Measurement of the ratio and the time-integrated CP asymmetry in D⁰→π⁺π⁻π⁰

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• 作者：Belle Collaboration ; K. Arinstein ; I. Adachi ; H. Aihara ; V. Aulchenko ; T. Aushev ; T. Aziz ; S. Bahinipati ; A.M. Bakich ; V. Balagura ; E. Barberio ; A. Bay ; I. Bedny ; K. Belous ; V. Bhardwaj ; U. Bitenc ; S.
• 关键词： ; none ; color ; black"" href=""/science?_ob=MathURL&_method=retrieve&_udi=B6TVN-4RY6WKW-5&_mathId=mml54&_user=1067359&_cdi=5539&_rdoc=5&_acct=C000050221&_version=1&_userid=10&md5=e998078f9d0a70b79d01cc68d6149e0c"" ti
• 刊名：Physics Letters B
• 出版年：2008
• 出版时间：17 April 2008
• 年：2008
• 卷：662
• 期：2
• 页码：102-110
• 全文大小：412 K

文摘

We report a high-statistics measurement of the relative branching fraction l49"">href=""/science?_ob=MathURL&_method=retrieve&_udi=B6TVN-4RY6WKW-5&_mathId=mml49&_user=1067359&_cdi=5539&_rdoc=5&_acct=C000050221&_version=1&_userid=10&md5=9dfb428860debbba2214941ade864b6f"">http://www.sciencedirect.com/cache/MiamiImageURL/B6TVN-4RY6WKW-5-8J/0?wchp=dGLbVzW-zSkzS"" alt=""View the MathML source"" title=""View the MathML source"" align=""absbottom"" border=""0"" height=18 width=""269""/> using a 532 fb⁻¹ data sample collected with the Belle detector at the KEKB asymmetric-energy href=""/science?_ob=MathURL&_method=retrieve&_udi=B6TVN-4RY6WKW-5&_mathId=mml50&_user=1067359&_cdi=5539&_rdoc=5&_acct=C000050221&_version=1&_userid=10&md5=a1c9828270fecf4badf33a4e119c4237"" title=""Click to view the MathML source"" alt=""Click to view the MathML source"">e⁺e⁻ collider. The measured value of the relative branching fraction is href=""/science?_ob=MathURL&_method=retrieve&_udi=B6TVN-4RY6WKW-5&_mathId=mml51&_user=1067359&_cdi=5539&_rdoc=5&_acct=C000050221&_version=1&_userid=10&md5=8a88c51dc839ee40f9044ee59c0f1315"">http://www.sciencedirect.com/cache/MiamiImageURL/B6TVN-4RY6WKW-5-C0/0?wchp=dGLbVzW-zSkzS"" alt=""View the MathML source"" title=""View the MathML source"" align=""absbottom"" border=""0"" height=18 width=""554""/>, which has an accuracy comparable to the world average. We also present a measurement of the time-integrated CP asymmetry in href=""/science?_ob=MathURL&_method=retrieve&_udi=B6TVN-4RY6WKW-5&_mathId=mml52&_user=1067359&_cdi=5539&_rdoc=5&_acct=C000050221&_version=1&_userid=10&md5=e2eb05869464a212c38e335bae40c413"" title=""Click to view the MathML source"" alt=""Click to view the MathML source"">D⁰→π⁺π⁻π⁰ decay. The result, href=""/science?_ob=MathURL&_method=retrieve&_udi=B6TVN-4RY6WKW-5&_mathId=mml53&_user=1067359&_cdi=5539&_rdoc=5&_acct=C000050221&_version=1&_userid=10&md5=c63b0f4099278597f677d01a6d410efa"" title=""Click to view the MathML source"" alt=""Click to view the MathML source"">A_CP=(0.43±1.30) % , shows no significant CP violation.