Evidence for ρ0 mass modification in the 3He(γ,ρ0)ppn reaction

被引：63

作者：

Lolos, GJ ^{[1
]}

Huber, GM

Papandreou, Z

Farzanpay, F

Iurescu, M

Weinerman, A

Garino, G

Maruyama, K

Maeda, K

Shinozaki, A

Terasawa, T

Yamazaki, H

Emura, T

Hirosawa, H

Niwa, K

Yamashita, H

Endo, S

Miyamoto, K

Sumi, Y

Leone, A

Perrino, R

机构：

[1] Univ Regina, Dept Phys, Regina, SK S4S 0A2, Canada

[2] Univ Tokyo, Inst Nucl Study, Tokyo 188, Japan

[3] Tohoku Univ, Dept Phys, Sendai, Miyagi 980, Japan

[4] Tokyo Univ Agr & Technol, Dept Appl Phys, Tokyo 184, Japan

[5] Hiroshima Univ, Dept Phys, Higashihiroshima 724, Japan

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

[7] Univ Occupat & Environm Hlth, Kitakyushu, Fukuoka 807, Japan

[8] Akita Univ, Coll Gen Educ, Akita 010, Japan

[9] Meiji Coll Pharm, Setagaya Ku, Tokyo 154, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.80.241

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Evidence for a modification of the rho(0) mass in the nuclear medium via the He-3(gamma, pi(+) pi(-))X reaction is reported here. The tagged photon energies were mostly below the rho(0) production threshold on a free nucleon, and the bound nucleon's Fermi momentum was utilized to produce the rho(0) The mass shift observed is delta m(rho 0) = 160 +/- 35 MeV/c(2) and is significantly larger than theoretical model predictions for this nucleus and nuclear matter density.

引用

页码：241 / 244

页数：4

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