Abstract
We have analyzed data of the DISTO experiment on the exclusive
pp
!
p
K
þ
reaction at 2.85 GeV to
search for a strongly bound compact
K
pp
ð
X
Þ
state to be formed in the
pp
!
K
þ
þ
X
reaction. The
observed spectra of the
K
þ
missing mass and the
p
invariant-mass with high transverse momenta of
p
and
K
þ
revealed a broad distinct peak of
26
-
confidence with a mass
M
X
¼
2267
3
ð
stat
Þ
5
ð
syst
Þ
MeV
=c
2
and a width
X
¼
118
8
ð
stat
Þ
10
ð
syst
Þ
MeV
. The enormously large cross section
indicates formation of a compact
K
pp
with a large binding energy of
B
K
¼
103 MeV
, which can be a
possible gateway toward cold and dense kaonic nuclear matter.
Lingua originale | Inglese |
---|---|
pagine (da-a) | 132502-1-132502-5 |
Numero di pagine | 6 |
Rivista | Physical Review Letters |
Volume | 104 |
Numero di pubblicazione | 13 |
DOI | |
Stato di pubblicazione | Pubblicato - 1 gen 2010 |