The Σp scattering experiment has just been started at J-PARC this year (2018). We made ”Σ beam factory” a reality where a beam with an intensity of more than 5 × 105 Σ beam per day could be produced by using 20 M/spill π beam. The CATCH system, which is a dedicated system to detect recoil proton from the Σp scattering, operated stably under the high counting rate, and its successful operation was confirmed by identifying the pp scattering events in J-PARC. In the June beam time, the production run of the Σp scattering was carried out for 2 days, which was just 10% of the requested beam time. The remaining beam time of the Σp channel and the Σ+p channel will take place in the spring of 2019.

1.
O.
Hashimoto
and
H.
Tamura
,
Prog. Part. Nucl. Phys.
57
,
564
(
2006
).
2.
M.
Oka
and
K.
Shimizu
and
K.
Yazaki
,
Nucl. Phys. A
464
,
700
(
1987
).
3.
C.
Nakamoto
,
Y.
Suzuki
and
Y.
Fujiwara
,
Prog. Theor. Phys.
94
,
65
(
1995
).
4.
T.A.
Rijken
,
M.M.
Nagels
and
Y.
Yamamoto
,
Prog. Thoer. Phys. Suppl.
185
,
14
(
2010
).
5.
J.
Haidenbauer
,
S.
Petschauer
N.
Kaiser
,
U.-G.
Meibner
,
A.
Nogga
and
W.
Weise
,
Nucl. Phys. A
915
,
24
(
2013
).
6.
P.B.
Demorest
 et al 
Nature
467
,
1081
(
2010
).
7.
H.
Noumi
JPS Conf. Proc.
13
,
010017
(
2017
).
8.
K.
Miwa
 et al 
JPS Conf. Proc.
17
,
012004
(
2017
).
9.
Y.
Nakada
 et al 
JPS Conf. Proc.
17
,
043002
(
2017
).
10.
R.
Honda
,
K.
Miwa
,
Y.
Matsumoto
,
N.
Chiga
,
S.
Hasegawa
and
K.
Imai
,
Nucl. Instrum. Meth. A
787
,
157
(
2015
).
11.
H.
Sugimura
 et al,
Phys. Lett. B
729
,
39
(
2014
).
12.
R.
Honda
 et al,
Phys. Rev. C
96
,
014005
(
2017
).
13.
Y.
Akazawa
,
Doctor thesis
,
Tohoku university
(
2018
).
14.
Y.
Kondo
 et al 
Nucl. Phys. A
676
,
371
(
2000
).
This content is only available via PDF.