Электронный каталог

Статья

Ablikim, M.
Measurement of the Absolute Branching Fraction of the Three-Body Decay *L*+&sub(c)*>*X*0K*+*p*0 and Search for *L*+&sub(c)*>nK*+*p*0, *S*0K*+*p*0, and *LK*+*p*0 / 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]. – 2024. – Vol. 109, No. 5. – P. 052001. – URL: https://doi.org/10.1103/PhysRevD.109.052001. – Bibliogr.: 53.

The Cabbibo-favored decay Λþ c → Ξ0Kþπ0 is studied for the first time using 6.1 fb−1 of eþe− collision data at center-of-mass energies between 4.600 and 4.840 GeV, collected with the BESIII detector at the BEPCII collider. With a double-tag method, the branching fraction of the three-body decay Λþ c → Ξ0Kþπ0 is measured to be (7.79 *( 1.46 *( 0.95) × 10−3, where the first and second uncertainties are statistical and systematic, respectively. The branching fraction of the two-body decay Λþ c → Ξ(1530)*0Kþ is (5.99 *( 1.04 *( 0.32) × 10−3, which is consistent with the previous result of (5.02 *( 0.99 *( 0.31) × 10−3. In addition, the upper limit on the branching fraction of the doubly Cabbibo-suppressed decay Λþ c → nKþπ0 is 7.1 × 10−4 at the 90% confidence level. The upper limits on the branching fractions of Λþ c → Σ0Kþπ0 and ΛKþπ0 are also determined to be 1.8 × 10−3 and 2.0 × 10−3, respectively.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 332.7 - Встречные е+е- и мю+мю- пучки