2014/12/10 by Gang Li, Chun-Sheng An, Li, Gang +11
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.1412.3221
6 pages, 3 figures
arxiv created 2014/12/10 · openalex publication_date 2014/12/10 · arxiv updated 2014/12/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Apart from the charmful decay channels of Y(4260), the charmless decay channels of Y(4260) also provide us a good platform to study the nature and the decay mechanism of Y(4260). In this paper, we propose to probe the structure of Y(4260) through the charmless decays Y(4260)→ VP via intermediate D1 D+c.c. meson loops, where V and P stand for light vector and pseudoscalar mesons, respectively. Under the molecule ansatz of Y(4260), the predicted total branching ratio BRVP for all Y(4260)→ VP processes are about (0.34+0.32-0.23)% to (0.75+0.72-0.52)% with the cutoff parameter α=2∼ 3. Numerical results show that the intermediate D1 D+c.c. meson loops may be a possible transition mechanism in the Y(4260)→ VP decays. These predicted branching ratios are the same order to that of Y(4260) → Zc+(3900) π-, which may be an evidence of D1D molecule and can be examined by the forthcoming BESIII data in the near future.