تقرير
Complementarity between neutrinoless double beta decay and collider searches for heavy neutrinos in composite-fermion models
| العنوان: | Complementarity between neutrinoless double beta decay and collider searches for heavy neutrinos in composite-fermion models |
|---|---|
| المؤلفون: | Biondini, S., Dell'Oro, S., Leonardi, R., Marcocci, S., Panella, O., Presilla, M., Vissani, F. |
| سنة النشر: | 2021 |
| المجموعة: | High Energy Physics - Phenomenology Nuclear Experiment Nuclear Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, Nuclear Experiment, Nuclear Theory |
| الوصف: | Composite-fermion models predict excited quarks and leptons with mass scales which can potentially be observed at high-energy colliders like the LHC; the most recent exclusion limits from the CMS and ATLAS Collaborations corner excited-fermion masses and the compositeness scale to the multi-TeV range. At the same time, hypothetical composite Majorana neutrinos would lead to observable effects in neutrinoless double beta decay ($0\nu \beta \beta$) experiments. In this work, we show that the current composite-neutrino exclusion limit $M_N>4.6$ TeV, as extracted from direct searches at the LHC, can indeed be further improved to $M_N>8.8$ TeV by including the bound on the nuclear transition $^{136}$Xe $\to$ $^{136}$Ba $+2e^-$. Looking ahead, the forthcoming HL-LHC will allow probing a larger portion of the parameter-space, nevertheless, it will still benefit from the complementary limit provided by $0 \nu \beta \beta$ future detectors to explore composite-neutrino masses up to $12.6$ TeV. |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2111.01053 |
| رقم الأكسشن: | edsarx.2111.01053 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |