Quasi-two-body decays B(s) → D(ρ(1450), ρ(1700)) → Dππ in the perturbative QCD factorization approach

被引：27

作者：

Ma, Ai-Jun ^{[1
,2
]}

Li, Ya ^{[1
,2
]}

Wang, Wen-Fei ^{[3
]}

Xiao, Zhen-Jun ^{[1
,2
,4
]}

机构：

[1] Nanjing Normal Univ, Dept Phys, Nanjing 210023, Jiangsu, Peoples R China

[2] Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210023, Jiangsu, Peoples R China

[3] Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Shanxi, Peoples R China

[4] Nanjing Normal Univ, Jiangsu Key Lab Numer Simulat Large Scale Complex, Nanjing 210023, Jiangsu, Peoples R China

来源：

PHYSICAL REVIEW D | 2017年 / 96卷 / 09期

基金：

中国国家自然科学基金;

关键词：

NONLEPTONIC B-DECAYS; WAVE-FUNCTIONS; CP VIOLATION; ISOBAR MODEL; RHO; PIONS;

D O I：

10.1103/PhysRevD.96.093011

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

By employing a framework for the quasi-two-body decays in the perturbative QCD (PQCD) factorization approach, we calculate the branching ratios of the decays B-(s) -> D(rho(1450), rho(1700)) -> D pi pi with D = (D-(s), (D) over bar ((s))). The pion vector form factor F-pi, acquired from a BABAR Collaboration analysis of e(+) e(-) -> pi(+)pi(-)(gamma) data, is involved in the two-pion distribution amplitudes Phi(I=1)(pi pi). The PQCD predictions for the branching ratios of the considered quasi-two-body decays are in the range of 10(-10)-10(-4). The PQCD predictions for B(B degrees -> (D) over bar degrees(rho degrees(1450), rho degrees(1700)) -> (D) over bar degrees pi(+)pi(-)) agree well with the measured values as reported by LHCb if one takes still large theoretical enors into account. Unlike the traditional way of the PQCD approach, one can extract the decay rates for the two-body decays B-(s) -> D(rho(1450), rho(1700)) from the results of the corresponding quasi-two-body decays. The PQCD predictions for B(B-(s) -> D-rho(1450)) and B(B)((s)) -> D rho(770)) are similar in magnitude: an interesting relation to be tested by future experimental measurements.

引用

页数：8

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