Measurement of the masses and widths of the ςc (2455)+ and ςc (2520)+ baryons

Authors

J. Yelton, University of Florida
I. Adachi, The Graduate University for Advanced Studies
J. K. Ahn, Korea University
H. Aihara, The University of Tokyo
S. Al Said, King Abdulaziz University
D. M. Asner, Brookhaven National Laboratory
H. Atmacan, University of Cincinnati
V. Aulchenko, Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
T. Aushev, HSE University
R. Ayad, University of Tabuk
V. Babu, Deutsches Elektronen-Synchrotron (DESY)
S. Bahinipati, Indian Institute of Technology Bhubaneswar
P. Behera, Indian Institute of Technology Madras
K. Belous, Institut fiziki vysokikh energii
J. Bennett, University of Mississippi
M. Bessner, University of Hawaiʻi at Mānoa
V. Bhardwaj, Indian Institute of Science Education and Research Mohali
B. Bhuyan, Indian Institute of Technology Guwahati
T. Bilka, Charles University

Document Type

Article

Publication Date

9-1-2021

Abstract

Using 980 fb-1 of data collected with the Belle detector operating at the KEKB asymmetric-energy e+e- collider, we report the measurements of the masses, and the first measurements of the instrinsic widths, of the ςc(2455)+ and ςc(2520)+ charmed baryons. We find M(ςc(2455)+)-M(Λc+)=166.17±0.05-0.07+0.16 MeV/c2, Γ(ςc(2455)+)=2.3±0.3±0.3 MeV/c2, M(ςc(2520)+)-M(Λc+)=230.9±0.5-0.1+0.5 MeV/c2, and Γ(ςc(2520)+)=17.2-2.1-0.7+2.3+3.1 MeV/c2, where the uncertainties are statistical and systematic, respectively. These measurements can be used to test models of the underlying quark structure of the ςc states.

Relational Format

journal article

Recommended Citation

Yelton, J., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., … Belle Collaboration. (2021). Measurement of the masses and widths of the Σ c (2455) + and Σ c +(2520) baryons. Physical Review D, 104(5), 052003. https://doi.org/10.1103/PhysRevD.104.052003

DOI

10.1103/PhysRevD.104.052003

Accessibility Status

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