Observation of Spin-Dependent Charge Symmetry Breaking in ΛN Interaction: Gamma-Ray Spectroscopy of 4ΛHe

被引：73

作者：

Yamamoto, T. O. ^{[1
]}

Agnello, M. ^{[2
,3
]}

Akazawa, Y. ^{[1
]}

Amano, N. ^{[4
]}

Aoki, K. ^{[5
]}

Botta, E. ^{[3
,6
]}

Chiga, N. ^{[1
]}

Ekawa, H. ^{[7
]}

Evtoukhovitch, P. ^{[8
]}

Feliciello, A. ^{[3
]}

Fujita, M. ^{[1
]}

Gogami, T. ^{[7
]}

Hasegawa, S. ^{[9
]}

Hayakawa, S. H. ^{[10
]}

Hayakawa, T. ^{[10
]}

Honda, R. ^{[10
]}

Hosomi, K. ^{[9
]}

Hwang, S. H. ^{[9
]}

Ichige, N. ^{[1
]}

Ichikawa, Y. ^{[9
]}

Ikeda, M. ^{[1
]}

Imai, K. ^{[9
]}

Ishimoto, S. ^{[5
]}

Kanatsuki, S. ^{[7
]}

Kim, M. H. ^{[11
]}

Kim, S. H. ^{[11
]}

Kinbara, S. ^{[12
]}

Koike, T. ^{[1
]}

Lee, J. Y. ^{[13
]}

Marcello, S. ^{[3
,6
]}

Miwa, K. ^{[1
]}

Moon, T. ^{[13
]}

Nagae, T. ^{[7
]}

Nagao, S. ^{[1
]}

Nakada, Y.

Nakagawa, M. ^{[10
]}

Ogura, Y. ^{[1
]}

Sakaguchi, A. ^{[10
]}

Sako, H. ^{[9
]}

Sasaki, Y. ^{[1
]}

Sato, S. ^{[9
]}

Shiozaki, T. ^{[1
]}

Shirotori, K. ^{[14
]}

Sugimura, H. ^{[9
]}

Suto, S. ^{[1
]}

Suzuki, S. ^{[5
]}

Takahashi, T. ^{[5
]}

Tamura, H. ^{[1
]}

Tanabe, K. ^{[1
]}

Tanida, K. ^{[9
]}

机构：

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

[2] Politecn Torino, Corso Duca Abruzzi, Dipartimento Sci Applicate & Tecnol, I-10129 Turin, Italy

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

[4] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[5] High Energy Accelerator Res Org KEK, IPNS, Tsukuba, Ibaraki 3050801, Japan

[6] Univ Turin, Dipartimento Fis, I-10125 Turin, Italy

[7] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[8] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[9] Japan Atom Agcy JAEA, ASRC, Tokai, Ibaraki 3191195, Japan

[10] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan

[11] Korea Univ, Dept Phys, Seoul 136713, South Korea

[12] Gifu Univ, Fac Educ, Gifu 5011193, Japan

[13] Seoul Natl Univ, Dept Phys & Astron, Seoul 151747, South Korea

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

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 115卷 / 22期

基金：

新加坡国家研究基金会;

关键词：

LIGHT HYPERNUCLEI; HYPER-NUCLEI;

D O I：

10.1103/PhysRevLett.115.222501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The energy spacing between the spin-doublet bound state of He-4(Lambda)(1(+), 0(+)) was determined to be 1406 +/- 2 +/- 2 keV, by measuring gamma rays for the 1(+) -> 0(+) transition with a high efficiency germanium detector array in coincidence with the He-4(K-, pi(-))(Lambda)(4). He reaction at J-PARC. In comparison to the corresponding energy spacing in the mirror hypernucleus H-4(Lambda), the present result clearly indicates the existence of charge symmetry breaking (CSB) in Lambda N interaction. By combining the energy spacings with the known ground-state binding energies, it is also found that the CSB effect is large in the 0(+) ground state but is vanishingly small in the 1(+) excited state, demonstrating that the Lambda N CSB interaction has spin dependence.

引用

页数：5

共 20 条

[1] Secondary charged beam lines at the J-PARC hadron experimental hall [J].

