Pietro Slavich
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Research Interests
Pietro Slavich has a total of 73 co-authors. Here are the top co-authors by number of shared publications:
- Giuseppe Degrassi
Dipartimento di Matematica e Fisica INFN Università di Roma Tre Sezione di Roma Tre Rome Italy
21 shared publications - Emanuele Bagnaschi
INFN, Laboratori Nazionali di Frascati
11 shared publications - Mark D. Goodsell
UMR 7589, Sorbonne Université et CNRS
9 shared publications - Stefano Di Vita
INFN Sezione di Milano via Celoria 16 20133 Milano Italy
6 shared publications - Ramona Gröber
Università degli Studi di Padova
5 shared publications - Alessandro Vicini
Dipartimento di Fisica “Aldo Pontremoli”, University of Milano and INFN, Sezione di Milano
4 shared publications
Latest Publications
- Open Access
Revisiting the Higgs-mass calculation in the scale-invariant THDM
We revisit the one-loop calculation of the Higgs mass spectrum of the scale-invariant THDM, relying on a direct calculation of the relevant Feynman diagrams. We highlight a number of incorrect assumptions in earlier calculations that relied on the effective-potential approach. In contrast with the earlier findings, we show that the one-loop corrections can have an effect of ${\cal O}(10\%)$ on the predictions for the BSM-Higgs masses, and they can also induce non-negligible mixing between the SM-like and BSM states in the neutral-scalar sector.Open AccessRevisiting the Higgs-mass calculation in the scale-invariant THDM
We revisit the one-loop calculation of the Higgs mass spectrum of the scale-invariant THDM, relying on a direct calculation of the relevant Feynman diagrams. We highlight a number of incorrect assumptions in earlier calculations that relied on the effective-potential approach. In contrast with the earlier findings, we show that the one-loop corrections can have an effect of ${\cal O}(10\%)$ on the predictions for the BSM-Higgs masses, and they can also induce non-negligible mixing between the SM-like and BSM states in the neutral-scalar sector. - Open Access
- 7 January 2026
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2026 (1) , 41
Two-loop BSM contributions to Higgs pair production in the aligned THDM
A bstract: We study the impact of the two-loop corrections controlled by the BSM Higgs couplings on the cross section for the production of a pair of SM-like Higgs bosons via gluon fusion in the aligned THDM. To this aim, we reassess the two-loop calculation of λ hhh , we compute for the first time the two-loop corrections to λ hhH , and we include the relevant corrections to the Higgs-gluon couplings and to the s -channel propagators entering the gg → hh amplitude. We discuss the numerical impact of the two-loop BSM contributions, first on the individual couplings and then on the prediction for the pair-production cross section, in two benchmark scenarios for the aligned THDM.
- 7 January 2026
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2026 (1) , 41
Open AccessTwo-loop BSM contributions to Higgs pair production in the aligned THDM
A bstract: We study the impact of the two-loop corrections controlled by the BSM Higgs couplings on the cross section for the production of a pair of SM-like Higgs bosons via gluon fusion in the aligned THDM. To this aim, we reassess the two-loop calculation of λ hhh , we compute for the first time the two-loop corrections to λ hhH , and we include the relevant corrections to the Higgs-gluon couplings and to the s -channel propagators entering the gg → hh amplitude. We discuss the numerical impact of the two-loop BSM contributions, first on the individual couplings and then on the prediction for the pair-production cross section, in two benchmark scenarios for the aligned THDM.
- Open Access
- 22 January 2025
- Published by Springer Nature in The European Physical Journal C
- Vol. 85 (1) , 1-16
On the two-loop BSM corrections to $h\longrightarrow \gamma \gamma $ in a triplet extension of the SMWe compute the two-loop BSM contributions to the $$h\longrightarrow \gamma \gamma $$ decay width in the SM extended with a real triplet of SU(2). We consider scenarios in which the neutral components of doublet and triplet do not mix, so that the lighter neutral scalar h has (at least approximately) SM-like couplings to fermions and gauge bosons. We focus on the two-loop corrections controlled by the quartic scalar couplings, and obtain explicit and compact formulas for the $$h \gamma \gamma $$ amplitude by means of a low-energy theorem that connects it to the derivative of the photon self-energy w.r.t. the Higgs field. We briefly discuss the numerical impact of the newly-computed contributions, showing that they may be required for a precise determination of $$\Gamma [h\rightarrow \gamma \gamma ]$$ in scenarios where the quartic scalar couplings are large.- 22 January 2025
- Published by Springer Nature in The European Physical Journal C
- Vol. 85 (1) , 1-16
