UTFSM VERTICAL positivo

1 LOGO azul

 

header area inv 2

area2 480

area2 320

Física Experimental de Alta Energía

Publicaciones

Transverse polarization of Σ+(1189) in photoproduction on a hydrogen target in CLAS

Publicaciones

Transverse polarization of Σ+(1189) in photoproduction on a hydrogen target in CLAS

Research areas:

Física Experimental de Alta Energía

Year:

2013

Type of Publication:

In Proceeding

Authors:

Journal:

Phys.Lett.

Volume:

B722

Pages:

6

Abstract:

Experimental results on the Σ+(1189) hyperon transverse polarization in photoproduction on a hydrogen target using the CLAS detector at Jefferson Laboratory are presented. The Σ+(1189) was reconstructed in the exclusive reaction γ+p→KS0+Σ+(1189) via the Σ+→pπ0 decay mode. The KS0 was reconstructed in the invariant mass of two oppositely charged pions with the π0 identified in the missing mass of the detected pπ+π− final state. Experimental data were collected in the photon energy range Eγ=1.0–3.5 GeV (s range 1.66–2.73 GeV). We observe a large negative polarization of up to 95%. As the mechanism of transverse polarization of hyperons produced in unpolarized photoproduction experiments is still not well understood, these results will help to distinguish between different theoretical models on hyperon production and provide valuable information for the searches of missing baryon resonances.

[Volver]