کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1843393 | 1031540 | 2013 | 44 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Heavy neutral gauge bosons at the LHC in an extended MSSM
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Searching for heavy neutral gauge bosons Zâ², predicted in extensions of the Standard Model based on a U(1)â² gauge symmetry, is one of the challenging objectives of the experiments carried out at the Large Hadron Collider. In this paper, we study Zâ² phenomenology at hadron colliders according to several U(1)â²-based models and in the Sequential Standard Model. In particular, possible Zâ² decays into supersymmetric particles are included, in addition to the Standard Model modes so far investigated. We point out the impact of the U(1)â² group on the MSSM spectrum and, for a better understanding, we consider a few benchmarks points in the parameter space. We account for the D-term contribution, due to the breaking of U(1)â², to slepton and squark masses and investigate its effect on Zâ² decays into sfermions. Results on branching ratios and cross sections are presented, as a function of the MSSM and U(1)â² parameters, which are varied within suitable ranges. We pay special attention to final states with leptons and missing energy and make predictions on the number of events with sparticle production in Zâ² decays, for a few values of integrated luminosity and centre-of-mass energy of the LHC.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 866, Issue 3, 21 January 2013, Pages 293-336
Journal: Nuclear Physics B - Volume 866, Issue 3, 21 January 2013, Pages 293-336
نویسندگان
Gennaro Corcella, Simonetta Gentile,