Abstract
The Born cross sections are measured for the first time for the processes e+e−→Ds*+Ds0*(2317)−+c.c. and e+e−→Ds*+Ds1(2460)−+c.c. at the center-of-mass energy s=4.600 GeV, 4.612 GeV, 4.626 GeV, 4.640 GeV, 4.660 GeV, 4.68 GeV, and 4.700 GeV, and for e+e−→Ds*+Ds1(2536)−+c.c. at s=4.660 GeV, 4.680 GeV, and 4.700 GeV, using data samples collected with the BESIII detector at the BEPCII collider. No structures are observed in cross-section distributions for any of the processes.Received 7 June 2021Accepted 4 August 2021DOI:https://doi.org/10.1103/PhysRevD.104.032012Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.Published by the American Physical SocietyPhysics Subject Headings (PhySH)Physical SystemsCharmed mesonsLepton collidersQuarkoniaParticles & Fields
Highlights
The Dþs meson and its excited states are formed from csquark-antiquark pairs
Three excited P-wave states above the DðÃÞK threshold have been observed at the CLEO, BABAR, Belle, and BESIII experiments [1,2,3,4,5,6,7,8,9]
Nfit δÞð1 þ δvpÞεDÃsþ where Nfit is the fitted D−sJ signal yield, 1 þ δ is the radiative correction factor obtained from a QED calculation with 1% accuracy [51] using the KKMC generator, 1 þ δvp is the vacuum polarization factor, which is taken from Ref. [52], and Lint is the integrated luminosity at each energy point
Summary
The Dþs meson and its excited states are formed from csquark-antiquark pairs. Throughout the paper, chargeconjugation is implied. Three excited P-wave states above the DðÃÞK threshold have been observed at the CLEO, BABAR, Belle, and BESIII experiments [1,2,3,4,5,6,7,8,9]. They are referred to as DÃs0ð2317Þþ, Ds1ð2460Þþ, and Ds1ð2536Þþ, and are assigned the spin-parity quantum numbers JP as 0þ, 1þ, and 1þ, respectively [10], matching the predictions from the heavy-quark effective theory [11,12]. BESIII extended these studies to higher excited states by measuring the cross sections of eþe− → Dþs Ds1ð2460Þ−. [46,47,48] are used to simulate DÃsþ → γDþs and Dþs → KþK−πþ, respectively
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
