کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8189873 1528850 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Measurement of the effective Bs0→K+K− lifetime
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Measurement of the effective Bs0→K+K− lifetime
چکیده انگلیسی
A precise determination of the effective Bs0→K+K− lifetime can be used to constrain contributions from physics beyond the Standard Model in the Bs0 meson system. Conventional approaches select B meson decay products that are significantly displaced from the B meson production vertex. As a consequence, B mesons with low decay times are suppressed, introducing a bias to the decay time spectrum which must be corrected. This analysis uses a technique that explicitly avoids a lifetime bias by using a neural network based trigger and event selection. Using 1.0fb−1 of data recorded by the LHCb experiment, the effective Bs0→K+K− lifetime is measured as 1.455±0.046(stat.)±0.006(syst.)ps.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 716, Issues 3–5, 2 October 2012, Pages 393-400
نویسندگان
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