TY - JOUR

T1 - Coupled channels and production of near-threshold B(⁎)B¯(⁎) resonances in e+e− annihilation

AU - Salnikov, S. G.

AU - Bondar, A. E.

AU - Milstein, A. I.

PY - 2024/1

Y1 - 2024/1

N2 - The effects of final-state interaction of hadrons, produced in e+e− annihilation near the threshold, are discussed. If there is a loosely bound state or a virtual state in a system of produced hadrons, then the energy dependence of hadroproduction cross section is very strong. Our approach is based on the use of the effective potentials accounting for the interaction between hadrons in the final state. The cases of a few channels with nonzero transition amplitudes between them are considered. It is shown that these transitions drastically change the energy dependence of the cross sections. In particular, a narrow resonance below the threshold in one channel leads to a broad peak in another channel. We explained the non-trivial energy dependence of the production cross sections of BB¯, B⁎B¯, BB¯⁎, B⁎B¯⁎ near the thresholds in e+e− annihilation and obtained good agreement between our predictions and the experimental data available.

AB - The effects of final-state interaction of hadrons, produced in e+e− annihilation near the threshold, are discussed. If there is a loosely bound state or a virtual state in a system of produced hadrons, then the energy dependence of hadroproduction cross section is very strong. Our approach is based on the use of the effective potentials accounting for the interaction between hadrons in the final state. The cases of a few channels with nonzero transition amplitudes between them are considered. It is shown that these transitions drastically change the energy dependence of the cross sections. In particular, a narrow resonance below the threshold in one channel leads to a broad peak in another channel. We explained the non-trivial energy dependence of the production cross sections of BB¯, B⁎B¯, BB¯⁎, B⁎B¯⁎ near the thresholds in e+e− annihilation and obtained good agreement between our predictions and the experimental data available.

KW - B mesons

KW - Final state interaction

KW - Hadron production

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85172809298&origin=inward&txGid=70774119c12a93390e577f3053d72d52

UR - https://www.mendeley.com/catalogue/f2dbf025-a1d1-3950-b3fa-b15b00eab858/

U2 - 10.1016/j.nuclphysa.2023.122764

DO - 10.1016/j.nuclphysa.2023.122764

M3 - Article

VL - 1041

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

M1 - 122764

ER -