Adriano Doff
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Adriano Doff has a total of 35 co-authors. Here are the top co-authors by number of shared publications:
- Adriano Natale
Centro de Ciências Naturais e Humanas Universidade Federal do ABC Rua Santa Adélia, 166 Santo André 09210-170 SP Brasil
22 shared publications A. A. Natale
Instituto de Física Teórica, UNESP Rua Dr. Bento T. Ferraz, 271, Bloco II, 01140-070, São Paulo – SP, Brazil
8 shared publications- Carlos Antonio De Sousa Pires
Universidade Federal da Paraíba
6 shared publications - Adriano Natale
Instituto de Física Teórica—UNESP, Rua Dr. Bento T. Ferraz, 271, Bloco II, 01140-070, São Paulo, São Paulo, Brazil
5 shared publications - João Paulo Pinheiro
Shanghai Jiao Tong University
3 shared publications P. S. Rodrigues da Silva
Departamento de Física, Universidade Federal da Paraíba, Caixa Postal 5008, 58051-970, João Pessoa, Paraíba, Brazil
3 shared publications
Latest Publications
- Open Access
- 10 August 2026
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2026 (8) , 74
The 3-3-1 model: a natural framework for sub-MeV dark matter
A bstract: We show that the SU(3) C × SU(3) L × U(1) N model with right-handed neutrinos naturally accommodates a viable sub-MeV dark matter (DM) candidate realized as pseudo-Goldstone boson that acquires tiny mass through gravitational effects. The observed relic abundance is obtained via freeze-in in a low-reheating temperature scenario, without requiring tiny couplings while allowing the underlying matter, scalar and gauge sectors to remain at the TeV scale, thereby keeping the model testable at current and future collider experiments.
- 10 August 2026
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2026 (8) , 74
Open AccessThe 3-3-1 model: a natural framework for sub-MeV dark matter
A bstract: We show that the SU(3) C × SU(3) L × U(1) N model with right-handed neutrinos naturally accommodates a viable sub-MeV dark matter (DM) candidate realized as pseudo-Goldstone boson that acquires tiny mass through gravitational effects. The observed relic abundance is obtained via freeze-in in a low-reheating temperature scenario, without requiring tiny couplings while allowing the underlying matter, scalar and gauge sectors to remain at the TeV scale, thereby keeping the model testable at current and future collider experiments.
- Open Access
- 15 June 2026
- Published by American Physical Society (APS) in Physical Review D
- Vol. 113 (11)
Scalar contributions to the S , T , U parameters in a 3-3-1 model
Electroweak precision tests, expressed through the oblique parameters S , T , and U , impose stringent constraints on physics beyond the Standard Model. Gauge extensions of the Standard Model based on the S U ( 3 ) L × U ( 1 ) N symmetry predict a rich scalar and gauge spectrum that contribute to these parameters. Previous studies have shown that 3-3-1 gauge bosons give negligible contributions to the oblique parameters, while the contributions of the scalar sector to these parameters have received comparatively little attention. In particular, for the version of the S U ( 3 ) L × U ( 1 ) N model with right-handed neutrinos, the impact of the scalar sector on S , T , and U has not yet been addressed. In this work, we fill this gap and address systematically the scalar contributions to the S , T , and U within this version. As main result, we show that the parameter T puts stringent constraints on the masses and energy scales associated to the spectrum of scalars of the model.
- 15 June 2026
- Published by American Physical Society (APS) in Physical Review D
- Vol. 113 (11)
Open AccessScalar contributions to the S , T , U parameters in a 3-3-1 model
Electroweak precision tests, expressed through the oblique parameters S , T , and U , impose stringent constraints on physics beyond the Standard Model. Gauge extensions of the Standard Model based on the S U ( 3 ) L × U ( 1 ) N symmetry predict a rich scalar and gauge spectrum that contribute to these parameters. Previous studies have shown that 3-3-1 gauge bosons give negligible contributions to the oblique parameters, while the contributions of the scalar sector to these parameters have received comparatively little attention. In particular, for the version of the S U ( 3 ) L × U ( 1 ) N model with right-handed neutrinos, the impact of the scalar sector on S , T , and U has not yet been addressed. In this work, we fill this gap and address systematically the scalar contributions to the S , T , and U within this version. As main result, we show that the parameter T puts stringent constraints on the masses and energy scales associated to the spectrum of scalars of the model.
