movsisyan; E. Munevar; C. Munoz Camacho; G. Murdoch; P. Nadel-Turonski; L.A. Net; A. Ni; S. Niccolai; I. Niculescu; M. Osipenko; A.I. Ostrovidov; M. Paolone; R. Paremuzyan; K. Park; E. Pasyuk; P. Peng; W. Phelps; S. Pisano; O. Pogorelko; J.W. Price; Y. Prok; A.J.R. Puckett; B.A. Raue; M. Ripani; B.G. Ritchie; G. Rosner; P. Roy; F. Sabatié; R.A. Schumacher; Y.G. Sharabian; Iu. Skorodumina; G.D. Smith; D. Sokhan; N. Sparveris; I. Stankovic; S. Stepanyan; S. Strauch; V. Sytnik; Ye. Tian; M. Ungaro; H. Voskanyan; E. Voutier; N.K. Walford; D.P. Watts; M.H. Wood; N. Zachariou; J. Zhang; I. Zonta
Source
Physics Letters B, Vol 771, Iss , Pp 142-150 (2017)
Subject
Language
English
ISSN
0370-2693
Abstract
The reaction γp→K⁎+Λ was measured using the CLAS detector for photon energies between the threshold and 3.9 GeV at the Thomas Jefferson National Accelerator Facility. For the first time, spin-density matrix elements have been extracted for this reaction. Differential cross sections, spin density matrix elements, and the Λ recoil polarization are compared with theoretical predictions using the BnGa partial wave analysis. The main result is the evidence for significant contributions from N(1895)1/2− and N(2100)1/2+ to the reaction. Branching ratios for decays into K⁎Λ for these resonances and further resonances are reported. Keywords: Baryon spectroscopy, Meson photoproduction, Polarization observables