Observation of χ c J → 4 K S 0

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doi:10.1103/PhysRevD.99.052008

Title: Observation of $χ_{c J} \to 4 K_{S}^{0}$

Journal Article · Fri Mar 22 00:00:00 EDT 2019 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.99.052008· OSTI ID:1503946

Ablikim, M.; Achasov, M. N.; Ahmed, S.; Albrecht, M.; Alekseev, M.; Amoroso, A.; An, F. F.; An, Q.; Bai, Y.; Bakina, O.; Ferroli, R. Baldini; Ban, Y.; Begzsuren, K.; Bennett, D. W.; Bennett, J. V.; Berger, N.; Bertani, M.; Bettoni, D.; Bianchi, F.; Boger, E. more »

By analyzing $$(448.1\pm{}2.9)\times{}1{0}^{6}$$ $${\psi}(3686)$$ events collected with the BESIII detector operating at the BEPCII collider, the decays of $${{\chi}}_{cJ}{\rightarrow}4{K}_{S}^{0}$$ ($J=0$, 1, 2) are observed for the first time with statistical significances of $$26.5{\sigma}$$, $$5.9{\sigma}$$ and $$11.4{\sigma}$$, respectively. The product branching fractions of $${\psi}(3686){\rightarrow}{\gamma}{{\chi}}_{cJ}$$, $${{\chi}}_{cJ}{\rightarrow}4{K}_{S}^{0}$$ are presented, and the branching fractions of $${{\chi}}_{cJ}{\rightarrow}4{K}_{S}^{0}$$ decays are determined to be $${\mathcal{B}}_{{{\chi}}_{c0}{\rightarrow}4{K}_{S}^{0}}=(5.76\pm{}0.34\pm{}0.38)\times{}1{0}^{{-}4}$$, $${\mathcal{B}}_{{{\chi}}_{c1}{\rightarrow}4{K}_{S}^{0}}=(0.35\pm{}0.09\pm{}0.03)\times{}1{0}^{{-}4}$$ and $${\mathcal{B}}_{{{\chi}}_{c2}{\rightarrow}4{K}_{S}^{0}}=(1.14\pm{}0.15\pm{}0.08)\times{}1{0}^{{-}4}$$, where the first uncertainties are statistical and the second are systematic, respectively.

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Research Organization:: Indiana Univ., Bloomington, IN (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of Hawaii, Honolulu, HI (United States); Univ. of Minnesota, Minneapolis, MN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: BESIII Collaboration

Grant/Contract Number:: FG02-05ER41374; SC0010118; SC0010504; SC0012069

OSTI ID:: 1503946

Alternate ID(s):: OSTI ID: 1504146

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Vol. 99 Journal Issue: 5; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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