- Open Access
Three Decades of FCNC Studies in 3-3-1 Model with Right-Handed Neutrinos: From Z′-Dominance to the Alignment Limit
Flavor-changing neutral current (FCNC) processes play a prominent role in the search for physics beyond the Standard Model (SM) due to their sensitivity to new physics at the TeV scale. Meson–antimeson transitions and rare meson decays provide stringent constraints on new physics through precision measurements of observables such as mass differences, CP asymmetries, and branching ratios. Extensions of the SM based on the gauge group offer a compelling framework for flavor physics, as FCNC processes emerge inexorably at tree level due to the non-universal transformations of the quark families. Among its various realizations, the version incorporating right-handed neutrinos (331RHNs) is the most phenomenologically viable. This review synthesizes three decades of theoretical developments in FCNC phenomenology within the 331RHN model, from early -dominated studies to the recent recognition of the decisive role played by the SM-like Higgs boson and the identification of the alignment limit. We demonstrate that viable parameter space spans orders of magnitude—from a few hundred GeV to ∼100 TeV—depending critically on quark mixing parameterizations and scalar alignment configurations, with significant implications for experimental searches at current and future colliders.Open AccessThree Decades of FCNC Studies in 3-3-1 Model with Right-Handed Neutrinos: From Z′-Dominance to the Alignment Limit
Flavor-changing neutral current (FCNC) processes play a prominent role in the search for physics beyond the Standard Model (SM) due to their sensitivity to new physics at the TeV scale. Meson–antimeson transitions and rare meson decays provide stringent constraints on new physics through precision measurements of observables such as mass differences, CP asymmetries, and branching ratios. Extensions of the SM based on the gauge group offer a compelling framework for flavor physics, as FCNC processes emerge inexorably at tree level due to the non-universal transformations of the quark families. Among its various realizations, the version incorporating right-handed neutrinos (331RHNs) is the most phenomenologically viable. This review synthesizes three decades of theoretical developments in FCNC phenomenology within the 331RHN model, from early -dominated studies to the recent recognition of the decisive role played by the SM-like Higgs boson and the identification of the alignment limit. We demonstrate that viable parameter space spans orders of magnitude—from a few hundred GeV to ∼100 TeV—depending critically on quark mixing parameterizations and scalar alignment configurations, with significant implications for experimental searches at current and future colliders. - 1 November 2025
- Published by IOP Publishing in Physica Scripta
- Vol. 100 (11) , 115933
Magnetic levitation by rotation described by a new type of Levitron
Recently, a novel magnetic levitation phenomenon involving two magnetically equivalent neodymium permanent magnets has been reported. In this work, we propose that this system functions as a scaled-up analog of the Levitron. The key distinction is that the ratio m / μ f becomes a function of the lateral displacement δ R , and magnetic trapping no longer depends on the rotational speed of the levitating body as in a conventional Levitron. Furthermore, we demonstrate that stable trapping occurs when a specific constraint on the δ R parameter is satisfied, ensuring that the potential energy reaches a minimum at the equilibrium point.
- 1 November 2025
- Published by IOP Publishing in Physica Scripta
- Vol. 100 (11) , 115933
Magnetic levitation by rotation described by a new type of Levitron
Recently, a novel magnetic levitation phenomenon involving two magnetically equivalent neodymium permanent magnets has been reported. In this work, we propose that this system functions as a scaled-up analog of the Levitron. The key distinction is that the ratio m / μ f becomes a function of the lateral displacement δ R , and magnetic trapping no longer depends on the rotational speed of the levitating body as in a conventional Levitron. Furthermore, we demonstrate that stable trapping occurs when a specific constraint on the δ R parameter is satisfied, ensuring that the potential energy reaches a minimum at the equilibrium point.
