Rui Santos

Publications Publicações

Books and Chapters Livros e Capítulos

• Searches for Higgs bosons in two-Higgs doublet models: the fermiophobic limit L. Brücher and R. Santos, Invited chapter in SEARCH FOR THE HIGGS BOSON, edited by John V. Lee, Nova Science Publishers, 2006

Reports Relatórios

• Beyond the Standard Model in Vector Boson Scattering Signatures M. Gallinaro et al, e-Print: 2005.09889 [hep-ph] (2020)
• ScannerS: Parameter Scans in Extended Scalar Sectors M. Mühlleitner, M. Sampaio, R. Santos, J. Wittbrodt, e-Print: 2007.02985 [hep-ph] (2020)
• The CLIC Potential for New Physics J. de Blas et al., CERN Yellow Rep. Monogr. Vol. 3 (2018)
• Handbook of LHC Higgs Cross Sections: 4. Deciphering the Nature of the Higgs Sector Handbook of LHC Higgs Cross Sections: 4. Deciphering the Nature of the Higgs Sector  LHC Higgs Cross Section Working Group (D. de Florian (ICAS, UNSAM, Buenos Aires) et al.)

Papers Artigos

• Deep Learning Searches for Vector-Like Leptons at the LHC and Electron/Muon Colliders A. P. Morais, A. Onofre, F. F. Freitas, J. Gonçalves, R. Pasechnik, R. Santos, e-Print: 2108.03926 [hep-ph] Eur.Phys.J.C 83 3 (2023), 232
• Electroweak Corrections to Higgs Boson Decays in a Complex Singlet Extension of the SM and their Phenomenological Impact F. Egle, M. Mühlleitner, R. Santos, J. Viana, e-Print: 2306.04127 [hep-ph] JHEP 11 116 (2023)
• Search for an invisible scalar in tt ̄ final states at the LHC D. Azevedo, R. Capucha, P. Chaves, J. Bravo Martins, A. Onofre, R. Santos, e-Print: 2308.00819 [hep-ph] JHEP 11 125 (2023)
• Benchmarking di-Higgs production in various extended Higgs sector models H. Abouabid, A. Arhrib, D. Azevedo, J. El Falaki, P.M. Ferreira, M. Mühlleitner, R. Santos, e-Print: 2112.12515 [hep-ph] JHEP 09 (2022) 0110
• CP-violation, asymmetries and interferences in ttφ D. Azevedo, R. Capucha, A. Onofre, R. Santos, e-Print: 2208.04271 [hep-ph] JHEP 09 (2022) 246
• Direct detection of pseudo-Nambu-Goldstone dark matter in a two Higgs doublet plus singlet extension of the SM T. Biekötter, P. Gabriel, M. Olea-Romacho, R. Santos, e-Print: 2207.04973 [hep-ph] JHEP 10 126 (2022) 095032
• Electroweak corrections to dark matter direct detection in the dark singlet phase of the N2HDM S. Glaus, M. Mühlleitner, J. Müller, S. Patel, R. Santos, e-Print: 2204.13145 [hep-ph] Phys. Lett. B 833 (2022) 137342
• Impact of electroweak group representation in models for B and g-2 anomalies from dark loops R. Capucha, D. Huang, T. Lopes, R. Santos, e-Print: 2207.11556 [hep-ph] Phys. Rev. D 106 (2022) 095032
• Impact of SM parameters and of the vacua of the Higgs potential in gravitational waves detection F. F. Freitas, G. Lourenço, A.P. Morais, A. Nunes, J. Olívia, R. Pasechnik, R. Santos, J. Viana, e-Print: 2108.12810 [hep-ph] JCAP 03 (2022) 046
• One-loop corrections to the Higgs boson invisible decay in a complex singlet extension of the SM F. Egle, M. Mühlleitner, R. Santos, J. Viana, e-Print: 2202.04035 [hep-ph] Phys. Rev. D 106 (2022) 095030
