Measurement of the photon beam asymmetry in →γp→K+Σ0 at Eγ=8.5 GeV; Physical Review C; Vol. 101, iss. 6

Measurement of the photon beam asymmetry in →γp→K+Σ0 at Eγ=8.5 GeV; Physical Review C; Vol. 101, iss. 6

Dettagli Bibliografici
Parent link:	Physical Review C Vol. 101, iss. 6.— 2020.— [065206, 7 р.]
Ente Autore:	Национальный исследовательский Томский политехнический университет Школа базовой инженерной подготовки Отделение математики и информатики
Altri autori:	Adhikari S., Ali A., Amaryan M., Austregesilo A., Barbosa F., Lyubovitskiy (Lyubovitskij) V. E. Valery Efimovich
Riassunto:	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.
Lingua:	inglese
Pubblicazione:	2020
Soggetti:	труды учёных ТПУ электронный ресурс фотонные пучки спектрометры мишени жидкий водород диапазоны энергия
Accesso online:	https://doi.org/10.1103/PhysRevC.101.065206
Natura:	Elettronico Capitolo di libro
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666528

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