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Yelton, J.*; 谷田 聖; Belle Collaboration*; 他177名*
Physical Review D, 97(5), p.051102_1 - 051102_6, 2018/03
被引用回数:82 パーセンタイル:95.34(Astronomy & Astrophysics)Using the entire Belle data sample of 980 of
collisions, we present the results of a study of excited
charmed baryons in the decay mode
. We show confirmation of four of the five narrow states reported by the LHCb Collaboration: the
,
,
, and
.
Shen, C. P.*; 谷田 聖; Belle Collaboration*; 他177名*
Physical Review D, 93(11), p.112017_1 - 112017_9, 2016/06
被引用回数:4 パーセンタイル:21.90(Astronomy & Astrophysics)The process and its intermediate processes are measured for the first time using a 980 fb
data sample collected with the Belle detector at the KEKB asymmetric-energy
collider. The production of
and a
(
) signal in the
(
) invariant mass spectrum are clearly observed. However, no evidence for an exotic baryon near 1540 MeV/
, denoted as
(
) or
(
), is seen in the
(
) or
(
) invariant mass spectra. Cross sections for
,
and the products
and
are measured. We also determine upper limits on the products of the
and
two-photon decay widths and their branching fractions to
at the 90% credibility level.