Cabibbo-favored <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">Λ</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow><mml:mo linebreak="badbreak" linebreakstyle="after">+</mml:mo></mml:mrow></mml:msubsup><mml:mo stretchy="false">→</mml:mo><mml:mi mathvariant="normal">Λ</mml:mi><mml:msub><mml:mrow><mml:mi>a</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msub><mml:msup><mml:mrow><mml:mo…
نویسندگان
چکیده
The anti-triplet charmed baryon decays with the light scalar mesons are rarely measured, whereas recent observation of Cabibbo-favored Λc+→Ληπ+ decay hints a possible Λc+→Λa0(980)+,a0(980)+→ηπ+ process. We hence study Λc+→Λa0(980)+ decay. Particularly, it is found that final state interaction can give significant contribution, where Σ+(1385) and η in Λc+→Σ+(1385)η by exchanging charged pion transformed as Λ a0(980)+, respectively. Accordingly, we predict B(Λc+→Λa0(980)+)=(1.7−1.0+2.8±0.3)×10−3, accessible to BESIII, BELLEII LHCb experiments.
منابع مشابه
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A definite relative phase and amplitude exists between the doubly-Cabibbosuppressed amplitude for D → KM and the Cabibbo-favored amplitude forD → K0M0, whereM = (π, η, η): A(D → KM) = − tan θCA(D → K 0 M). Here θC is the Cabibbo angle. This relation, although previously recognized (for M = π) as a consequence of the U-spin subgroup of SU(3), is argued to be less sensitive to corrections involvi...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2021
ISSN: ['0370-2693', '1873-2445']
DOI: https://doi.org/10.1016/j.physletb.2021.136586