• P-even, CP-violating signals in scalar-mediated processes H. E. Haber, V. Keus, R. Santos, e-Print: 2206.09643 [hep-ph] Phys.Rev.D 106 9 (2022) 095038
• ScannerS: Parameter Scans in Extended Scalar Sectors M. Mühlleitner, M.O.P. Sampaio, R. Santos, J. Wittbrodt, e-Print: 2007.02985 [hep-ph] Eur. Phys. J. C 12 (2022) 82:198
• CP Violating hW^+W^- Coupling in the Standard Model and Beyond D. Huang, A. Morais, R. Santos, JHEP01(2021)168
• Light Higgs searches in ttϕ production at the LHC D. Azevedo, R. Capucha, E. Gouveia, A. Onofre, R. Santos, JHEP 04 (2021) 077 • e-Print: 2012.10730 [hep-ph]
• One-loop corrections to the Higgs boson invisible decay in the dark doublet phase of the N2HDM D. Azevedo, P. Gabriel, M. Muhlleitner, K. Sakurai, R. Santos, JHEP 10 (2021) 044 • e-Print: 2104.03184 [hep-ph]
• Ultralight bosons for strong gravity applications from simple Standard Model extensions F. F. Freitas, C. A.R. Herdeiro, A. P. Morais, A. Onofre, E. Radu, R. Pasechnik, N. Sanchis-Gual, R. Santos, JCAP 12 (2021) 12, 047 • e-Print: 2107.09493 [hep-ph]
• Vacuum structure of the Z2 symmetric Georgi-Machacek model D. Azevedo, P. Ferreira, H. E. Logan, R. Santos, JHEP 03 (2021) 221, e-Print: 2012.07758 [hep-ph]
• Anomalies in B-meson decays and the muon g−2 from dark loops D. Huang, A. Morais, R. Santos, Phys.Rev.D 102 (2020) 7, 075009
• Electroweak Corrections in a Pseudo-Nambu Goldstone Dark Matter Model Revisited S. Glaus, M. Mühlleitner, J. Müller, S. Patel, T. Römer, R. Santos, JHEP 12 (2020) 034
• Scalar mass dependence of angular variables in ttϕ production D. Azevedo, R. Capucha, A. Onofre, R. Santos, JHEP 06 (2020) 155
• Signal versus background interference in H+  →tb signals for MSSM benchmark scenarios A. Arhrib, D. Azevedo, R. Benbrik, H. Harouiz, S. Moretti, R. Patrick, R. Santos, JHEP 10 (2020) 209
• The Dark Phases of the N2HDM I. Engeln, P. Ferreira, M. Mühlleitner, R. Santos, J. Wittbrodt, JHEP 08 (2020) 085
• Electroweak Corrections to Dark Matter Direct Detection in a Vector Dark Matter Model S. Glaus, M. Mühlleitner, J. Müller, S. Patel, R. Santos, JHEP 1910 (2019) 152
• LHC Dark Matter Working Group: Next-generation spin-0 dark matter models T. Abe et al, Physics of the Dark Universe  (2019) 100351
• Models with extended Higgs sectors at future 𝑒+𝑒− colliders D. Azevedo, P. Ferreira, M. Mühlleitner, R. Santos, J. Wittbrodt, Phys.Rev. D99 (2019) no.5, 055013
• One-loop contribution to dark-matter-nucleon scattering in the pseudo-scalar dark matter model D. Azevedo, M. Duch, B. Grzadkowski, Da Huang, M. Iglicki, R. Santos, JHEP 1901 (2019) 138
• Pseudoscalar decays to gauge bosons at the LHC and at a future 100 TeV collider A. Arhrib, R. Benbrik, J. El Falaki, M. Sampaio, R. Santos, Phys.Rev. D99 (2019) no.3, 035043
• Testing scalar versus vector dark matter D. Azevedo, M. Duch, B. Grzadkowski, Da Huang, M. Iglicki, R. Santos, Phys.Rev. D99 (2019) no.1, 015017
