Inclusive spectrum of the d(π+, K+) reaction at 1.69∈GeV/c

Yudai Ichikawa; Tomofumi Nagae; Hyoungchan Bhang; Stefania Bufalino; Hiroyuki Ekawa; Petr Evtoukhovitch; Alessandro Feliciello; Hiroyuki Fujioka; Shoichi Hasegawa; Shuhei Hayakawa; Ryotaro Honda; Kenji Hosomi; Ken'Ichi Imai; Shigeru Ishimoto; Changwoo Joo; Shunsuke Kanatsuki; Ryuta Kiuchi; Takeshi Koike; Harphool Kumawat; Yuki Matsumoto; Koji Miwa; Manabu Moritsu; Megumi Naruki; Masayuki Niiyama; Yuki Nozawa; Ryosuke Ota; Atsushi Sakaguchi; Hiroyuki Sako; Valentin Samoilov; Susumu Sato; Kotaro Shirotori; Hitoshi Sugimura; Shoji Suzuki; Toshiyuki Takahashi; Tomonori N. Takahashi; Hirokazu Tamura; Toshiyuki Tanaka; Kiyoshi Tanida; Atsushi O. Tokiyasu; Zviadi Tsamalaidze; Bidyut Roy; Mifuyu Ukai; Takeshi O. Yamamoto; Seongbae Yang

doi:10.1093/ptep/ptu128

Inclusive spectrum of the d(π⁺, K⁺) reaction at 1.69∈GeV/c

Yudai Ichikawa, Tomofumi Nagae, Hyoungchan Bhang, Stefania Bufalino, Hiroyuki Ekawa, Petr Evtoukhovitch, Alessandro Feliciello, Hiroyuki Fujioka, Shoichi Hasegawa, Shuhei Hayakawa, Ryotaro Honda, Kenji Hosomi, Ken'Ichi Imai, Shigeru Ishimoto, Changwoo Joo, Shunsuke Kanatsuki, Ryuta Kiuchi, Takeshi Koike, Harphool Kumawat, Yuki MatsumotoKoji Miwa, Manabu Moritsu, Megumi Naruki, Masayuki Niiyama, Yuki Nozawa, Ryosuke Ota, Atsushi Sakaguchi, Hiroyuki Sako, Valentin Samoilov, Susumu Sato, Kotaro Shirotori, Hitoshi Sugimura, Shoji Suzuki, Toshiyuki Takahashi, Tomonori N. Takahashi, Hirokazu Tamura, Toshiyuki Tanaka, Kiyoshi Tanida, Atsushi O. Tokiyasu, Zviadi Tsamalaidze, Bidyut Roy, Mifuyu Ukai, Takeshi O. Yamamoto, Seongbae Yang

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6 Citations (Scopus)

Abstract

We have measured an inclusive missing-mass spectrum of the d(π+, K+) reaction at a pion incident momentum of 1.69∈GeV/c at laboratory scattering angles between 2\circ and 16\circ with a missing-mass resolution of 2.7 \pm 0.1MeV/c{2} (FWHM) at the missing mass of 2.27∈GeV/c{2}. In this letter, we first try to understand the spectrum as a simple quasi-free picture based on several known elementary cross sections, considering the neutron/proton Fermi motion in the deuteron. While gross spectrum structures are well understood in this picture, we have observed two distinct deviations; one peculiar enhancement at 2.13∈GeV/c{2} is due to the \Sigma N cusp, and the other notable feature is a shift of a broad bump structure, mainly originating from hyperon resonance productions of \Lambda (1405) and \Sigma (1385){+ /0}, by about 22.4 \pm 0.4 (stat.) {+2.7}-{-1.7} (syst.)∈MeV/c{2} toward the low-mass side, which is calculated in the kinematics of a proton at rest as the target.

