Backward electroproduction of π0 mesons on protons in the region of nucleon resonances at four momentum transfer squared Q2=1.0 GeV2 -: art. no. 045203

被引：28

作者：

Laveissière, G

Degrande, N

Jaminion, S

Jutier, C

Todor, L

Di Salvo, R

Van Hoorebeke, L

Alexa, LC

Anderson, BD

Aniol, KA

Arundell, K

Audit, G

Auerbach, L

Baker, FT

Baylac, M

Berthot, J

Bertin, PY

Bertozzi, W

Bimbot, L

Boeglin, WU

Brash, EJ

Breton, V

Breuer, H

Burtin, E

Calarco, JR

Cardman, LS

Cavata, C

Chang, CC

Chen, JP

Chudakov, E

Cisbani, E

Dale, DS

de Jager, CW

De Leo, R

Deur, A

d'Hose, N

Dodge, GE

Domingo, JJ

Elouadrhiri, L

Epstein, MB

Ewell, LA

Finn, JM

Fissum, KG

Fonvieille, H

Fournier, G

Frois, B

Frullani, S

Furget, C

Gao, H

Gao, J

机构：

[1] Univ Clermont Ferrand, IN2P3, F-63177 Aubiere, France

[2] Univ Ghent, B-9000 Ghent, Belgium

[3] Old Dominion Univ, Norfolk, VA 23529 USA

[4] Univ Regina, Regina, SK S4S OA2, Canada

[5] Kent State Univ, Kent, OH 44242 USA

[6] Calif State Univ Los Angeles, Los Angeles, CA 90032 USA

[7] Coll William & Mary, Williamsburg, VA 23187 USA

[8] CEA Saclay, F-91191 Gif Sur Yvette, France

[9] Temple Univ, Philadelphia, PA 19122 USA

[10] Univ Georgia, Athens, GA 30602 USA

[11] MIT, Cambridge, MA 02139 USA

[12] Inst Phys Nucl, F-91406 Orsay, France

[13] Florida Int Univ, Miami, FL 33199 USA

[14] Univ Maryland, College Pk, MD 20742 USA

[15] Univ New Hampshire, Durham, NH 03824 USA

[16] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA

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

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

[19] Univ Kentucky, Lexington, KY 40506 USA

[20] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[21] Univ Bari, I-70126 Bari, Italy

[22] Lab Phys Subatom & Cosmol, F-38026 Grenoble, France

[23] Hampton Univ, Hampton, VA 23668 USA

[24] Rutgers State Univ, Piscataway, NJ 08855 USA

[25] Kharkov Phys & Technol Inst, UA-61108 Kharkov, Ukraine

[26] Syracuse Univ, Syracuse, NY 13244 USA

[27] Duke Univ, Durham, NC 27706 USA

[28] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

[29] Yamagata Univ, Yamagata 990, Japan

[30] Yerevan Phys Inst, Yerevan 375036, Armenia

[31] Tohoku Univ, Sendai, Miyagi 980, Japan

[32] Princeton Univ, Princeton, NJ 08544 USA

[33] Ist Nazl Fis Nucl, Sez Lecce, I-73100 Lecce, Italy

[34] Univ Virginia, Charlottesville, VA 22901 USA

[35] SUNY Stony Brook, Stony Brook, NY 11794 USA

[36] Norfolk State Univ, Norfolk, VA 23504 USA

[37] Florida State Univ, Tallahassee, FL 32306 USA

[38] N Carolina Cent Univ, Durham, NC 27707 USA

[39] Harvard Univ, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW C | 2004年 / 69卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevC.69.045203

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Exclusive electroproduction of pi(0) mesons on protons in the backward hemisphere has been studied at Q(2)=1.0 GeV2 by detecting protons in the forward direction in coincidence with scattered electrons from the 4 GeV electron beam in Jefferson Lab's Hall A. The data span the range of the total (gamma*p) center-of-mass energy W from the pion production threshold to W=2.0 GeV. The differential cross sections sigma(T)+epsilonsigma(L), sigma(TL), and sigma(TT) were separated from the azimuthal distribution and are presented together with the MAID and SAID parametrizations.

引用

页码：045203 / 1

页数：15

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