کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5495439 | 1528789 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Searching for new heavy neutral gauge bosons using vector boson fusion processes at the LHC
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
New massive resonances are predicted in many extensions to the Standard Model (SM) of particle physics and constitutes one of the most promising searches for new physics at the LHC. We present a feasibility study to search for new heavy neutral gauge bosons using vector boson fusion (VBF) processes, which become especially important as the LHC probes higher collision energies. In particular, we consider the possibility that the discovery of a Zâ² boson may have eluded searches at the LHC. The coupling of the Zâ² boson to the SM quarks can be small, and thus the Zâ² would not be discoverable by the searches conducted thus far. In the context of a simplified phenomenological approach, we consider the Zâ²âÏÏ and Zâ²âμμ decay modes to show that the requirement of a dilepton pair combined with two high pT forward jets with large separation in pseudorapidity and with large dijet mass is effective in reducing SM backgrounds. The expected exclusion bounds (at 95% confidence level) are m(Zâ²)<1.8TeV and m(Zâ²)<2.5TeV in the ÏÏjfjf and μμjfjf channels, respectively, assuming 1000fbâ1 of 13 TeV data from the LHC. The use of the VBF topology to search for massive neutral gauge bosons provides a discovery reach with expected significances greater than 5Ï (3Ï) for Zâ² masses up to 1.4 (1.6) TeV and 2.0 (2.2) TeV in the ÏÏjfjf and μμjfjf channels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 767, 10 April 2017, Pages 126-132
Journal: Physics Letters B - Volume 767, 10 April 2017, Pages 126-132
نویسندگان
Andrés Flórez, Alfredo Gurrola, Will Johns, Young Do Oh, Paul Sheldon, Dylan Teague, Thomas Weiler,