Importance of Higher Twist Effects to Understand Charmed Color-Suppressed $B$ Decays

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dc.creatorLi, Zuo-Hong
dc.creatorSu, Zhong-Qian
dc.creatorCui, Jian-Ying
dc.date2006-02-25
dc.date.accessioned2026-07-07T07:02:49Z
dc.date.available2026-07-07T07:02:49Z
dc.descriptionWorking within the framework of the QCD light cone sum rules (LCSR), we compute and discuss the nonfactorizable higher twist effect in $\bar{B}^0\to D^{*0}π^0$ to make an all-around examination of its role in the charmed color-suppressed B decays. Analogously to the case of $\bar{B}^0\to D^{0}π^0$, such effect turns out to be of the same strong phase as the factorizable amplitude, and modifies constructively the magnitude by order $(40-90)%$ so that the effective coefficient $a_2^{f}=C_1+C_2/3$ receives a positive correction comparable numerically with it. Nonleading as the soft effect in question is, our findings for it, along with the previous LCSR analyses of $\bar{B}^0\to D^{0}π^0$, are suggestive of the dominance of soft exchanges in these charmed color suppressed B decays. Also, the emphases are put on importance of understanding intensively various related higher twist and transverse momentum effects to interpret the data on $B \to D^{0(*0)}(π^0,η,η'),J/ψK^{(*)}$.
dc.descriptionLatex, 11 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/hep-ph/0602231
dc.identifierhttp://arxiv.org/abs/hep-ph/0602231
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/108744
dc.subjectHigh Energy Physics - Phenomenology
dc.titleImportance of Higher Twist Effects to Understand Charmed Color-Suppressed $B$ Decays
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