K̄ and nucleus system studied by 12C(K−, p) spectrum | Zendy

Y. Ichikawa | Zendy; J. Yamagata-Sekihara | Zendy; J. K. Ahn | Zendy; Y. Akazawa | Zendy; K. Aoki | Zendy; Elena Bottta | Zendy; H. Ekawa | Zendy; P. Evtoukhovitch | Zendy; A. Feliciello | Zendy; Manami Fujita | Zendy; T. Gogami | Zendy; Shoichi Hasegawa | Zendy; Tomoyuki Hasegawa | Zendy; S. Hayakawa | Zendy; T. Hayakawa | Zendy; Satoru Hirenzaki | Zendy; R. Honda | Zendy; Kenji Hosomi | Zendy; Kenichi Imai | Zendy; Wooseung Jung | Zendy; S. Kanatsuki | Zendy; Shin Hyung Kim | Zendy; S. Kinbara | Zendy; Kazuya Kobayashi | Zendy; Jaeyong Lee | Zendy; Simonetta Marcello | Zendy; K. Miwa | Zendy; Taejin Moon | Zendy; T. Nagae | Zendy; Yoshiyuki Nakada | Zendy; Manami Nakagawa | Zendy; T. Nanamura | Zendy; M. Naruki | Zendy; A. Sakaguchi | Zendy; H. Sako | Zendy; Susumu Sato | Zendy; Yuki Sasaki | Zendy; K. Shirotori | Zendy; Hitoshi Sugimura | Zendy; T. Takahashi | Zendy; Hirokazu Tamura | Zendy; K. Tanida | Zendy; Z. Tsamalaidze | Zendy; M. Ukai | Zendy; T. O. Yamamoto | Zendy

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K̄ and nucleus system studied by 12C(K−, p) spectrum

Author(s) -

Y. Ichikawa,

J. Yamagata-Sekihara,

J. K. Ahn,

Y. Akazawa,

K. Aoki,

Elena Bottta,

H. Ekawa,

P. Evtoukhovitch,

A. Feliciello,

Manami Fujita,

T. Gogami,

Shoichi Hasegawa,

Tomoyuki Hasegawa,

S. Hayakawa,

T. Hayakawa,

Satoru Hirenzaki,

R. Honda,

Kenji Hosomi,

Kenichi Imai,

Wooseung Jung,

S. Kanatsuki,

Shin Hyung Kim,

S. Kinbara,

Kazuya Kobayashi,

Jaeyong Lee,

Simonetta Marcello,

K. Miwa,

Taejin Moon,

T. Nagae,

Yoshiyuki Nakada,

Manami Nakagawa,

T. Nanamura,

M. Naruki,

A. Sakaguchi,

H. Sako,

Susumu Sato,

Yuki Sasaki,

K. Shirotori,

Hitoshi Sugimura,

T. Takahashi,

Hirokazu Tamura,

K. Tanida,

Z. Tsamalaidze,

M. Ukai,

T. O. Yamamoto

Publication year - 2019

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.5118414

Subject(s) - physics , nucleus , beam energy , atomic physics , spectrum (functional analysis) , momentum (technical analysis) , energy spectrum , bound state , mass spectrum , nuclear physics , energy (signal processing) , beam (structure) , particle physics , mass spectrometry , optics , quantum mechanics , finance , economics , biology , microbiology and biotechnology

We have measured an inclusive missing-mass spectrum of the 12 C(K−, p) reaction over wide energy region at the kaon incident momentum of 1.8 GeV/c at J-PARC K1.8 beam line. This measurement was carried out as a by-product of a pilot run of J-PARC E05 experiment, which searched for the Ξ-hypernuclei via 12C(K−, K+) reaction. We have compared the observed missing-mass spectrum with a DWIA calculation to study the K-nucleus interaction. In this comparison, we have changed the depth of both real and imaginary parts of the optical potential between the K and nucleus. It is found that the observed spectrum is best reproduced by the calculation of the potential depth of V0 ∼ −80 MeV (real part) and W0 ∼ −40 MeV (imaginary part). On the other hand, we have observed a definitive excess around the deeply bound region BK ≳ 100 MeV. The excess cannot be explained by the any optical potential and quasi-free background reaction. It is well fitted with a Breit-Wigner function with a binding energy of 90 MeV and a width of 100 MeV, which can be interpreted as a deeply bound Λ(1405) nucleus.We have measured an inclusive missing-mass spectrum of the 12 C(K−, p) reaction over wide energy region at the kaon incident momentum of 1.8 GeV/c at J-PARC K1.8 beam line. This measurement was carried out as a by-product of a pilot run of J-PARC E05 experiment, which searched for the Ξ-hypernuclei via 12C(K−, K+) reaction. We have compared the observed missing-mass spectrum with a DWIA calculation to study the K-nucleus interaction. In this comparison, we have changed the depth of both real and imaginary parts of the optical potential between the K and nucleus. It is found that the observed spectrum is best reproduced by the calculation of the potential depth of V0 ∼ −80 MeV (real part) and W0 ∼ −40 MeV (imaginary part). On the other hand, we have observed a definitive excess around the deeply bound region BK ≳ 100 MeV. The excess cannot be explained by the any optical potential and quasi-free background reaction. It is well fitted with a Breit-Wigner function with a binding energy of 90 MeV and a widt...

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