Open AccessOn the two-loop BSM corrections to $h\longrightarrow \gamma \gamma $ in a triplet extension of the SMWe compute the two-loop BSM contributions to the $$h\longrightarrow \gamma \gamma $$ decay width in the SM extended with a real triplet of SU(2). We consider scenarios in which the neutral components of doublet and triplet do not mix, so that the lighter neutral scalar h has (at least approximately) SM-like couplings to fermions and gauge bosons. We focus on the two-loop corrections controlled by the quartic scalar couplings, and obtain explicit and compact formulas for the $$h \gamma \gamma $$ amplitude by means of a low-energy theorem that connects it to the derivative of the photon self-energy w.r.t. the Higgs field. We briefly discuss the numerical impact of the newly-computed contributions, showing that they may be required for a precise determination of $$\Gamma [h\rightarrow \gamma \gamma ]$$ in scenarios where the quartic scalar couplings are large. - Open Access
- 18 October 2023
- Published by Springer Nature in The European Physical Journal C
- Vol. 83 (10) , 1-14
On the two-loop BSM corrections to $h\longrightarrow \gamma \gamma $ in the aligned THDMWe compute the two-loop BSM contributions to the $$h\longrightarrow \gamma \gamma $$ decay width in the aligned THDM. We adopt the simplifying assumptions of vanishing EW gauge couplings and vanishing mass of the SM-like Higgs boson, which allow us to exploit a low-energy theorem connecting the $$h\gamma \gamma $$ amplitude to the derivative of the photon self-energy w.r.t. the Higgs field. We briefly discuss the numerical impact of the newly-computed contributions, showing that they may be required for a precise determination of $$\Gamma [h\rightarrow \gamma \gamma ]$$ in scenarios where the quartic Higgs couplings are large.- 18 October 2023
- Published by Springer Nature in The European Physical Journal C
- Vol. 83 (10) , 1-14
Open AccessOn the two-loop BSM corrections to $h\longrightarrow \gamma \gamma $ in the aligned THDMWe compute the two-loop BSM contributions to the $$h\longrightarrow \gamma \gamma $$ decay width in the aligned THDM. We adopt the simplifying assumptions of vanishing EW gauge couplings and vanishing mass of the SM-like Higgs boson, which allow us to exploit a low-energy theorem connecting the $$h\gamma \gamma $$ amplitude to the derivative of the photon self-energy w.r.t. the Higgs field. We briefly discuss the numerical impact of the newly-computed contributions, showing that they may be required for a precise determination of $$\Gamma [h\rightarrow \gamma \gamma ]$$ in scenarios where the quartic Higgs couplings are large. - Open AccessOn the two-loop BSM corrections to $h\longrightarrowγγ$ in the aligned THDMWe compute the two-loop BSM contributions to the $h\longrightarrow γγ$ decay width in the aligned THDM. We adopt the simplifying assumptions of vanishing EW gauge couplings and vanishing mass of the SM-like Higgs boson, which allow us to exploit a low-energy theorem connecting the $hγγ$ amplitude to the derivative of the photon self-energy w.r.t. the Higgs field. We briefly discuss the numerical impact of the newly-computed contributions, showing that they may be required for a precise determination of $Γ[h\rightarrow γγ]$ in scenarios where the quartic Higgs couplings are large.Open AccessOn the two-loop BSM corrections to $h\longrightarrowγγ$ in the aligned THDMWe compute the two-loop BSM contributions to the $h\longrightarrow γγ$ decay width in the aligned THDM. We adopt the simplifying assumptions of vanishing EW gauge couplings and vanishing mass of the SM-like Higgs boson, which allow us to exploit a low-energy theorem connecting the $hγγ$ amplitude to the derivative of the photon self-energy w.r.t. the Higgs field. We briefly discuss the numerical impact of the newly-computed contributions, showing that they may be required for a precise determination of $Γ[h\rightarrow γγ]$ in scenarios where the quartic Higgs couplings are large.
- Open Access
- 19 January 2023
- Published by Springer Nature in The European Physical Journal C
- Vol. 83 (1) , 1-20
W boson mass in minimal Dirac gaugino scenarios
We investigate the conditions for alignment in Dirac Gaugino models with minimal matter content. This leads to several scenarios, including an aligned Dirac Gaugino NMSSM that allows a light singlet scalar. We then investigate the compatibility of minimal Dirac Gaugino models with an enhanced W boson mass, using a new precise computation of the quantum corrections included in the code SARAH 4.15.0.
- 19 January 2023
- Published by Springer Nature in The European Physical Journal C
- Vol. 83 (1) , 1-20
Open AccessW boson mass in minimal Dirac gaugino scenarios
We investigate the conditions for alignment in Dirac Gaugino models with minimal matter content. This leads to several scenarios, including an aligned Dirac Gaugino NMSSM that allows a light singlet scalar. We then investigate the compatibility of minimal Dirac Gaugino models with an enhanced W boson mass, using a new precise computation of the quantum corrections included in the code SARAH 4.15.0.
