New measurement of Σ beam asymmetry for η meson photoproduction on the proton

被引：173

作者：

Ajaka, J

Anghinolfi, M

Bellini, V

Berrier, G

Bocquet, JP

Breuer, M

Calvat, PM

Capogni, M

Casano, LE

Castoldi, M

Ciciani, L

Corvisiero, P

D'Angelo, A

Didelez, JP

Di Salvo, R

Djalali, C

Duval, MA

Frascaria, R

Gervino, G

Ghio, F

Girard, P

Girolami, B

Guinault, E

Hoffmann-Rothe, P

Hourany, E

Kilvington, I

Kouznetsov, V

Lapik, A

Sandri, PL

Moricciani, D

Morlet, M

Nedorezov, V

Nicoletti, L

Perrin, C

Rebreyend, D

Renard, F

Ripani, M

Rosier, L

Rossi, P

Roudot, F

Russew, T

Sanzone, M

Schaerf, C

Sperduto, ML

Sudov, A

Taiuti, M

Turinge, A

Van de Wiele, J

Zucchiatti, A

机构：

[1] Inst Phys Nucl, IN2P3, F-91406 Orsay, France

[2] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[3] Univ Genoa, I-16146 Genoa, Italy

[4] Ist Nazl Fis Nucl, Lab Nazl Sud, I-95123 Catania, Italy

[5] Catania Univ, I-95123 Catania, Italy

[6] Inst Nucl Sci, IN2P3, F-38026 Grenoble, France

[7] Univ Roma Tor Vergata, I-00133 Rome, Italy

[8] Ist Nazl Fis Nucl, Sez Roma 2, I-00133 Rome, Italy

[9] Univ Turin, I-10125 Turin, Italy

[10] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

[11] Ist Super Sanita, I-00161 Rome, Italy

[12] Ist Nazl Fis Nucl, Sez Sanita, I-00161 Rome, Italy

[13] European Synchrotron Radiat Facil, F-38026 Grenoble, France

[14] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

[15] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[16] IV Kurchatov Atom Energy Inst, Moscow 123182, Russia

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.81.1797

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present new Sigma beam asymmetry data for eta meson photoproduction on the proton, using a novel tagged, laser backscattered, linearly polarized photon beam up to 1.1 GeV. The data show large, positive asymmetries, at all incident photon energies. In addition to the S-11(1535) and D-13(1520) resonances necessary to reproduce the cross sections, P-13(1720) and D-15(1675) "four stars" resonances contribute to the Sigma observable, but cannot reproduce the strong forward asymmetries measured at energies higher than 900 MeV.

引用

页码：1797 / 1800

页数：4

共 31 条

[1] UPDATED ANALYSIS OF PI-N ELASTIC-SCATTERING DATA TO 2.1-GEV - THE BARYON SPECTRUM [J].