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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:65 パーセンタイル:95.2(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:3 パーセンタイル:18.66(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.