• Vacuum Instabilities in the N2HDM P.M. Ferreira, M. Mühlleitner, R. Santos, G. Weiglein, J. Wittbrodt (DESY), JHEP 1909 (2019) 006
• CP in the dark D. Azevedo, P. M. Ferreira, M. Muhlleitner, S. Patel, R. Santos, J. Wittbrodt, JHEP 1811 (2018) 091
• High scale impact in alignment and decoupling in two-Higgs doublet models P. Basler, P.M. Ferreira, M. Mühlleitner, R. Santos, Phys.Rev. D97 (2018) no.9, 095024
• Signal to background interference in pp→tH→tWbb at the LHC Run-II A. Arhrib, R. Benbrik, S. Moretti, R. Santos, P. Sharma, Phys.Rev. D97 (2018) no.7, 075037
• The C2HDM revisited D. Fontes, M. Mühlleitner, J.C. Romão, R. Santos, J.P. Silva, J. Wittbrodt, JHEP 1802 (2018) 073
• Gauge-independent Renormalization of the N2HDM M. Krause, D. Lopez-Val, M. Muhlleitner, R. Santos, JHEP 1712 (2017) 077
• Higgs-to-Higgs boson decays in a 2HDM at next-to-leading order M. Krause, M. Muhlleitner, R. Santos, H. Ziesche, Phys. Rev. D95 (2017) no.7, 075019
• NLO electroweak corrections in general scalar singlet models R. Costa, M.O.P. Sampaio, R. Santos, JHEP 1707 (2017) 081
• Phenomenological Comparison of Models with Extended Higgs Sectors M. Muhlleitner, M.O.P. Sampaio, R. Santos, J. Wittbrodt, JHEP 1708 (2017) 132
• Probing the CP nature of the Higgs coupling in tth events at the LHC S. Amor dos Santos et al., Phys.Rev. D96 (2017) no.1, 013004
• Prospects for charged Higgs searches at the LHC A.G. Akeroyd et al, Eur.Phys.J. C77 (2017) no.5, 276
• The N2HDM under Theoretical and Experimental Scrutiny M. Muhlleitner, M.O.P. Sampaio, R. Santos, J. Wittbrodt, JHEP 1703 (2017) 094
• Gauge-independent Renormalization of the 2-Higgs-Doublet Model M. Krause, R. Lorenz, M. Muehlleitner, R. Santos, H. Ziesche,  Journal of High Energy Physics 1609 143 (2016)
• Optimising Charged Higgs Boson Searches at the Large Hadron Collider Across bbW Final States S. Moretti, R. Santos, P. Sharma, Physics Letters B760 697 (2016)
• Singlet Extensions of the Standard Model at LHC Run 2: Benchmarks and Comparison with the NMSSM R. Costa, M. Muehlleitner, M.O.P. Sampaio, R. Santos, Journal of High Energy Physics 1606 034 (2016)
• Angular distributions in ttH (H→bb) reconstructed events at the LHC S. P. Amor dos Santos, J.P. Araque, R. Cantrill, N.F. Castro, M.C.N. Fiolhais, R. Frederix, R. Gonçalo, R. Martins, R. Santos, J. Silva, A. Onofre, H. Peixoto, A. Reigoto, Phys.Rev. D92 (2015) 3, 034021
• Large pseudoscalar Yukawa couplings in the complex 2HDM Duarte Fontes, Jorge C. Romão, Rui Santos, João P. Silva, JHEP 1506 (2015) 060
• Two-loop stability of a complex singlet extended Standard Model Raul Costa, António P. Morais, Marco O. P. Sampaio, Rui Santos,  Phys.Rev. D92 (2015) 025024
• Undoubtable signs of CP-violation in Higgs boson decays at the LHC run 2 D. Fontes, J.C. Romão, R. Santos, J.P. Silva, Phys.Rev. D92 (2015) 5, 055014
• Are There Hidden Scalars in LHC Higgs Results? A. Arhrib, P.M. Ferreira and Rui Santos, e-Print: arXiv:1311.1520 [hep-ph] JHEP 1403 (2014) 053
