- 追加された行はこの色です。
- 削除された行はこの色です。
#norelated
* Study of Hyperon Resonances below KbarN threshold via the (K-,n) reaction on deuteron [#hae650aa]
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** Introduction [#oc2fcf3e]
- Structure of Λ(1405)
~The Λ(1405) hyperon is a well-known hyperon resonance with the mass, width and spin-parity of 1405.1+1.3-1.0 MeV/c2, 50 MeV, and 1/2-, which is located just below the KbarN threshold.
There is a long-standing puzzle whether the Λ(1405) is a KbarN bound state or not.
- What we measure/How we measure?
//#ref(reaction.png,right,wrap,around)
~We propose an experiment at the J-PARC K1.8BR beam line to study the Λ(1405) hyperon via the (K-,n) reaction on deuteron, where a 1 GeV/c kaon is incident on the deuteron target knocking out a neutron at the forward angle and a recoiled kaon can be scattered with a residual nucleon to form the Λ(1405).
~The d(K-,n) reaction populates both the isospin states of '''I=0''' and '''I=1'''. All the decay final states of Λ(1405), Σ-π+, Σ+π-, and Σ0π0 are identified in order to decompose the isospin amplitude in the reaction.
** Collaboration [#dfcfe96a]
-This activity is based on the collaborative research at J-PARC.
** Activity [#z876a7d9]
- [[Beam Line]]
--
- [[Spectrometer]]
-- [[Backward Proton Chamber(BPC)>Spectrometer#BPC]]
-- [[Backward Proton Detector(BPD)>Spectrometer#BPD]]
- [[Target]]
** Event [#qf2c0d5d]
** Document [#v9783986]
- [[PAC/Review]]
- [[Conference/Symposium/Workshop]]
- [[Publication]]
- [[Others]]