ωN Scattering Length from ω Photoproduction on the Proton near the Threshold

被引：0

作者：

Ishikawa, Takatsugu ^{[1
]}

Fujimura, Hisako ^{[1
]}

Fukasawa, Hiroshi ^{[1
]}

Hashimoto, Ryo ^{[1
]}

He, Qinghua ^{[1
]}

Honda, Yuki ^{[1
]}

Hosaka, Atsushi ^{[2
,3
]}

Iwata, Takahiro ^{[4
]}

Kaida, Shun ^{[1
]}

Kasagi, Jirohta ^{[1
]}

Kawano, Atsushi ^{[5
]}

Kuwasaki, Shuzo ^{[1
]}

Maeda, Kazushige ^{[6
]}

Masumoto, Shin'ichi ^{[7
]}

Miyabe, Manabu ^{[1
]}

Miyahara, Fusashi ^{[1
]}

Mochizuki, Keiichi ^{[1
]}

Muramatsu, Norihito ^{[1
]}

Nakamura, Akihiko ^{[1
]}

Nakamura, Satoshi X. ^{[8
]}

Nawa, Ken'ichi ^{[1
]}

Ogushi, Shoei ^{[1
]}

Okada, Yasuyuki ^{[1
]}

Okamura, Ken'yu ^{[1
]}

Onodera, Yoshihito ^{[1
]}

Ozawa, Kyoichiro ^{[9
]}

Sakamoto, Yasunobu ^{[5
]}

Sato, Mamoru ^{[1
]}

Sato, Toru ^{[2
]}

Shimizu, Hajime ^{[1
]}

Sugai, Hiroyuki ^{[1
]}

Suzuki, Koutaku ^{[1
]}

Takahashi, Shin'ichiro ^{[1
]}

Tajima, Yasuhisa ^{[4
]}

Taniguchi, Yusuke ^{[1
]}

Tsuchikawa, Yusuke ^{[1
]}

Yamazaki, Hirohito ^{[1
]}

Yamazaki, Ryuji ^{[1
]}

Yoshida, Hiroshi ^{[4
]}

机构：

[1] Tohoku Univ, Res Ctr Electron Photon Sci, Sendai, Miyagi 9820826, Japan

[2] Osaka Univ, Res Ctr Nucl Phys, Ibaraki 5670047, Japan

[3] Japan Atom Energy Agcy JAEA, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[4] Yamagata Univ, Dept Phys, Yamagata 9908560, Japan

[5] Tohoku Gakuin Univ, Dept Informat Sci, Sendai, Miyagi 9813193, Japan

[6] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[7] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[8] Univ Sci & Technol China, Hefei 230026, Peoples R China

[9] High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan

来源：

PROCEEDINGS OF THE 15TH INTERNATIONAL CONFERENCE ON MESON-NUCLEON PHYSICS AND THE STRUCTURE OF THE NUCLEON | 2020年 / 2249卷

基金：

日本学术振兴会;

关键词：

PION PHOTOPRODUCTION; NUCLEON; MONITOR;

D O I：

10.1063/5.0008651

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Although the. meson is one of the best established hadrons, its fundamental properties such as the interaction with the nucleon is not known yet due to the difficulties in realizing scattering experiments. Recently, we have performed high-precision photoproduction experiment of the omega meson from the proton near the threshold. The total cross sections are determined at incident energies ranging from 1.08 to 1.15 GeV. The 1/2 and 3/2 spin-averaged scattering length a(omega N) and effective range r(omega N) between the omega meson and nucleon are extracted from the excitation function of the total cross section using a model with the final-state omega N interaction based on the Lippmann-Schwinger equation. The obtained values are a(omega p) = (-0.97(-0.16)(+0.16)) +i (0.07(-0.14)(+0.15)) fm and r(omega p) = (+2.78(-0.54)(+0.68)) +i (-0.01(-0.50)(+0.46)) fm, suggesting a strong repulsion force.

引用

页数：7

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