## Beam-spin asymmetry $\boldsymbolΣ$ for $Σ^-$ hyperon photoproduction off the neutron

Research output: Working paperPreprint

### Standard

Beam-spin asymmetry $\boldsymbolΣ$ for $Σ^-$ hyperon photoproduction off the neutron. / Zachariou, Nicholas; Munevar, Edwin; Berman, Barry et al.

arXiv, 2022.

Research output: Working paperPreprint

### Harvard

Zachariou, N, Munevar, E, Berman, B, Bydzovsky, P, Cieply, A, Feldman, G, Ilieva, Y, Nadel-Turonski, P, Skoupil, D, Sarantsev, A & Watts, D 2022 'Beam-spin asymmetry $\boldsymbolΣ$ for $Σ^-$ hyperon photoproduction off the neutron' arXiv. <https://arxiv.org/abs/2106.13957>

### APA

Zachariou, N., Munevar, E., Berman, B., Bydzovsky, P., Cieply, A., Feldman, G., Ilieva, Y., Nadel-Turonski, P., Skoupil, D., Sarantsev, A., & Watts, D. (2022). Beam-spin asymmetry $\boldsymbolΣ$ for $Σ^-$ hyperon photoproduction off the neutron. arXiv. https://arxiv.org/abs/2106.13957

### Vancouver

Zachariou N, Munevar E, Berman B, Bydzovsky P, Cieply A, Feldman G et al. Beam-spin asymmetry $\boldsymbolΣ$ for $Σ^-$ hyperon photoproduction off the neutron. arXiv. 2022 Mar 14.

### Author

Zachariou, Nicholas ; Munevar, Edwin ; Berman, Barry et al. / Beam-spin asymmetry $\boldsymbolΣ$ for $Σ^-$ hyperon photoproduction off the neutron. arXiv, 2022.

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title = "Beam-spin asymmetry $\boldsymbolΣ$ for $Σ^-$ hyperon photoproduction off the neutron",
abstract = " We report a new measurement of the beam-spin asymmetry $\boldsymbol{\Sigma}$ for the $\vec{\gamma} n \rightarrow K^+\Sigma^-$ 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 $N(1720)3/2^+$, $\Delta(1900)1/2^-$, and $N(1895)1/2^-$, with the latter being a state not considered in previous photoproduction analyses. When our data are incorporated in the fits of partial-wave analyses, one observes significant changes in $\gamma$-$n$ couplings of the resonances which have small branching ratios to the $\pi N$ channel. ",
keywords = "nucl-ex, hep-ex",
author = "Nicholas Zachariou and Edwin Munevar and Barry Berman and Petr Bydzovsky and Ales Cieply and Gerald Feldman and Yordanka Ilieva and Pawel Nadel-Turonski and Dalipor Skoupil and Andrey Sarantsev and Dan Watts",
note = "9 pages, 4 figures, Hadron Spectroscopy",
year = "2022",
month = mar,
day = "14",
language = "English",
publisher = "arXiv",
type = "WorkingPaper",
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TY - UNPB

T1 - Beam-spin asymmetry $\boldsymbolΣ$ for $Σ^-$ hyperon photoproduction off the neutron

AU - Zachariou, Nicholas

AU - Munevar, Edwin

AU - Berman, Barry

AU - Bydzovsky, Petr

AU - Cieply, Ales

AU - Feldman, Gerald

AU - Ilieva, Yordanka

AU - Skoupil, Dalipor

AU - Sarantsev, Andrey

AU - Watts, Dan

N1 - 9 pages, 4 figures, Hadron Spectroscopy

PY - 2022/3/14

Y1 - 2022/3/14

N2 - We report a new measurement of the beam-spin asymmetry $\boldsymbol{\Sigma}$ for the $\vec{\gamma} n \rightarrow K^+\Sigma^-$ 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 $N(1720)3/2^+$, $\Delta(1900)1/2^-$, and $N(1895)1/2^-$, with the latter being a state not considered in previous photoproduction analyses. When our data are incorporated in the fits of partial-wave analyses, one observes significant changes in $\gamma$-$n$ couplings of the resonances which have small branching ratios to the $\pi N$ channel.

AB - We report a new measurement of the beam-spin asymmetry $\boldsymbol{\Sigma}$ for the $\vec{\gamma} n \rightarrow K^+\Sigma^-$ 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 $N(1720)3/2^+$, $\Delta(1900)1/2^-$, and $N(1895)1/2^-$, with the latter being a state not considered in previous photoproduction analyses. When our data are incorporated in the fits of partial-wave analyses, one observes significant changes in $\gamma$-$n$ couplings of the resonances which have small branching ratios to the $\pi N$ channel.

KW - nucl-ex

KW - hep-ex

M3 - Preprint

BT - Beam-spin asymmetry $\boldsymbolΣ$ for $Σ^-$ hyperon photoproduction off the neutron

PB - arXiv

ER -