• Probing wrong-sign Yukawa couplings at the LHC and a future linear collider P.M. Ferreira, John F. Gunion, Howard E. Haber, Rui Santos, e-Print: arXiv:1403.4736 [hep-ph]  Phys.Rev. D89 (2014) 115003
• Wrong sign and symmetric limits and non-decoupling in 2HDMs P.M. Ferreira, Renato Guedes, Marco O.P. Sampaio, Rui Santos, JHEP 1412 (2014) 067
• Mass-degenerate Higgs bosons at 125 GeV in the Two-Higgs-Doublet Model P.M. Ferreira, H.H. Haber, R. Santos, J.P. Silva, e-Print: arXiv:1211.3131 [hepph] Phys.Rev. D87, (2013) 055009
• Metastability bounds on the two Higgs doublet model A. Barroso, P.M. Ferreira, I.P. Ivanov, R. Santos, e-Print: arXiv:1303.5098 [hepph] JHEP 1306 (2013) 045
• ScannerS: Constraining the phase diagram of a complex scalar singlet at the LHC R. Coimbra, M.O.P. Sampaio, R. Santos, e-Print: arXiv:1301.2599 [hep-ph] Eur. Phys. J. C73 (2013) 2428
• Charged Higgs bosons in single top production at the LHC R. Guedes, S. Moretti, R. Santos, e-Print: arXiv:1207.4071, accepted in JHEP (2012)
• Could the LHC two-photon signal correspond to the heavier scalar in two-Higgs-doublet models? P.M. Ferreira, R. Santos, M. Sher, J.P. Silva, Phys. Rev. D85 035020 (2012)
• Implications of the LHC two-photon signal for two-Higgs-doublet models P.M. Ferreira, R. Santos, M. Sher, J.P. Silva, Phys. Rev. D85 077703 (2012)
• MEtop - a generator for single top production via FCNC interactions R. Coimbra, A. Onofre, R. Santos, M. Won, e-Print: arXiv:1207.7026 [hep-ph] Eur. Phys. J. C72 (2012) 2222
• New physics contributions to the forward-backward asymmetry at the Tevatron S.S. Biswal, S. Mitra, R. Santos, P. Sharma, R.K. Singh, M. Won, Phys. Rev. D86 014016 (2012)
• Probing the scalar-pseudoscalar mixing in the 125 GeV Higgs particle with current data A. Barroso, P.M. Ferreira, R. Santos, J.P. Silva, Phys. Rev. D86 015022 (2012)
• Probing the scalar-pseudoscalar mixing in the 125 GeV Higgs particle with current data A. Barroso, P.M. Ferreira, R. Santos, J.P. Silva, e-Print: arXiv:1205.4247 [hepph] Phys.Rev. D86 (2012) 015022
• Two Higgs Doublet Model in light of the Standard Model H → τ⁺τ⁻ search at the LHC A. Arhrib, C.-W. Chiang, D.K. Ghosh, R. Santos, Phys. Rev. D85 115003 (2012)
• Light Charged Higgs bosons at the LHC in 2HDMs M. Aoki, R. Guedes, S. Kanemura, S. Moretti, R. Santos, K. Yagyu, Phys. Rev. D84 055028 (2011)
• Higgs boson phenomenology in τ⁺τ^- final states at the LHC A. Belyaev, R. Guedes, S. Moretti and R. Santos, JHEP 1007 051 (2010)
• Very Light Higgs Bosons in Extended Models at the LHC A. Belyaev, R. Guedes, S. Moretti and R. Santos, Phys. Rev. D81 095006 (2010)
• Dimension six flavor changing neutral current operators and top-quark production at the LHC R.A. Coimbra, P.M. Ferreira, R.B. Guedes, O. Oliveira, A. Onofre, R. Santos, Miguel Won, Phys. Rev. D79 (2009) 014006
• Distinctive Higgs Signals of a Type II 2HDM at the LHC S. Kanemura, S. Moretti, Y. Mukai, R. Santos and K. Yagyu, Phys. Rev. D79 055017 (2009)
