H. Ohnishi

activity

20222026

Λ (1405)

measured in

d (K^{-}, n) π Σ

reactions

18 citations · 45 across the 10 of their papers we have counts for

collaborators

Showing nucl-exShow all

7 papers · 1 filter

nucl-ex2026

Direct measurement of the in-medium $η^{'}$ mass spectrum through the $γ γ$ decay channel

Y. Matsumura, N. Muramatsu, T. A. Hashimoto +58

We measured the invariant mass of the $η^{'} (958)$ meson through the $η^{'} \to γ γ$ decay channel to search for possible character change of $η^{'}$ in a nuclear mediu…

nucl-ex2026

Evidence for a $K ˉ N N$ quasi-bound state in the $γ d \to K^{0} Λ p$ reaction

R. Kobayakawa, J. K. Ahn, S. Ajimura +34

The $γ d \to K^{0} Λ p$ reaction has been studied to search for a $K ˉ N N$ quasi-bound state using the LEPS2 solenoid spectrometer at SPring-8. A localized enhancement concentrated…

nucl-ex2025★ 3 cited

Measurement of $^{3, 4}$ He( $K^{-}, π^{0}$ ) $_{Λ}^{3, 4}$ H reaction cross section and evaluation of hypertriton $Λ$ binding energy

T. Akaishi, H. Asano, X. Chen +32

Light $s$ -shell hypernuclei ( $_{Λ}^{3, 4} H$ ) and their ground-state properties are crucial benchmarks in hypernuclear physics. In particular, comparing the production cross sec…

nucl-ex2024

Measurement of the mesonic decay branch of the $K ˉ N N$ quasi-bound state

T. Yamaga, S. Ajimura, H. Asano +67

We conducted measurements of $K^{-} +^{3} He \to π Y N + N^{'}$ reactions using a $1 GeV / c$ $K^{-}$ -beam, with the objective of understanding the broad decay width of $\bar…

nucl-ex2023★ 10 cited

Measurements of high-n transitions in intermediate mass kaonic atoms by SIDDHARTA-2 at DA $Φ$ NE

F. Sgaramella, M. Tüchler, C. Amsler +38

The SIDDHARTA-2 experiment installed at the DA $Φ$ NE collider of INFN-LNF performed, for the first time, measurements of high-n transitions in intermediate mass kaonic atoms…

nucl-ex2023★ 3 cited

Precise lifetime measurement of $_{Λ}^{4}$ H hypernucleus using in-flight $^{4}$ He $(K^{-}, π^{0})_{Λ}^{4}$ H reaction

T. Akaishi, H. Asano, X. Chen +35

We present a new measurement of the $_{Λ}^{4}$ H hypernuclear lifetime using in-flight $K^{-}$ + $^{4}$ He $\to$ $_{Λ}^{4}$ H + $π^{0}$ reaction at the J-PARC hadron facility. We demonstrat…

nucl-ex2022★ 18 cited

Pole position of $Λ (1405)$ measured in $d (K^{-}, n) π Σ$ reactions

PARC E31 Collaboration, S. Aikawa, S. Ajimura +74

We measured a set of $π^{\pm} Σ^{\mp}$ , $π^{0} Σ^{0}$ , and $π^{-} Σ^{0}$ invariant mass spectra below and above the $K ˉ N$ mass threshold in $K^{-}$ -induced reactions on deuteron. We deduced th…

Direct measurement of the in-medium η′ mass spectrum through the γγ decay channel

Evidence for a KˉNN quasi-bound state in the γd→K0Λp reaction

Measurement of 3,4He(K−,π0)Λ3,4​H reaction cross section and evaluation of hypertriton Λ binding energy

Measurement of the mesonic decay branch of the KˉNN quasi-bound state

Measurements of high-n transitions in intermediate mass kaonic atoms by SIDDHARTA-2 at DAΦNE

Precise lifetime measurement of Λ4​H hypernucleus using in-flight 4He(K−,π0)Λ4​H reaction

Pole position of Λ(1405) measured in d(K−,n)πΣ reactions