کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1835271 1526778 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Measurement of the ISR-FSR interference in the e+e−→μ+μ−γ and π+π−γ processes at BaBar
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Measurement of the ISR-FSR interference in the e+e−→μ+μ−γ and π+π−γ processes at BaBar
چکیده انگلیسی

The charge asymmetry in the e+e−→μ+μ−γ and π+π−γ processes is measured using of data collected with the BaBar detector at e+e− center-of-mass energies near 10.58 GeV. The asymmetry as a function of the final state mass from production threshold to a few GeV, is compared to the values expected from QED for e+e−→μ+μ−γ, and theoretical models for e+e−→π+π−γ. A clear interference pattern is observed in e+e−→π+π−γ, particularly in the vicinity of the f2(1270) resonance. The inferred rate of lowest order FSR production is consistent with the QED expectation for e+e−→μ+μ−γ, and very small for e+e−→π+π−γ.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear and Particle Physics Proceedings - Volume 260, March 2015, Pages 93-97