- Open Access
- 8 July 2025
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2025 (7) , 1-21
Meson mixing bounds on Z′ mass in the alignment limit: establishing the phenomenological viability of the 331 model
A bstract: We perform a systematic study of flavor-changing neutral currents (FCNCs) in the 331 model with right-handed neutrinos (331RHNs), analyzing constraints on the Z ′ boson mass from K -, D -, B d -, and B s -meson oscillations. By explicitly incorporating scalar sector dynamics and quark rotation ambiguities $$ \left({V}_L^{u,d}\right) $$ , we demonstrate that Z ′ mass limits depend critically on the parametrization of Cabibbo-Kobayashi-Maskawa (CKM) matrix factors. Three scenarios are explored: (i) $$ {V}_L^u $$ = $$ {V}_{\textrm{CKM}}^{\dagger } $$ (FCNCs restricted to D -mesons), (ii) $$ {V}_L^d $$ = V CKM (dominant B s constraints), and (iii) a hybrid mixing pattern. Strikingly, scenario i) reduces the Z ′ mass bound to $$ {M}_{Z^{\prime }} $$ ≳ 600 GeV — two orders of magnitude below literature values — by leveraging large experimental uncertainties in D - $$ \overline{D} $$ oscillations. Conversely, scenario ii) requires $$ {M}_{Z^{\prime }} $$ ≳ 165 TeV due to stringent B s data. We further establish the alignment limit cos( ϕ + φ ) = 0 for the SM-like Higgs, showing its viability depends on $$ {V}_L^{u,d} $$ configurations, with B s systems enforcing |cos( ϕ + φ )| < 0 . 01 in down-sector FCNC scenarios. Our analysis reveals that strategic choices of quark mixing matrices can suppress FCNC visibility, reconciling the 331 framework with flavor data without ultra-heavy Z ′ bosons. This work provides the first unified treatment of SM-like Higgs- and Z ′ -mediated FCNCs in 331 models, identifying viable parameter spaces for collider phenomenology.- 8 July 2025
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2025 (7) , 1-21
Open AccessMeson mixing bounds on Z′ mass in the alignment limit: establishing the phenomenological viability of the 331 model
A bstract: We perform a systematic study of flavor-changing neutral currents (FCNCs) in the 331 model with right-handed neutrinos (331RHNs), analyzing constraints on the Z ′ boson mass from K -, D -, B d -, and B s -meson oscillations. By explicitly incorporating scalar sector dynamics and quark rotation ambiguities $$ \left({V}_L^{u,d}\right) $$ , we demonstrate that Z ′ mass limits depend critically on the parametrization of Cabibbo-Kobayashi-Maskawa (CKM) matrix factors. Three scenarios are explored: (i) $$ {V}_L^u $$ = $$ {V}_{\textrm{CKM}}^{\dagger } $$ (FCNCs restricted to D -mesons), (ii) $$ {V}_L^d $$ = V CKM (dominant B s constraints), and (iii) a hybrid mixing pattern. Strikingly, scenario i) reduces the Z ′ mass bound to $$ {M}_{Z^{\prime }} $$ ≳ 600 GeV — two orders of magnitude below literature values — by leveraging large experimental uncertainties in D - $$ \overline{D} $$ oscillations. Conversely, scenario ii) requires $$ {M}_{Z^{\prime }} $$ ≳ 165 TeV due to stringent B s data. We further establish the alignment limit cos( ϕ + φ ) = 0 for the SM-like Higgs, showing its viability depends on $$ {V}_L^{u,d} $$ configurations, with B s systems enforcing |cos( ϕ + φ )| < 0 . 01 in down-sector FCNC scenarios. Our analysis reveals that strategic choices of quark mixing matrices can suppress FCNC visibility, reconciling the 331 framework with flavor data without ultra-heavy Z ′ bosons. This work provides the first unified treatment of SM-like Higgs- and Z ′ -mediated FCNCs in 331 models, identifying viable parameter spaces for collider phenomenology. - Open Access
- 4 July 2025
- Published by Springer Nature in The European Physical Journal C
- Vol. 85 (7) , 1-14
Exploring solutions to the muon g-2 anomaly in a 3-3-1 model under flavor constraints
The magnetic moment of the muon can receive significant two-loop contributions from a light pseudoscalar. Notably, the spectrum of scalars of 3-3-1 models includes one pseudoscalar. However, this scalar spectrum inevitably gives rise to flavor-changing neutral current (FCNC) processes. In this study, we examine, within the 3-3-1 model with right-handed neutrinos, whether such spectrum of scalars can account for the anomalous magnetic moment of the muon, considering the constraints imposed by B-meson decays, meson mixing, and invisible Higgs decays. Our principal finding reveals that a pseudoscalar with mass around 66 GeV and $$\tan \beta =58$$ can account for the $$g-2$$ anomaly without conflicting with flavor physics.- 4 July 2025
