102 citations · 595 across the 26 of their papers we have counts for
26 papers · 1 filter
BSM Matter providing Neutrino Masses and Gauge Unification
Ivica Picek
I present several scenarios developed in Zagreb, in which TeV-scale particles belonging to non-trivial weak-isospin multiplets give rise to neutrino-mass mechanisms different from…
Renormalizable SU(5) Completions of a Zee-type Neutrino Mass Model
Kresimir Kumericki, Timon Mede, Ivica Picek
We explore the potential of a selected model of radiative neutrino masses to be implemented in a renormalizable SU(5) unification framework. The Zee-type model under consideration…
Extended Higgs Sectors in Radiative Neutrino Models
Oleg Antipin, Petar Culjak, Kresimir Kumericki +1
Testable Higgs partners may be sought within the extensions of the SM Higgs sector aimed at generating neutrino masses at the loop level. We study a viability of extended Higgs sec…
Radiative neutrino models in light of diphoton signals
Oleg Antipin, Petar Culjak, Kresimir Kumericki +1
Viable explanations of a hinted 750 GeV scalar resonance may be sought within the extensions of the SM Higgs sector aimed at generating neutrino masses at the loop level. We confro…
A Critical Analysis of One-Loop Neutrino Mass Models with Minimal Dark Matter
Amine Ahriche, Kristian L. McDonald, Salah Nasri +1
A recent paper investigated minimal RMDM models with the type T1-iii and T3 one-loop topologies. However, the candidate most-minimal model does not possess an accidental symmetr…
Scotogenic R\nuMDM at Three-Loop Level
Petar Culjak, Kresimir Kumericki, Ivica Picek
We propose a model in which the radiative neutrino (Rν) masses are induced by fermion quintuplet and scalar septuplet fields from the minimal-dark-matter (MDM) setup. In conjunctio…
Radiative Neutrino Mass with Scotogenic Scalar Triplet
Vedran Brdar, Ivica Picek, Branimir Radovcic
We present radiative one-loop neutrino mass model with hypercharge zero scalar triplet in conjunction with another charged singlet scalar and an additional vectorlike lepton double…
New Scotogenic Model of Neutrino Mass with Gauge Interaction
Ernest Ma, Ivica Picek, Branimir Radovcic
We propose a new realization of the one-loop radiative model of neutrino mass generated by dark matter (scotogenic), where the particles in the loop have an additional gau…
Neutrino Masses and TeV-scale Particles Testable at the LHC
Kresimir Kumericki, Ivica Picek, Branimir Radovcic
We consider a scenario in which TeV-scale particles belonging to weak-isospin multiplets higher than triplets lead to novel seesaw mechanisms different from conventional type I, II…
Enhancement of by seesaw-motivated exotic scalars
Ivica Picek, Branimir Radovcic
We examine the role of seesaw motivated exotic scalars in loop-mediated Higgs decays. We consider a simple TeV-scale seesaw model built upon the fermionic quintuplet mediator in co…
TeV-scale Seesaw with Quintuplet Fermions
Kresimir Kumericki, Ivica Picek, Branimir Radovcic
We propose a new seesaw model based on fermionic hypercharge zero weak quintuplet in conjunction with additional scalar quadruplet which attains an induced vev. The model provides…
Critique of Fermionic R\nuMDM and its Scalar Variants
Kresimir Kumericki, Ivica Picek, Branimir Radovcic
We examine the stability of minimal dark matter (MDM) particle-candidates in the setup in which they participate in radiative neutrino (Rν) masses. We first point out the existence…
Exotic Seesaw-Motivated Heavy Leptons at the LHC
Kresimir Kumericki, Ivica Picek, Branimir Radovcic
We study the LHC potential for discovering TeV-scale SU(2)_L 5-plet fermions introduced recently to explain small neutrino masses. We show that the Drell-Yan production and the dec…
Testing New TeV-scale Seesaw Mediators at the LHC
Ivica Picek, Branimir Radovcic
We propose TeV-scale Dirac fermions producing Majorana masses of the known neutrinos via tree-level seesaw, different from standard type I and III seesaw. The employed weak five-pl…
Role of Higher Fermion Representations in TeV-scale Seesaw
Ivica Picek, Branimir Radovcic
We consider a scenario in which additional vectorlike TeV-scale fermions belonging to higher weak-isospin multiplets provide new seesaw mediators. If these fermions have non-zero h…
Novel TeV-scale seesaw mechanism with Dirac mediators
Ivica Picek, Branimir Radovcic
We propose novel tree level seesaw mechanism with TeV-scale vectorlike Dirac mediators that produce Majorana masses of the known neutrinos. The gauge quantum number assignment to t…
Nondecoupling of a terascale isosinglet quark and rare K and B decays
Ivica Picek, Branimir Radovcic
We examine recent extensions of the standard model with an up-type vectorlike isosinglet T quark that mixes dominantly with the top quark. We take under scrutiny the nondecoupling…
New Dipole Penguin Contribution to K --> pi pi decays
Jan O. Eeg, Kresimir Kumericki, Ivica Picek
We point out that the standard chromomagnetic penguin dipole operator has a counterpart corresponding to off-shell momenta for external quarks. By employing the chiral quark model,…
Soft gluon contributions to the B --> K eta' amplitude in a low energy bosonization model
J. O. Eeg, K. Kumericki, I. Picek
Intriguing B --> K eta' decays provide a unique opportunity to study a joining of two-gluon configurations arising from the penguin b --> sG and b --> sGG transitions, with those i…
On the Short Distance Part of the QCD Anomaly Contribution to the b --> s eta' Amplitude
J. O. Eeg, K. Kumericki, I. Picek
In addressing the B --> eta' K puzzle, there has been a considerable hope in the literature to resolve it by the QCD anomaly contribution to the b --> s eta' amplitude. This contri…
Bound-state effects in μ^+ e^- \to γγand \bar{B}^{0}_s \to γγdecays
J. O. Eeg, K. Kumericki, I. Picek
We demonstrate that in the double-radiative decays of heavy-light QED and QCD atoms, μ^{+} e^{-} \to γγand \bar{B}^{0}_{s} \to γγ, there is a contribution coming from operators tha…
Nucleon strangeness as the response to a strangeness-sensitive probe in a class of hadron models
D. Klabucar, K. Kumericki, B. Melic +1
On top of its valence quarks, the full nucleon ground state may contain appreciable admixture of s-\bar{s} pairs already at small momentum transfers. This paper discusses strangene…
Long vs. short distance dispersive two-photon K_L \to μ^+ μ^- amplitude
J. O. Eeg, K. Kumericki, I. Picek
We report on the calculation of the two-loop electroweak, two-photon mediated short-distance dispersive K_L \to μ^+μ^- decay amplitude. QCD corrections change the sign of this cont…
On the dispersive two-photon K_L -> μ^+ μ^- amplitude
J. O. Eeg, K. Kumericki, I. Picek
We present a full account of the two-loop electroweak, two-photon mediated short-distance dispersive decay amplitude. QCD corrections change the sign of this amplit…