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Статья

Ablikim, M.
Search for a Scalar Partner of the X(3872) Via *q(3770) Decays into *g*h*h' and *g*p*+*p*-J/*q / M.Ablikim, O.Bakina, I.Boyko, G.Chelkov, D.Dedovich, I.Denysenko, P.Egorov, A.Guskov, Y.Nefedov, S.Pogodin, A.Sarantsev, A.Zhemchugov, [a.o.] // Physical Review D [Electronic resource]. – 2023. – Vol.108, No.5. – P.052012. – URL: https://doi.org/10.1103/PhysRevD.108.052012. – Bibliogr.:56.

Using a data sample corresponding to an integrated luminosity of 2.93  fb−1 collected at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider, we search for a scalar partner of the X(3872), denoted as X(3700), via ψ(3770)→γηη′ and γπ+π−J/ψ processes. No significant signals are observed and the upper limits of the product branching fractions B(ψ(3770)→γX(3700))⋅B(X(3700)→ηη′) and B(ψ(3770)→γX(3700))⋅B(X(3700)→π+π−J/ψ) are determined at the 90% confidence level, for the narrow X(3700) with a mass ranging from 3710 to 3740  MeV/c2, which are from 0.9 to 1.9(×10−5) and 0.9 to 3.4(×10−5), respectively.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 332.7 - Встречные е+е- и мю+мю- пучки