Polarization observable measurements for γp → K+Λ and γp → K+Σfor energies up to 1.5 GeV

被引：0

作者：

A. Lleres

O. Bartalini

V. Bellini

J. P. Bocquet

P. Calvat

M. Capogni

L. Casano

M. Castoldi

A. D'Angelo

J. -P. Didelez

R. Di Salvo

A. Fantini

C. Gaulard

G. Gervino

F. Ghio

B. Girolami

A. Giusa

M. Guidal

E. Hourany

V. Kouznetsov

R. Kunne

A. Lapik

P. Levi Sandri

D. Moricciani

A. N. Mushkarenkov

V. Nedorezov

L. Nicoletti

C. Perrin

C. Randieri

D. Rebreyend

F. Renard

N. Rudnev

T. Russew

G. Russo

C. Schaerf

M. -L. Sperduto

M. -C. Sutera

A. Turinge

机构：

[1] Laboratoire de Physique Subatomique et de Cosmologie,IN2P3

[2] Università di Roma “Tor Vergata”,Dipartimento di Fisica

[3] Università di Torino,Dipartimento di Fisica Sperimentale

[4] Laboratori Nazionali di Frascati,INFN

[5] Laboratori Nazionali del Sud,INFN

[6] Sezione di Catania,INFN

[7] Sezione di Genova,INFN

[8] Sezione di Roma,INFN

[9] Sezione di Roma Tor Vergata,INFN

[10] Sezione di Torino,INFN

[11] Istituto Superiore di Sanità,Dipartimento di Fisica ed Astronomia

[12] Università di Catania,IN2P3

[13] Institute for Nuclear Research,undefined

[14] Institut de Physique Nucléaire,undefined

来源：

The European Physical Journal A | 2007年 / 31卷

关键词：

13.60.Le Meson production; 13.88.+e Polarization in interactions and scattering; 25.20.Lj Photoproduction reactions;

D O I：

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中图分类号：

学科分类号：

摘要：

Beam asymmetries and hyperon recoil polarizations for the reactions γp → K+Λ and γp → K+Σ0 have been measured from the threshold production to 1500MeV with the GRAAL facility located at the ESRF in Grenoble. These results complement the database for the beam asymmetry, covering for the first time the production threshold region. Recent theoretical analyses are presented for which the beam asymmetry data bring interesting new information and allow to better determine some resonance parameters. Most importantly, these results strengthen the need of a new D13 state around 1900MeV.

引用

页码：79 / 93

页数：14

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