کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8185565 | 1528090 | 2012 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Recent results and prospects from NA48/2: K±âÏ0l±ν and K±âÏ+Ïâe±ν, K±âÏ0Ï0e±ν decays
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
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چکیده انگلیسی
In 2003-2004 the NA48/2 Collaboration at CERN collected a large sample of K± decays. Using data taken with minimal trigger conditions, a sample of 2.5Ã106K±âÏ0μ±ν and 4.0Ã106K±âÏ0e±ν events was recorded, and allows precise measurements of the decay form factors. This report describes the event selection and the fitting procedure, and gives a preliminary result for the form factors in various parameterizations. In addition, with the full data sample collected, more than one million K±âÏ+Ïâe±ν and about 45000K±âÏ0Ï0e±ν decays has been analysed. An improved determination of the branching ratio and high precision form factor measurements for K±âÏ+Ïâe±ν, and a preliminary result for the branching ratio of K±âÏ0Ï0e±ν are presented in this paper. Future prospects include the observation of several thousands decays in similar muonic modes that will be studied at the NA62 experiment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Proceedings Supplements - Volume 233, December 2012, Pages 192-197
Journal: Nuclear Physics B - Proceedings Supplements - Volume 233, December 2012, Pages 192-197
نویسندگان
Cristina Lazzeroni, the NA48 Collaboration the NA48 Collaboration,