کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8186516 1528775 2018 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Search for excited quarks of light and heavy flavor in γ + jet final states in proton-proton collisions at s=13TeV
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Search for excited quarks of light and heavy flavor in γ + jet final states in proton-proton collisions at s=13TeV
چکیده انگلیسی
A search is presented for excited quarks of light and heavy flavor that decay to γ+jet final states. The analysis is based on data corresponding to an integrated luminosity of 35.9fb−1 collected by the CMS experiment in proton-proton collisions at s=13TeV at the LHC. A signal would appear as a resonant contribution to the invariant mass spectrum of the γ+jet system, above the background expected from standard model processes. No resonant excess is found, and upper limits are set on the product of the excited quark cross section and its branching fraction as a function of its mass. These are the most stringent limits to date in the γ+jet final state, and exclude excited light quarks with masses below 5.5 TeV and excited b quarks with masses below 1.8 TeV, assuming standard model like coupling strengths.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 781, 10 June 2018, Pages 390-411