کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1853513 1034275 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Search for excited electrons in ep collisions at HERA
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Search for excited electrons in ep collisions at HERA
چکیده انگلیسی
A search for excited electrons is performed using the full e±p data sample collected by the H1 experiment at HERA, corresponding to a total luminosity of 475 pb−1. The electroweak decays of excited electrons e∗→eγ, e∗→eZ and e∗→νW with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for excited electron production is found. Mass dependent exclusion limits on e∗ production cross sections and on the ratio f/Λ of the coupling to the compositeness scale are derived within gauge mediated models. These limits extend the excluded region compared to previous excited electron searches. The e∗ production via contact interactions is also addressed for the first time in ep collisions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 666, Issue 2, 14 August 2008, Pages 131-139
نویسندگان
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