Original language	English
Article number	101D03
Journal	Progress of Theoretical and Experimental Physics
Volume	2014
Issue number	10
DOIs	https://doi.org/10.1093/ptep/ptu128
Publication status	Published - 2014 Jul 2

ASJC Scopus subject areas

Physics and Astronomy(all)

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Ichikawa, Y., Nagae, T., Bhang, H., Bufalino, S., Ekawa, H., Evtoukhovitch, P., Feliciello, A., Fujioka, H., Hasegawa, S., Hayakawa, S., Honda, R., Hosomi, K., Imai, KI., Ishimoto, S., Joo, C., Kanatsuki, S., Kiuchi, R., Koike, T., Kumawat, H., ... Yang, S. (2014). Inclusive spectrum of the d(π⁺, K⁺) reaction at 1.69∈GeV/c. Progress of Theoretical and Experimental Physics, 2014(10), [101D03]. https://doi.org/10.1093/ptep/ptu128

Ichikawa, Y, Nagae, T, Bhang, H, Bufalino, S, Ekawa, H, Evtoukhovitch, P, Feliciello, A, Fujioka, H, Hasegawa, S, Hayakawa, S, Honda, R, Hosomi, K, Imai, KI, Ishimoto, S, Joo, C, Kanatsuki, S, Kiuchi, R, Koike, T, Kumawat, H, Matsumoto, Y, Miwa, K, Moritsu, M, Naruki, M, Niiyama, M, Nozawa, Y, Ota, R, Sakaguchi, A, Sako, H, Samoilov, V, Sato, S, Shirotori, K, Sugimura, H, Suzuki, S, Takahashi, T, Takahashi, TN, Tamura, H, Tanaka, T, Tanida, K, Tokiyasu, AO, Tsamalaidze, Z, Roy, B, Ukai, M, Yamamoto, TO & Yang, S 2014, 'Inclusive spectrum of the d(π⁺, K⁺) reaction at 1.69∈GeV/c', Progress of Theoretical and Experimental Physics, vol. 2014, no. 10, 101D03. https://doi.org/10.1093/ptep/ptu128

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title = "Inclusive spectrum of the d(π+, K+) reaction at 1.69∈GeV/c",

abstract = "We have measured an inclusive missing-mass spectrum of the d(π+, K+) reaction at a pion incident momentum of 1.69∈GeV/c at laboratory scattering angles between 2\circ and 16\circ with a missing-mass resolution of 2.7 \pm 0.1MeV/c{2} (FWHM) at the missing mass of 2.27∈GeV/c{2}. In this letter, we first try to understand the spectrum as a simple quasi-free picture based on several known elementary cross sections, considering the neutron/proton Fermi motion in the deuteron. While gross spectrum structures are well understood in this picture, we have observed two distinct deviations; one peculiar enhancement at 2.13∈GeV/c{2} is due to the \Sigma N cusp, and the other notable feature is a shift of a broad bump structure, mainly originating from hyperon resonance productions of \Lambda (1405) and \Sigma (1385){+ /0}, by about 22.4 \pm 0.4 (stat.) {+2.7}-{-1.7} (syst.)∈MeV/c{2} toward the low-mass side, which is calculated in the kinematics of a proton at rest as the target.",

author = "Yudai Ichikawa and Tomofumi Nagae and Hyoungchan Bhang and Stefania Bufalino and Hiroyuki Ekawa and Petr Evtoukhovitch and Alessandro Feliciello and Hiroyuki Fujioka and Shoichi Hasegawa and Shuhei Hayakawa and Ryotaro Honda and Kenji Hosomi and Ken'Ichi Imai and Shigeru Ishimoto and Changwoo Joo and Shunsuke Kanatsuki and Ryuta Kiuchi and Takeshi Koike and Harphool Kumawat and Yuki Matsumoto and Koji Miwa and Manabu Moritsu and Megumi Naruki and Masayuki Niiyama and Yuki Nozawa and Ryosuke Ota and Atsushi Sakaguchi and Hiroyuki Sako and Valentin Samoilov and Susumu Sato and Kotaro Shirotori and Hitoshi Sugimura and Shoji Suzuki and Toshiyuki Takahashi and Takahashi, {Tomonori N.} and Hirokazu Tamura and Toshiyuki Tanaka and Kiyoshi Tanida and Tokiyasu, {Atsushi O.} and Zviadi Tsamalaidze and Bidyut Roy and Mifuyu Ukai and Yamamoto, {Takeshi O.} and Seongbae Yang",

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doi = "10.1093/ptep/ptu128",