- Published by Springer Nature in The European Physical Journal C
- Vol. 85 (7) , 1-14
Open AccessExploring solutions to the muon g-2 anomaly in a 3-3-1 model under flavor constraints
The magnetic moment of the muon can receive significant two-loop contributions from a light pseudoscalar. Notably, the spectrum of scalars of 3-3-1 models includes one pseudoscalar. However, this scalar spectrum inevitably gives rise to flavor-changing neutral current (FCNC) processes. In this study, we examine, within the 3-3-1 model with right-handed neutrinos, whether such spectrum of scalars can account for the anomalous magnetic moment of the muon, considering the constraints imposed by B-meson decays, meson mixing, and invisible Higgs decays. Our principal finding reveals that a pseudoscalar with mass around 66 GeV and $$\tan \beta =58$$ can account for the $$g-2$$ anomaly without conflicting with flavor physics. - Open Access
- 21 May 2024
- Published by Elsevier in Physics Letters B
- Vol. 854
Introducing scalar leptoquarks into a 3-3-1 model to solve the (g−2) puzzle
- 21 May 2024
- Published by Elsevier in Physics Letters B
- Vol. 854
Open AccessIntroducing scalar leptoquarks into a 3-3-1 model to solve the (g−2) puzzle
- Open AccessIntroducing scalar leptoquarks into a 3-3-1 model to solve the $(g-2)_μ$ puzzleIn this work we introduce scalar leptoquarks into the 3-3-1 model with right-handed neutrinos with the aim of solving the $(g-2)_μ$ puzzle. We show that besides the model supports leptoquarks in the octet, sextet, triplet and singlet representations, we identified that only one specif leptoquark in the singlet representation leads to flip of chirality as required to generate positive and robust contribution to the $(g-2)_μ$. Then we calculate its contributions to $(g-2)_μ$ and to the decay process $μ\rightarrow e γ$ and discuss the results.Open AccessIntroducing scalar leptoquarks into a 3-3-1 model to solve the $(g-2)_μ$ puzzleIn this work we introduce scalar leptoquarks into the 3-3-1 model with right-handed neutrinos with the aim of solving the $(g-2)_μ$ puzzle. We show that besides the model supports leptoquarks in the octet, sextet, triplet and singlet representations, we identified that only one specif leptoquark in the singlet representation leads to flip of chirality as required to generate positive and robust contribution to the $(g-2)_μ$. Then we calculate its contributions to $(g-2)_μ$ and to the decay process $μ\rightarrow e γ$ and discuss the results.
- Open Access
- 13 September 2023
- Published by Elsevier in Physics Letters B
- Vol. 846
Composite scalar bosons masses: Effective potential versus Bethe-Salpeter approach
- 13 September 2023
- Published by Elsevier in Physics Letters B
- Vol. 846
Open AccessComposite scalar bosons masses: Effective potential versus Bethe-Salpeter approach
- Open Access
Composite scalar bosons masses: Effective potential versus Bethe-Salpeter approach
Ten years ago the $125$ GeV Higgs resonance was discovered at the LHC[1,2], if this boson is a fundamental particle or a particle composed of new strongly interacting particles is still an open question. If this is a composite boson there are still no signals of other possible composite states of this scheme, a possible solution to this problem was recently discussed in Refs.[30,31], where it is argued that the Higgs boson can be a composite dilaton [30]. In this work, considering an effective potential for composite operators we verify that the potential responsible for a light composite scalar boson of $O(120)GeV$, behaves like $\propto Φ^4$ suggesting that if the Higgs boson is a composite scalar it may be a composite dilaton.Open AccessComposite scalar bosons masses: Effective potential versus Bethe-Salpeter approach
Ten years ago the $125$ GeV Higgs resonance was discovered at the LHC[1,2], if this boson is a fundamental particle or a particle composed of new strongly interacting particles is still an open question. If this is a composite boson there are still no signals of other possible composite states of this scheme, a possible solution to this problem was recently discussed in Refs.[30,31], where it is argued that the Higgs boson can be a composite dilaton [30]. In this work, considering an effective potential for composite operators we verify that the potential responsible for a light composite scalar boson of $O(120)GeV$, behaves like $\propto Φ^4$ suggesting that if the Higgs boson is a composite scalar it may be a composite dilaton.