@article{0a7634d1774242fda55226da5c930f94,
title = "Beam-spin asymmetry Σ for Σ− hyperon photoproduction off the neutron",
abstract = "We report a new measurement of the beam-spin asymmetry, Σ, for the γ→n→K+Σ− reaction using quasi-free neutrons in a liquid-deuterium target. The new dataset includes data at previously unmeasured photon energy and angular ranges, thereby providing new constraints on partial wave analyses used to extract properties of the excited nucleon states. The experimental data were obtained using the CEBAF Large Acceptance Spectrometer (CLAS), housed in Hall B of the Thomas Jefferson National Accelerator Facility (JLab). The CLAS detector measured reaction products from a liquid-deuterium target produced by an energy-tagged, linearly polarised photon beam with energies in the range 1.1 to 2.3 GeV. Predictions from an isobar model indicate strong sensitivity to N(1720)3/2+, Δ(1900)1/2−, and N(1895)1/2−, which corroborates results from a recent combined analysis of all KΣ channels. When our data are incorporated in the fits of partial-wave analyses, one observes significant changes in γ-n couplings of resonances which have small branching ratios to the πN channel.",
author = "{CLAS Collaboration} and N. Zachariou and E. Munevar and Berman, {B. L.} and P. Byd{\v z}ovsk{\'y} and A. Ciepl{\'y} and G. Feldman and Y. Ilieva and P. Nadel-Turonski and D. Skoupil and Sarantsev, {A. V.} and Watts, {D. P.} and Amaryan, {M. J.} and G. Angelini and Armstrong, {W. R.} and H. Atac and H. Avakian and L. Barion and M. Bashkanov and M. Battaglieri and I. Bedlinskiy and F. Benmokhtar and A. Bianconi and L. Biondo and Biselli, {A. S.} and M. Bondi and F. Boss{\`u} and S. Boiarinov and Briscoe, {W. J.} and Brooks, {W. K.} and D. Bulumulla and Burkert, {V. D.} and Carman, {D. S.} and Carvajal, {J. C.} and A. Celentano and P. Chatagnon and T. Chetry and G. Ciullo and L. Clark and Cole, {P. L.} and M. Contalbrigo and G. Costantini and V. Crede and A. D'Angelo and N. Dashyan and {De Vita}, R. and M. Defurne and A. Deur and S. Diehl and C. Djalali and M. Dugger",
note = "Funding Information: This work has been supported by the U.K. Science and Technology Facilities Council ( ST/P004385/2 , ST/T002077/1 , and ST/L00478X/2 ) grants, as well as by the Czech Science Foundation GACR grant 19-19640S . We also acknowledge the outstanding efforts of the staff of the Accelerator and Physics Divisions at Jefferson Lab that made this experiment possible. The Southeastern Universities Research Association (SURA) operated the Thomas Jefferson National Accelerator Facility for the United States Department of Energy under contract DE-AC05-06OR23177 . Further support was provided by the National Science Foundation , the Italian Istituto Nazionale di Fisica Nucleare , the Chilean Comisi{\'o}n Nacional de Investigaci{\'o}n Cient{\'i}fica y Tecnol{\'o}gica (CONICYT), the French Centre National de la Recherche Scientifique , the French Commissariat {\`a} l'{\'E}nergie Atomique , and the National Research Foundation of Korea . Publisher Copyright: {\textcopyright} 2022 The Author(s)",
year = "2022",
month = apr,
day = "10",
doi = "10.1016/j.physletb.2022.136985",
language = "English (US)",
volume = "827",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
}