Measurement of the photon beam asymmetry in →γp→K+Σ0 at Eγ=8.5 GeV
| Parent link: | Physical Review C Vol. 101, iss. 6.— 2020.— [065206, 7 р.] |
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| Corporate Author: | |
| Other Authors: | , , , , , |
| Summary: | Title screen We report measurements of the photon beam asymmetry Σ for the reaction →γp→K+Σ0(1193) using the GlueX spectrometer in Hall D at Jefferson Lab. Data were collected by using a linearly polarized photon beam in the energy range of 8.2-8.8 GeV incident on a liquid hydrogen target. The beam asymmetry Σ was measured as a function of the Mandelstam variable t, and a single value of Σ was extracted for events produced in the u channel. These are the first exclusive measurements of the photon beam asymmetry Σ for the reaction in this energy range. For the t channel, the measured beam asymmetry is close to unity over the t range studied, −t=(0.1-1.4)(GeV/c)2, with an average value of Σ=1.00±0.05. This agrees with theoretical models that describe the reaction via the natural-parity exchange of the K∗(892) Regge trajectory. A value of Σ=0.41±0.09 is obtained for the u channel integrated up to −u=2.0 (GeV/c)2. |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://doi.org/10.1103/PhysRevC.101.065206 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666528 |