• Double Neutral Higgs production in the Two-Higgs doublet model at the LHC A. Arhrib, R. Benbrik, C.-H. Chen, R. Guedes and R. Santos, JHEP 0908 035 (2009)
• Impact of flavor-changing neutral current top quark interactions on BR(t → bW) P.M. Ferreira and R. Santos, Phys. Rev. D80 114006 (2009)
• Neutral Higgs boson pair production in photon-photon annihilation in the Two Higgs Doublet Model A. Arhrib, R. Benbrik, C.-H. Chen, and R. Santos, Phys. Rev. D80 015010 (2009)
• Collider aspects of flavour physics at high Q F. del Aguila et al. Eur. Phys. J. C57 183-308 (2008)
• Combined effects of strong and electroweak FCNC effective operators in top quark physics at the CERN LHC P.M. Ferreira, R.B. Guedes and R. Santos, Phys. Rev. D77 114008 (2008)
• Search for a light fermiophobic Higgs boson produced via gluon fusion at Hadron Colliders A. Arhrib, R. Benbrik, R.B. Guedes and R. Santos, Phys. Rev. D78 075002 (2008)
• Lepton flavour violating processes at the International Linear Collider P.M. Ferreira, R.B. Guedes and R. Santos, Phys. Rev. D 75 055015 (2007)
• Neutral minima in two-Higgs doublet models A. Barroso, P.M. Ferreira and R. Santos, Phys. Lett. B 652, 181 (2007)
• Search for a fourth generation b-prime-quark at LEP-II at ps = 196 GeV – 209 GeV DELPHI Collaboration (J. Abdallah et al.), Eur. Phys. Journal C 50 507 (2007)
• Charge and CP symmetry breaking in two Higgs doublet models A. Barroso, P.M. Ferreira and R. Santos, Phys. Lett. B 632 84 (2006)
• Contributions from dimension six strong flavor changing operators to t anti-t, t plus gauge boson, and t plus Higgs boson production at the LHC P.M. Ferreira and R. Santos, Phys. Rev. D 74 014006 (2006)
• Flavor changing strong interaction effects on top quark physics at the LHC P.M. Ferreira, O. Oliveira and R. Santos, Phys. Rev. D 73 034011 (2006)
• Stability of the normal vacuum in multi-Higgs-doublet models A. Barroso, P.M. Ferreira, R. Santos and J.P. Silva, Phys. Rev. D 74 085016 (2006)
• Strong flavor changing effective operator contributions to single top quark production P.M. Ferreira and R. Santos, Phys. Rev. D 73 054025 (2006)
• Stability of the tree-level vacuum in two Higgs doublet models against charge or CP spontaneous violation P.M. Ferreira, R. Santos and A. Barroso, Phys. Lett. B 603 219 (2004); Err. Ibid. B 629 114 (2005)
• Bounds on the mass of the b' quark, revisited S.M. Oliveira and R. Santos, Phys. Rev. D 68 093012 (2003)
• New bounds on the mass of a b' quark S. M. Oliveira and R. Santos, Acta Physica Polonica B34 (2003) 5523 (hep-ph/0311047)
• Electroweak corrections to the top quark decay S.M. Oliveira, L. Bruecher, R. Santos and A. Barroso, Phys. Rev. D64 017301 (2001)
• Renormalization of the Cabibbo-Kobayashi-Maskawa matrix A. Barroso, L. Bruecher and R. Santos, Phys. Rev. D 62 096003 (2001)
• Experimental signatures of fermiophobic Higgs bosons L. Bruecher and R. Santos, Eur. Phys. Journal C 12 87 (2000)
