کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1846731 1528109 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A precise new KLOE measurement of 2|Fπ| with ISR events and determination of ππ contribution to aμ for 0.592<Mππ<0.975 GeV
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
A precise new KLOE measurement of 2|Fπ| with ISR events and determination of ππ contribution to aμ for 0.592<Mππ<0.975 GeV
چکیده انگلیسی

The KLOE experiment at the DAΦNE ϕ-factory has performed a new precise measurement of the pion form factor using Initial State Radiation events, with photons emitted at small polar angle. Results based on an integrated luminosity of 240 pb−1 and extraction of the ππ contribution to aμ in the mass range are presented. The new value of has smaller (30%) statistical and systematic error and is consistent with the KLOE published value (confirming the current disagreement between the standard model prediction for aμ and the measured value).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Proceedings Supplements - Volume 189, April 2009, Pages 233-238