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

共 19 条

[11] ENHANCEMENT OF LOW-MASS DILEPTONS IN HEAVY-ION COLLISIONS [J].

LI, GQ ;

KO, CM ;

BROWN, GE .

PHYSICAL REVIEW LETTERS, 1995, 75 (22) :4007-4010

[12] The large-acceptance spectrometer TAGX for photoreaction studies at the 1.3-GeV Tokyo electron synchrotron [J].

Maruyama, K ;

Garino, G ;

Kato, S ;

Koike, M ;

Murata, Y ;

Mutou, M ;

Niki, K ;

Yoshida, K ;

Asai, M ;

Asano, S ;

Endo, I ;

Endo, S ;

Harada, M ;

Kasai, S ;

Miyamoto, K ;

Sumi, Y ;

Sasaki, A ;

Hossain, K ;

Papandreou, Z ;

Hasai, H ;

Iwatani, K ;

Leone, A ;

Perrino, R ;

Wada, Y ;

Maki, T ;

Farzanpay, F ;

Huber, GM ;

Iurescu, M ;

Lolos, GJ ;

Weinerman, A ;

Hisadomi, A ;

Itoh, H ;

Maruo, S ;

Murooka, H ;

Naridomi, R ;

Ogata, T ;

Kim, JC ;

Lasiuk, B ;

Rangacharyulu, C ;

Konno, O ;

Shinozaki, A ;

Terasawa, T ;

Yamazaki, H ;

Maeda, K ;

Suda, T ;

Shimizu, H ;

Emura, T ;

Hirosawa, H ;

Niwa, K ;

Miyamoto, H .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1996, 376 (03) :335-355

[13]

PAPANDREOU Z, IN PRESS

[14] rho-meson mass in light nuclei [J].

Saito, K ;

Tsushima, K ;

Thomas, AW .

PHYSICAL REVIEW C, 1997, 56 (01) :566-569

[15] VARIATIONS OF HADRON MASSES AND MATTER PROPERTIES IN DENSE NUCLEAR-MATTER [J].

SAITO, K ;

THOMAS, AW .

PHYSICAL REVIEW C, 1995, 51 (05) :2757-2764

[16] Effective isovector NN interaction strengths determined from the Si-28((p)over-right-arrow,(p)over-right-arrow')Si-28(6(-).T=1) reaction [J].

Stephenson, EJ ;

Liu, J ;

Bacher, AD ;

Bowyer, SM ;

Chang, S ;

Olmer, C ;

Wells, SP ;

Wissink, SW .

PHYSICAL REVIEW LETTERS, 1997, 78 (09) :1636-1639

[17] Single and double delta production in the He-3(gamma,pi(+)pi(-)) reaction at 380<=E-gamma<=700 MeV [J].

Watts, DG ;

Huber, GM ;

Lolos, GJ ;

Lasiuk, B ;

Kato, S ;

Koike, M ;

Maruyama, K ;

Niki, K ;

Wada, Y ;

Maeda, K ;

Suda, T ;

Emura, T ;

Miyamoto, H ;

Endo, S ;

Sumi, Y ;

Konno, O ;

Yamazaki, H ;

Itoh, H ;

Maki, T ;

Sasaki, A .

PHYSICAL REVIEW C, 1997, 55 (04) :1832-1842

[18]

WURM JP, 1995, NUCL PHYS A, V590, P93

[19]

1968, PHYS REV, V75, P1669

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