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T1 - Inclusive spectrum of the d(π+, K+) reaction at 1.69∈GeV/c

AU - Ichikawa, Yudai

AU - Nagae, Tomofumi

AU - Bhang, Hyoungchan

AU - Bufalino, Stefania

AU - Ekawa, Hiroyuki

AU - Evtoukhovitch, Petr

AU - Feliciello, Alessandro

AU - Fujioka, Hiroyuki

AU - Hasegawa, Shoichi

AU - Hayakawa, Shuhei

AU - Honda, Ryotaro

AU - Hosomi, Kenji

AU - Imai, Ken'Ichi

AU - Ishimoto, Shigeru

AU - Joo, Changwoo

AU - Kanatsuki, Shunsuke

AU - Kiuchi, Ryuta

AU - Koike, Takeshi

AU - Kumawat, Harphool

AU - Matsumoto, Yuki

AU - Miwa, Koji

AU - Moritsu, Manabu

AU - Naruki, Megumi

AU - Niiyama, Masayuki

AU - Nozawa, Yuki

AU - Ota, Ryosuke

AU - Sakaguchi, Atsushi

AU - Sako, Hiroyuki

AU - Samoilov, Valentin

AU - Sato, Susumu

AU - Shirotori, Kotaro

AU - Sugimura, Hitoshi

AU - Suzuki, Shoji

AU - Takahashi, Toshiyuki

AU - Takahashi, Tomonori N.

AU - Tamura, Hirokazu

AU - Tanaka, Toshiyuki

AU - Tanida, Kiyoshi

AU - Tokiyasu, Atsushi O.

AU - Tsamalaidze, Zviadi

AU - Roy, Bidyut

AU - Ukai, Mifuyu

AU - Yamamoto, Takeshi O.

AU - Yang, Seongbae

PY - 2014/7/2

Y1 - 2014/7/2

N2 - We have measured an inclusive missing-mass spectrum of the d(π+, K+) reaction at a pion incident momentum of 1.69∈GeV/c at laboratory scattering angles between 2\circ and 16\circ with a missing-mass resolution of 2.7 \pm 0.1MeV/c{2} (FWHM) at the missing mass of 2.27∈GeV/c{2}. In this letter, we first try to understand the spectrum as a simple quasi-free picture based on several known elementary cross sections, considering the neutron/proton Fermi motion in the deuteron. While gross spectrum structures are well understood in this picture, we have observed two distinct deviations; one peculiar enhancement at 2.13∈GeV/c{2} is due to the \Sigma N cusp, and the other notable feature is a shift of a broad bump structure, mainly originating from hyperon resonance productions of \Lambda (1405) and \Sigma (1385){+ /0}, by about 22.4 \pm 0.4 (stat.) {+2.7}-{-1.7} (syst.)∈MeV/c{2} toward the low-mass side, which is calculated in the kinematics of a proton at rest as the target.

AB - We have measured an inclusive missing-mass spectrum of the d(π+, K+) reaction at a pion incident momentum of 1.69∈GeV/c at laboratory scattering angles between 2\circ and 16\circ with a missing-mass resolution of 2.7 \pm 0.1MeV/c{2} (FWHM) at the missing mass of 2.27∈GeV/c{2}. In this letter, we first try to understand the spectrum as a simple quasi-free picture based on several known elementary cross sections, considering the neutron/proton Fermi motion in the deuteron. While gross spectrum structures are well understood in this picture, we have observed two distinct deviations; one peculiar enhancement at 2.13∈GeV/c{2} is due to the \Sigma N cusp, and the other notable feature is a shift of a broad bump structure, mainly originating from hyperon resonance productions of \Lambda (1405) and \Sigma (1385){+ /0}, by about 22.4 \pm 0.4 (stat.) {+2.7}-{-1.7} (syst.)∈MeV/c{2} toward the low-mass side, which is calculated in the kinematics of a proton at rest as the target.

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DO - 10.1093/ptep/ptu128

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SN - 2050-3911

VL - 2014

JO - Progress of Theoretical and Experimental Physics

JF - Progress of Theoretical and Experimental Physics

IS - 10

M1 - 101D03

ER -

Inclusive spectrum of the d(π⁺, K⁺) reaction at 1.69∈GeV/c

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