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Observation of an alternative chi(c0)(2P) candidate in e(+)e(-)-˃ J/psi D(D)over-bar

Title
Observation of an alternative chi(c0)(2P) candidate in e(+)e(-)-˃ J/psi D(D)over-bar
Author
천병구
Keywords
CROSS-SECTION; BELLE; IDENTIFICATION; DETECTOR; MODEL; KEKB
Issue Date
2017-06
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v. 95, no. 11, Article no. 112003
Abstract
We perform a full amplitude analysis of the process e(+)e(-)-> J/psi D (D) over bar, where D refers to either D-0 or D+. A new charmoniumlike state X*(3860) that decays to D (D) over bar is observed with a significance of 6.5 sigma. Its mass is (3862(-32)(+26) (+40)(-13) )MeV= c(2), and its width is (201(-67) (+154)(-82) (+88)) MeV. The J(PC) = 0(++) hypothesis is favored over the 2(++) hypothesis at the level of 2.5s. The analysis is based on the 980 fb(-1) data sample collected by the Belle detector at the asymmetric-energy e(+)e(-)collider KEKB.
URI
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.95.112003https://repository.hanyang.ac.kr/handle/20.500.11754/114428
ISSN
2470-0010; 2470-0029
DOI
10.1103/PhysRevD.95.112003
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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