Study of the elementary (K−, n) reactions to search for the K¯NN bound state via the 3He (K−, n) reaction at J-PARC | Zendy

T. Yamaga | Zendy; S. Ajimura | Zendy; G. Beer | Zendy; C. Berucci | Zendy; H. Bhang | Zendy; M. Bragadireanu | Zendy; P. Buehler | Zendy; L. Busso | Zendy; M. Cargnelli | Zendy; S. Choi | Zendy; C. Curceanu | Zendy; S. Enomoto | Zendy; D. Faso | Zendy; Hiroyuki Fujioka | Zendy; Yuya Fujiwara | Zendy; Tomokazu Fukuda | Zendy; C. Guaraldo | Zendy; T. Hashimoto | Zendy; R. Hayano | Zendy; T. Hiraiwa | Zendy; Iio M | Zendy; M. Iliescu | Zendy; Kentaro Inoue | Zendy; Y. Ishiguro | Zendy; Takashi Ishikawa | Zendy; S. Ishimoto | Zendy; T. Ishiwatari | Zendy; K. Itahashi | Zendy; M. Iwai | Zendy; M. Iwasaki | Zendy; Koki Kanno | Zendy; K. Kato | Zendy; Yuko Kato | Zendy; Shingo Kawasaki | Zendy; P. Kienle | Zendy; T. Kim | Zendy; H. Kou | Zendy; Y. G. | Zendy; J. Márton | Zendy; Y. Matsuda | Zendy; Y. Mizoi | Zendy; O. Morra | Zendy; T. Nagae | Zendy; H. Noumi | Zendy; H. Ohnìshì | Zendy; S. Okada | Zendy; H. Outa | Zendy; K. Piscicchia | Zendy; A. Romero Vidal | Zendy; Y. Sada | Zendy; A. Sakaguchi | Zendy; F. Sakuma | Zendy; M. Sato | Zendy; A. Scordo | Zendy; M. Sekimoto | Zendy; H. Shi | Zendy; K. Shirotori | Zendy; D. Sirghi | Zendy; F. Sirghi | Zendy; K. Suzuki | Zendy; S. Suzuki | Zendy; Takehiro Suzuki | Zendy; K. Tanida | Zendy; H. Tatsuno | Zendy; Makoto Tokuda | Zendy; D. Tomono | Zendy; A. Toyoda | Zendy; K. Tsukada | Zendy; O. Vázquez Doce | Zendy; E. Widmann | Zendy; B. K. Wuenschek | Zendy; Y. Yamazaki | Zendy; H. Yim | Zendy; Q. Zhang | Zendy; J. Zmeskal | Zendy

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Study of the elementary (K−, n) reactions to search for the K¯NN bound state via the 3He (K−, n) reaction at J-PARC

Author(s) -

T. Yamaga,

S. Ajimura,

G. Beer,

C. Berucci,

H. Bhang,

M. Bragadireanu,

P. Buehler,

L. Busso,

M. Cargnelli,

S. Choi,

C. Curceanu,

S. Enomoto,

D. Faso,

Hiroyuki Fujioka,

Yuya Fujiwara,

Tomokazu Fukuda,

C. Guaraldo,

T. Hashimoto,

R. Hayano,

T. Hiraiwa,

Iio M,

M. Iliescu,

Kentaro Inoue,

Y. Ishiguro,

Takashi Ishikawa,

S. Ishimoto,

T. Ishiwatari,

K. Itahashi,

M. Iwai,

M. Iwasaki,

Koki Kanno,

K. Kato,

Yuko Kato,

Shingo Kawasaki,

P. Kienle,

T. Kim,

H. Kou,

Y. G.,

J. Márton,

Y. Matsuda,

Y. Mizoi,

O. Morra,

T. Nagae,

H. Noumi,

H. Ohnìshì,

S. Okada,

H. Outa,

K. Piscicchia,

A. Romero Vidal,

Y. Sada,

A. Sakaguchi,

F. Sakuma,

M. Sato,

A. Scordo,

M. Sekimoto,

H. Shi,

K. Shirotori,

D. Sirghi,

F. Sirghi,

K. Suzuki,

S. Suzuki,

Takehiro Suzuki,

K. Tanida,

H. Tatsuno,

Makoto Tokuda,

D. Tomono,

A. Toyoda,

K. Tsukada,

O. Vázquez Doce,

E. Widmann,

B. K. Wuenschek,

Y. Yamazaki,

H. Yim,

Q. Zhang,

J. Zmeskal

Publication year - 2016

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4949411

Subject(s) - deuterium , mass spectrum , hadron , yield (engineering) , elementary reaction , neutron , physics , hydrogen , spectrum (functional analysis) , atomic physics , nuclear physics , chemistry , analytical chemistry (journal) , mass spectrometry , thermodynamics , kinetics , quantum mechanics , chromatography

We have searched for the simplest kaonic nuclear state, K̄NN, using the in-flight 3He (K-, n) reaction at the J-PARC hadron experimental facility. In the semi-inclusive neutron missing-mass spectrum at θnlab=0°, an excess of yield was observed just below the K- pp mass-threshold, which cannot be explained by any elementary reactions [PTEP 2015, 061D01]. To understand the missing-mass spectrum of 3He (K-, n) X, we investigated the elementary (K-, n) reactions using hydrogen and deuterium targets. The p (K-, n) X missing-mass spectrum was well described by the charge-exchange reaction. However, in the d (K-, n) X spectrum, we observed an excess of yield just below the K- p mass-threshold, which was similar to that in the 3He (K-, n) X spectrum

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