التوائم المشحونة مزدوجًا في رحلة الصيد سريع

الملخص الأصلي

كما كتبه المؤلفون، بالإنجليزية arXiv:2605.15286

We study the production of pairs of doubly-charged bileptons and assess their discovery potential in light of the integrated luminosities available at the High-Luminosity LHC. The production rates are governed primarily by the bilepton mass, $$(m_Y)$$, and the mass of the exotic heavy quarks, $$(m_D)$$. We consider two complementary production channels: (i) direct bilepton pair production and (ii) bilepton production mediated through heavy-quark decays. Notably, the latter typically yields significantly enhanced cross sections and gives rise to distinctive LHC signatures, even when the bileptons are produced off-shell. The two mechanisms therefore probe complementary regions of parameter space, with direct production being predominantly sensitive to $$m_Y$$, while the heavy-quark-mediated channel depends mainly on $$m_D$$. Owing to the essentially background-free signature of four energetic leptons at the LHC, we show that Run-2 data allow a discovery only for $$m_D \lesssim 1\,\mathrm{TeV}$$, whereas the HL-LHC can achieve a $$5\sigma$$ discovery up to $$m_D \lesssim 2.5\,\mathrm{TeV}$$ (nearly independently of $$m_Y$$) and/or for $$m_Y \lesssim 2\,\mathrm{TeV}$$ (even if $$D$$ is heavy).