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First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+

Publication ,  Journal Article
Moon, TJ; Tanida, K; Kato, Y; Kim, SK; Adachi, I; Ahn, JK; Aihara, H; Al Said, S; Asner, DM; Aulchenko, V; Aushev, T; Ayad, R; Babu, V ...
Published in: Physical Review D
June 1, 2021
Published version (DOI)

We report results from a study of the spin and parity of Ξc(2970)+ using a 980 fb-1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e- collider. The decay angle distributions in the chain Ξc(2970)+→Ξc(2645)0π+→Ξc+π-π+ are analyzed to determine the spin of this charmed-strange baryon. The angular distributions strongly favor the Ξc(2970)+ spin J=1/2 over 3/2 or 5/2, under an assumption that the lowest partial wave dominates in the decay. We also measure the ratio of Ξc(2970)+ decay branching fractions R=B[Ξc(2970)+→Ξc(2645)0π+]/B[Ξc(2970)+→Ξc′0π+]=1.67±0.29(stat)-0.09+0.15(syst)±0.25(IS), where the last uncertainty is due to possible isospin-symmetry-breaking effects. This R value favors the spin-parity JP=1/2+ with the spin of the light-quark degrees of freedom sl=0. This is the first determination of the spin and parity of a charmed-strange baryon.

Duke Scholars

Anselm G. Vossen
Author Anselm G. Vossen Physics
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Published In

Physical Review D

DOI

10.1103/PhysRevD.103.L111101

EISSN

2470-0029

ISSN

2470-0010

Publication Date

June 1, 2021

Volume

103

Issue

11
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Moon, T. J., Tanida, K., Kato, Y., Kim, S. K., Adachi, I., Ahn, J. K., … Lee, J. Y. (2021). First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+. Physical Review D, 103(11). https://doi.org/10.1103/PhysRevD.103.L111101
Moon, T. J., K. Tanida, Y. Kato, S. K. Kim, I. Adachi, J. K. Ahn, H. Aihara, et al. “First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+.” Physical Review D 103, no. 11 (June 1, 2021). https://doi.org/10.1103/PhysRevD.103.L111101.
Moon TJ, Tanida K, Kato Y, Kim SK, Adachi I, Ahn JK, et al. First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+. Physical Review D. 2021 Jun 1;103(11).
Moon, T. J., et al. “First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+.” Physical Review D, vol. 103, no. 11, June 2021. Scopus, doi:10.1103/PhysRevD.103.L111101.
Moon TJ, Tanida K, Kato Y, Kim SK, Adachi I, Ahn JK, Aihara H, Al Said S, Asner DM, Aulchenko V, Aushev T, Ayad R, Babu V, Bahinipati S, Behera P, Beleño C, Bennett J, Bessner M, Bhuyan B, Bilka T, Biswal J, Bonvicini G, Bozek A, Bračko M, Browder TE, Campajola M, Cao L, Červenkov D, Chang MC, Chang P, Chen A, Cheon BG, Chilikin K, Cho K, Choi SK, Choi Y, Choudhury S, Cinabro D, Cunliffe S, Dash N, De Nardo G, Di Capua F, DoleŽal Z, Dong TV, Dossett D, Dubey S, Eidelman S, Epifanov D, Ferber T, Fulsom BG, Garg R, Gaur V, Gabyshev N, Garmash A, Giri A, Goldenzweig P, Golob B, Hadjivasiliou C, Hartbrich O, Hayasaka K, Hayashii H, Hedges MT, Hou WS, Hsu CL, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jia S, Jin Y, Joo KK, Kang KH, Karyan G, Kawasaki T, Kichimi H, Kiesling C, Kim BH, Kim DY, Kim KT, Kim SH, Kim YJ, Kim YK, Kimmel TD, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, KriŽan P, Kroeger R, Krokovny P, Kuhr T, Kumar R, Kumara K, Kuzmin A, Kwon YJ, Lee IS, Lee JY. First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+. Physical Review D. 2021 Jun 1;103(11).

Published In

Physical Review D

DOI

10.1103/PhysRevD.103.L111101

EISSN

2470-0029

ISSN

2470-0010

Publication Date

June 1, 2021

Volume

103

Issue

11