کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1823327 1526422 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An improved method for measuring muon energy using the truncated mean of dE/dx
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
پیش نمایش صفحه اول مقاله
An improved method for measuring muon energy using the truncated mean of dE/dx
چکیده انگلیسی

The measurement of muon energy is critical for many analyses in large Cherenkov detectors, particularly those that involve separating extraterrestrial neutrinos from the atmospheric neutrino background. Muon energy has traditionally been determined by measuring the specific energy loss (dE/dx) along the muon's path and relating the dE/dx   to the muon energy. Because high-energy muons (Eμ>1TeV) lose energy randomly, the spread in dE/dx   values is quite large, leading to a typical energy resolution of 0.29 in log10(Eμ)log10(Eμ) for a muon observed over a 1 km path length in the IceCube detector. In this paper, we present an improved method that uses a truncated mean and other techniques to determine the muon energy. The muon track is divided into separate segments with individual dE/dx values. The elimination of segments with the highest dE/dx results in an overall dE/dx   that is more closely correlated to the muon energy. This method results in an energy resolution of 0.22 in log10(Eμ)log10(Eμ), which gives a 26% improvement. This technique is applicable to any large water or ice detector and potentially to large scintillator or liquid argon detectors.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 703, 1 March 2013, Pages 190–198
نویسندگان
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