Research output: Contribution to journal › Article › peer-review
Final-state interaction in the process e → Λc Λ ¯ c. / Milstein, A. I.; Salnikov, S. G.
In: Physical Review D, Vol. 105, No. 7, 074002, 01.04.2022.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Final-state interaction in the process e → Λc Λ ¯ c
AU - Milstein, A. I.
AU - Salnikov, S. G.
N1 - Publisher Copyright: © 2022 authors. Published by the American Physical Society. Funded by SCOAP3.
PY - 2022/4/1
Y1 - 2022/4/1
N2 - We show that the final-state interaction explains the nontrivial near-threshold energy dependence of the cross section of the process e→ΛcΛ¯c observed by the Belle and BESIII collaborations. This energy dependence is the result of the mixture of S-wave and D-wave components of the ΛcΛ¯c wave function due to a tensor interaction. The Coulomb potential is important only in the narrow energy region about a few MeV above the threshold of the process. It is shown that the widely used assumption that the impact of the Coulomb interaction on the cross sections of hadron production is reduced to the Sommerfeld-Gamow-Sakharov factor is not correct.
AB - We show that the final-state interaction explains the nontrivial near-threshold energy dependence of the cross section of the process e→ΛcΛ¯c observed by the Belle and BESIII collaborations. This energy dependence is the result of the mixture of S-wave and D-wave components of the ΛcΛ¯c wave function due to a tensor interaction. The Coulomb potential is important only in the narrow energy region about a few MeV above the threshold of the process. It is shown that the widely used assumption that the impact of the Coulomb interaction on the cross sections of hadron production is reduced to the Sommerfeld-Gamow-Sakharov factor is not correct.
UR - http://www.scopus.com/inward/record.url?scp=85128701693&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.105.074002
DO - 10.1103/PhysRevD.105.074002
M3 - Article
AN - SCOPUS:85128701693
VL - 105
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 7
M1 - 074002
ER -
ID: 36029279