- Open Access
Higgs-mass prediction in the NMSSM with heavy BSM particles
We address the prediction for the mass of the SM-like Higgs boson in NMSSM scenarios where all BSM particles, including the singlets, have masses at the TeV scale. We provide a full one-loop computation of the matching condition for the quartic Higgs coupling in the NMSSM, supplemented with the two-loop contributions that involve the strong gauge coupling. We discuss the impact of the one- and two-loop corrections that are specific to the NMSSM on the prediction for the Higgs mass, and propose a method to estimate of the uncertainty associated with the uncomputed higher-order terms. Finally, we illustrate how the measured value of the Higgs mass can be used to constrain some yet-unmeasured parameters of the NMSSM.
Open AccessHiggs-mass prediction in the NMSSM with heavy BSM particles
We address the prediction for the mass of the SM-like Higgs boson in NMSSM scenarios where all BSM particles, including the singlets, have masses at the TeV scale. We provide a full one-loop computation of the matching condition for the quartic Higgs coupling in the NMSSM, supplemented with the two-loop contributions that involve the strong gauge coupling. We discuss the impact of the one- and two-loop corrections that are specific to the NMSSM on the prediction for the Higgs mass, and propose a method to estimate of the uncertainty associated with the uncomputed higher-order terms. Finally, we illustrate how the measured value of the Higgs mass can be used to constrain some yet-unmeasured parameters of the NMSSM.
- Open Access
- 1 October 2022
- Published by Springer Nature in The European Physical Journal C
- Vol. 82 (10) , 1-14
Higgs-mass prediction in the NMSSM with heavy BSM particles
We address the prediction for the mass of the SM-like Higgs boson in NMSSM scenarios where all BSM particles, including the singlets, have masses at the TeV scale. We provide a full one-loop computation of the matching condition for the quartic Higgs coupling in the NMSSM, supplemented with the two-loop contributions that involve the strong gauge coupling. We discuss the impact of the one- and two-loop corrections that are specific to the NMSSM on the prediction for the Higgs mass, and propose a method to estimate of the uncertainty associated with the uncomputed higher-order terms. Finally, we illustrate how the measured value of the Higgs mass can be used to constrain some yet-unmeasured parameters of the NMSSM.
- 1 October 2022
- Published by Springer Nature in The European Physical Journal C
- Vol. 82 (10) , 1-14
Open AccessHiggs-mass prediction in the NMSSM with heavy BSM particles
We address the prediction for the mass of the SM-like Higgs boson in NMSSM scenarios where all BSM particles, including the singlets, have masses at the TeV scale. We provide a full one-loop computation of the matching condition for the quartic Higgs coupling in the NMSSM, supplemented with the two-loop contributions that involve the strong gauge coupling. We discuss the impact of the one- and two-loop corrections that are specific to the NMSSM on the prediction for the Higgs mass, and propose a method to estimate of the uncertainty associated with the uncomputed higher-order terms. Finally, we illustrate how the measured value of the Higgs mass can be used to constrain some yet-unmeasured parameters of the NMSSM.
- Open Access
- 29 January 2022
- Published by Springer Nature in The European Physical Journal C
- Vol. 82 (1) , 1-15
Higgs-mass constraints on a supersymmetric solution of the muon $g-2$ anomalyThe prediction for the quartic coupling of the SM-like Higgs boson constrains the parameter space of SUSY models, even in scenarios where all of the new-particle masses are above the scale probed so far by the LHC. We study the implications of the Higgs-mass prediction on a recently-proposed SUSY model that features two pairs of Higgs doublets, and provides a solution to the $$(g-2)_\mu $$ anomaly thanks to a suitable enhancement of the muon Yukawa coupling.- 29 January 2022
- Published by Springer Nature in The European Physical Journal C
- Vol. 82 (1) , 1-15
Open AccessHiggs-mass constraints on a supersymmetric solution of the muon $g-2$ anomalyThe prediction for the quartic coupling of the SM-like Higgs boson constrains the parameter space of SUSY models, even in scenarios where all of the new-particle masses are above the scale probed so far by the LHC. We study the implications of the Higgs-mass prediction on a recently-proposed SUSY model that features two pairs of Higgs doublets, and provides a solution to the $$(g-2)_\mu $$ anomaly thanks to a suitable enhancement of the muon Yukawa coupling. - Open Access
Higgs-mass constraints on a supersymmetric solution of the muon g-2 anomaly
The prediction for the quartic coupling of the SM-like Higgs boson constrains the parameter space of SUSY models, even in scenarios where all of the new-particle masses are above the scale probed so far by the LHC. We study the implications of the Higgs-mass prediction on a recently-proposed SUSY model that features two pairs of Higgs doublets, and provides a solution to the g-2 anomaly thanks to a suitable enhancement of the muon Yukawa coupling.
Open AccessHiggs-mass constraints on a supersymmetric solution of the muon g-2 anomaly
The prediction for the quartic coupling of the SM-like Higgs boson constrains the parameter space of SUSY models, even in scenarios where all of the new-particle masses are above the scale probed so far by the LHC. We study the implications of the Higgs-mass prediction on a recently-proposed SUSY model that features two pairs of Higgs doublets, and provides a solution to the g-2 anomaly thanks to a suitable enhancement of the muon Yukawa coupling.