Resonance and nonresonant contributions to three-body Ds+→π+π0η′ decay

被引：0

作者：

Amirkhanlou, Elnaz ^{[1
]}

Mohammadi, Behnam ^{[1
]}

机构：

[1] Urmia Univ, Dept Phys, Orumiyeh, Iran

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2025年 / 40卷 / 01期

关键词：

Standard model; D meson decays; factorization; branching ratio;

D O I：

10.1142/S0217751X24501574

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The D-s(+)->pi(+)pi(0)eta ' decay has been observed nonresonant as well as through rho i resonances. The experimental values of its branching ratio are <5.1% for nonresonant process and (5.6 +/- 0.8)% for nonresonant and resonance phases together, which are tabulated by Particle Data Group (PDG) collaboration. Recently, the BESIII collaboration has reported a measurement of the branching fraction for D-s(+)->pi(+)pi(0)eta ' decay with the value of (6.15 +/- 0.25 +/- 0.18)%. In this work, we have presented an analysis of the branching fraction for this decay that has been calculated under the factorization approach. We have obtained the resonance and nonresonant amplitudes with annihilation corrections in our computation. Our result for the nonresonant branching ratio is (5.02 +/- 0.80)%, which is comparable to the experimental result of PDG collaboration. Considering the nonresonant and resonance contributions, the theoretical value of the branching ratio is & Bernoullis;(D-s(+)->pi(+)pi(0)eta ')=(5.89 +/- 0.95)%, which is in agreement with the reported experimental value.

引用

页数：10

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