Publications associées à Search for heavy neutrinos or third-generation leptoquarks in final states with two hadronically decaying $\tau$ leptons and two jets in proton-proton collisions at $ \sqrt{s}=13 $ TeV

MeV-scale seesaw and leptogenesis

Marco Drewes, Valerie Fiona Domcke, Michele Lucente

We study the type-I seesaw model with three right-handed neutrinos and Majorana masses below the pion mass. In this mass range, the model parameter space is not only strongly constrained by the requirement to explain the light neutrino masses, but also by ...

SPRINGER2021

Self-interacting neutrinos: Solution to Hubble tension versus experimental constraints

Emmanuel Stamou

Exotic self-interactions among the Standard Model neutrinos have been proposed as a potential reason behind the tension in the expansion rate, H-0, of the universe inferred from different observations. We constrain this proposal using electroweak precision ...

AMER PHYSICAL SOC2021

An allowed window for heavy neutral leptons below the kaon mass

Alexey Boyarsky, Oleg Ruchayskiy, Inar Timiryasov, Kyrylo Bondarenko, Juraj Klaric

The extension of the Standard Model with two gauge-singlet Majorana fermions can simultaneously explain two beyond-the-Standard-model phenomena: neutrino masses and oscillations, as well as the origin of the matter-antimatter asymmetry in the Universe. The ...

SPRINGER2021

Averages of b-hadron, c-hadron, and tau-lepton properties as of 2018 Heavy Flavor Averaging Group (HFLAV)

Olivier Schneider, Ho Ling Li, Tara Nanut

This paper reports world averages of measurements of b-hadron, c-hadron, and tau-lepton properties obtained by the Heavy Flavour Averaging Group using results available through September 2018. In rare cases, significant results obtained several months late ...

SPRINGER2021

Electric dipole moment constraints on CP-violating heavy-quark Yukawas at next-to-leading order

Emmanuel Stamou

Electric dipole moments are sensitive probes of new phases in the Higgs Yukawa couplings. We calculate the complete two-loop QCD anomalous dimension matrix for the mixing of CP-odd scalar and tensor operators and apply our results for a phenomenological st ...

SPRINGER2021

Two paths towards precision at a very high energy lepton collider

Andrea Wulzer, Roberto Franceschini

We illustrate the potential of a very high energy lepton collider (from 10 to 30 TeV center of mass energy) to explore new physics indirectly in the vector boson fusion double Higgs production process and in direct diboson production at high energy. Double ...

SPRINGER2021

High-energy EFT probes with fully differential Drell-Yan measurements

Andrea Wulzer, Lorenzo Ricci

We study the potential of fully-differential measurements of high-energy dilepton cross-sections at the LHC to probe heavy new physics encapsulated in dimension-6 interaction operators. The assessment is performed in the seven-dimensional parameter space o ...

SPRINGER2021

Measurement of the muon flux from 400 GeV/c protons interacting in a thick molybdenum/tungsten target

Lesya Shchutska, Aurelio Bay, Guido Haefeli, Elena Graverini, Alexey Boyarsky, Federico Leo Redi, Maria Elena Stramaglia, Oleg Ruchayskiy, Nikolaos Charitonidis, Jean-Loup Tastet, Ekaterina Kuznetsova, Hans Dijkstra, Anton Petrov, Sergei Smirnov

The SHiP experiment is proposed to search for very weakly interacting particles beyond the Standard Model which are produced in a 400 GeV/c proton beam dump at the CERN SPS. About 1011muons per spill will be produced in the dump. To design the experiment s ...

2020

Search for B+ -> mu(+)nu(mu) and B+ -> mu N+ with inclusive tagging

Olivier Schneider, Mingkui Wang, Chao Wang, Tagir Aushev, Sun Hee Kim, Donghyun Kim

We report the result for a search for the leptonic decay of B+ -> mu(+)nu mu using the full Belle dataset of 711 fb(-1) of integrated luminosity at the gamma(4S) resonance. In the Standard Model leptonic B-meson decays are helicity and Cabibbo-Kobayashi-Ma ...

AMER PHYSICAL SOC2020

SND@LHC

Aurelio Bay, Guido Haefeli, Elena Graverini, Alexey Boyarsky, Nikolaos Charitonidis, Ekaterina Kuznetsova, Hans Dijkstra, Francesco Cerutti

We propose to build and operate a detector that, for the first time, will measure the process

pp\to\nu X

at the LHC and search for feebly interacting particles (FIPs) in an unexplored domain. The TI18 tunnel has been identified as a suitable site to perf ...

2020

Search for heavy neutrinos or third-generation leptoquarks in final states with two hadronically decaying $\tau$ leptons and two jets in proton-proton collisions at $ \sqrt{s}=13 $ TeV

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MeV-scale seesaw and leptogenesis

Self-interacting neutrinos: Solution to Hubble tension versus experimental constraints

An allowed window for heavy neutral leptons below the kaon mass

Averages of b-hadron, c-hadron, and tau-lepton properties as of 2018 Heavy Flavor Averaging Group (HFLAV)

Electric dipole moment constraints on CP-violating heavy-quark Yukawas at next-to-leading order

Two paths towards precision at a very high energy lepton collider

High-energy EFT probes with fully differential Drell-Yan measurements

Measurement of the muon flux from 400 GeV/c protons interacting in a thick molybdenum/tungsten target

Search for B+ -> mu(+)nu(mu) and B+ -> mu N+ with inclusive tagging

SND@LHC

MeV-scale seesaw and leptogenesis

Self-interacting neutrinos: Solution to Hubble tension versus experimental constraints

An allowed window for heavy neutral leptons below the kaon mass

Averages of b-hadron, c-hadron, and tau-lepton properties as of 2018 Heavy Flavor Averaging Group (HFLAV)

High-energy EFT probes with fully differential Drell-Yan measurements

Search for B+ -> mu(+)nu(mu) and B+ -> mu N+ with inclusive tagging

Two paths towards precision at a very high energy lepton collider

Measurement of the muon flux from 400 GeV/c protons interacting in a thick molybdenum/tungsten target

Electric dipole moment constraints on CP-violating heavy-quark Yukawas at next-to-leading order

SND@LHC