Agari, Keizo ;

Enomoto, Shun ;

Fujioka, Hiroyuki ;

Fujiwara, Yuya ;

Hashimoto, Tadashi ;

Hayano, Ryugo S. ;

Hiraiwa, Toshihiko ;

Hirose, Erina ;

Ieiri, Masaharu ;

Igarashi, Youichi ;

Iio, Masami ;

Imazato, Jun ;

Inoue, Kentaro ;

Ishiguro, Yosuke ;

Itahashi, Kenta ;

Iwasaki, Masahiko ;

Katoh, Yohji ;

Kawasaki, Shingo ;

Kiyomichi, Akio ;

Kou, Hiroshi ;

Minakawa, Michifumi ;

Muto, Ryotaro ;

Nagae, Tomofumi ;

Naruki, Megumi ;

Noumi, Hiroyuki ;

Ohnishi, Hiroaki ;

Outa, Haruhiko ;

Sada, Yuta ;

Sakuma, Fuminori ;

Sato, Masaharu ;

Sato, Yoshinori ;

Sawada, Shin'ya ;

Shi, Hexi ;

Shirakabe, Yoshihisa ;

Suzuki, Yoshihiro ;

Takahashi, Hitoshi ;

Takahashi, Toshiyuki ;

Takasaki, Minoru ;

Tanaka, Kazuhiro H. ;

Tokuda, Makoto ;

Toyoda, Akihisa ;

Tsukada, Kyo ;

Ukai, Mifuyu ;

Watanabe, Hiroaki ;

Yamamoto, Takeshi O. ;

Yamanoi, Yutaka .

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 2012, 2012 (01)

[2] Coherent Λ-Σ coupling in s-shell hypernuclei [J].

Akaishi, Y ;

Harada, T ;

Shinmura, S ;

Myint, KS .

PHYSICAL REVIEW LETTERS, 2000, 84 (16) :3539-3541

[3] EXCITED-STATES OF LIGHT HYPERNUCLEI [J].

BAMBERGER, A ;

FAESSLER, MA ;

LYNEN, U ;

PIEKARZ, H ;

PIEKARZ, J ;

PNIEWSKI, J ;

POVH, B ;

RITTER, HG ;

SOERGEL, V .

NUCLEAR PHYSICS B, 1973, B 60 (01) :1-25

[4] OBSERVATION OF A GAMMA-TRANSITION IN H-4(LAMBDA) HYPERNUCLEUS [J].

BEDJIDIAN, M ;

FILIPKOWSKI, A ;

GROSSIORD, JY ;

GUICHARD, A ;

GUSAKOW, M ;

MAJEWSKI, S ;

PIEKARZ, H ;

PIEKARZ, J ;

PIZZI, JR .

PHYSICS LETTERS B, 1976, 62 (04) :467-470

[5] FURTHER INVESTIGATION OF THE GAMMA-TRANSITIONS IN 4 OR H AND 4 OR HE HYPER-NUCLEI [J].

BEDJIDIAN, M ;

DESCROIX, E ;

GROSSIORD, JY ;

GUICHARD, A ;

GUSAKOW, M ;

JACQUIN, M ;

KUDLA, MJ ;

PIEKARZ, H ;

PIEKARZ, J ;

PIZZI, JR ;

PNIEWSKI, J .

PHYSICS LETTERS B, 1979, 83 (02) :252-256

[6] ELECTROMAGNETIC LAMBDA-SIGMA-O MIXING AND CHARGE SYMMETRY FOR THE LAMBDA - HYPERON [J].

DALITZ, RH ;

VONHIPPEL, F .

PHYSICS LETTERS, 1964, 10 (01) :153-157

[7] FORMATION OF, AND THE GAMMA-RADIATION FROM, THE P-SHELL HYPER-NUCLEI [J].

DALITZ, RH ;

GAL, A .

ANNALS OF PHYSICS, 1978, 116 (01) :167-243

[8] Observation of Λ4H Hyperhydrogen by Decay-Pion Spectroscopy in Electron Scattering [J].

Esser, A. ;

Nagao, S. ;

Schulz, F. ;

Achenbach, P. ;

Gayoso, C. Ayerbe ;

Boehm, R. ;

Borodina, O. ;

Bosnar, D. ;

Bozkurt, V. ;

Debenjak, L. ;

Distler, M. O. ;

Friscic, I. ;

Fujii, Y. ;

Gogami, T. ;

Hashimoto, O. ;

Hirose, S. ;

Kanda, H. ;

Kaneta, M. ;

Kim, E. ;

Kohl, Y. ;

Kusaka, J. ;

Margaryan, A. ;

Merkel, H. ;

Mihovilovic, M. ;

Mueller, U. ;

Nakamura, S. N. ;

Pochodzalla, J. ;

Rappold, C. ;

Reinhold, J. ;

Saito, T. R. ;

Lorente, A. Sanchez ;

Majos, S. Sanchez ;

Schlimme, B. S. ;

Schoth, M. ;

Sfienti, C. ;

Sirca, S. ;

Tang, L. ;

Thiel, M. ;

Tsukada, K. ;

Weber, A. ;

Yoshida, K. .

PHYSICAL REVIEW LETTERS, 2015, 114 (23)

[9] Charge symmetry breaking in Λ hypernuclei revisited [J].

Gal, Avraham .

PHYSICS LETTERS B, 2015, 744 :352-357

[10]

HARADA T, COMMUNICATION

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