Diagnostic for new physics in B -> pi K decays

NCU Institutional Repository > 理學院 > 物理研究所 > 期刊論文 > Item 987654321/38925

請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/38925

題名:	Diagnostic for new physics in B -> pi K decays
作者:	Baek,S;Chiang,CW;Gronau,M;London,D;Rosner,JL
貢獻者:	物理研究所
關鍵詞:	ELECTROWEAK PENGUIN;ISOSPIN ANALYSIS;CP ASYMMETRIES;SUM-RULE;PARAMETERS;VIOLATION;MESONS;PUZZLE;GAMMA;PHASE
日期:	2009
上傳時間:	2010-07-08 13:59:23 (UTC+8)
出版者:	中央大學
摘要:	A recent analysis of B 7 K decays concludes that present data do not clearly indicate whether (i) the standard model (or Delta l= 0 new physics) is sufficient. or (ii) Delta l = 1 new physics is needed. We show that these two possibilities can be distinguished by whether a sum rule relating the CP asymmetries of the four B -> pi K decays is valid. If case (i) is favored, the sum rule holds, and one predicts A(Cp)(pi K-0(0)) = -0,15, while in case (ii) fits to new physics involving large values of a color-suppressed tree amplitude entail A(Cp)(pi K-0(0)) = -0.03. The Current experimental average A(Cp)(pi K-0(0)) = -0.01 +/- 0.10 must be measured a factor of at least three times more precisely in order to distinguish between the two cases. (C) 2009 Elsevier B.V. All rights reserved.
關聯:	PHYSICS LETTERS B
顯示於類別:	[物理研究所] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	609	檢視/開啟

在NCUIR中所有的資料項目都受到原著作權保護.

社群 sharing