• Is there a light fermiophobic Higgs boson? A. Barroso, L. Brüher and R. Santos, Phys. Rev. D60 (1999) 035005
• Renormalization of two Higgs doublet models R. Santos and A. Barroso, Phys. Rev. D56 (1997) 5366 - 5385
• Top Quark Loop Corrections to the Decay H⁺ → h₀ W⁺ in the Two-Higgs-Doublet Model L. Brücher, R. Santos and A. Barroso, Phys. Lett. B391 (1997) 429-433
• Tree level vacuum stability in two Higgs doublet models J. Velhinho, R. Santos and A. Barroso, Phys. Lett. B322 (1994) 213-218

Proceedings Atas de Conferência

• Gravitational waves and the Higgs mass R. Santos, e-Print: arXiv:2207.14057 [hep-ph] Moriond 2022 QCD (2022)
• Beyond the Standard Model in Vector Boson Scattering Signatures M. Gallinaro et al., e-Print: arXiv:2005.09889 [hep-ph] Contribution to: International Workshop on BSM models in Vector Boson Scattering processes (2020)
• NLO corrections to Vector Dark Matter Direct Detection - An update S. Glaus, M. Mühlleitner, J. Müller, S. Patel, R. Santos, PoS CORFU2019 (2020) 046
• Signal versus Background Interference in H^+ → tb signals for MSSM Benchmark Scenarios A. Arhrib, D. Azevedo, R. Benbrik, H. Harouiz, S. Moretti, R. Patrick, R.Santos, EPJ Web Conf. 245 (2020) 06037
• Extended Higgs sector beyond the MSSM and the LHC R. Santos, PoS(ALPS2018)016
• Production of tgammagamma, tZ and tH via Flavour Changing Neutral Currents A. Amorim, J.P. Araque, N.F. Castro, J. Santiago, R. Santos, PoS TOP2015 067 (2016
• Interpretation of the LHC run-1 Higgs results (2HDM) Rui Santos, PoS Charged2014 (2015) 016
• The CP-conserving 2HDM after the 8 TeV run Rui Santos, P.M. Ferreira, Renato Guede, John F. Gunion, Howard E. Haber, Marco O.P. Sampaio, PoS DIS2014 (2014) 127
• 2HDM confronting LHC data Proceedings, 48th Rencontres de Moriond on QCD and High Energy Interactions : La Thuile, Italy, March 9-16, 2013
• Avoiding Death by Vacuum A. Barroso, P.M. Ferreira, I. Ivanov, Rui Santos, João P. Silva, J.Phys.Conf.Ser. 447 (2013) 012051
• Charged Higgs boson production in single top mode at the LHC  Renato Guedes (Lisbon U., CFTC), Stefano Moretti (Southampton U.), Rui Santos (Lisbon U., CFTC & Lisbon, ISEL). Mar 5, 2013. 8 pp.  Published in J.Phys.Conf.Ser. 447 (2013) 012057 Renato Guedes, Stefano Moretti, Rui Santos, J.Phys.Conf.Ser. 447 (2013) 012057
• MEtop – a top FCNC event generator Rita Coimbra, António Onofre, Rui Santos, Miguel Won, J.Phys.Conf.Ser. 447 (2013) 012031
• Charged Higgs discovery potential in the single top mode in 2HDMs R. Guedes, S. Moretti, R. Santos, PoS CHARGED2012 (2012) 021
• Working group report: Physics at the Large Hadron Collider D.K. Ghosh, A. Nyffeler, V. Ravindran, N. Agarwal, P. Agarwal, P. Bandyopadhyay, R. Basu, B. Bhattacherjee, S.S. Biswal, D. Choudhury et al.. May 2011. 17 pp. Published in Pramana 76 (2011) 707-723
• BSM Higgs searches in the gluon fusion process pp → h + jet → τ⁺τ^- + jet at the LHC A. Belyaev, R. Guedes, S. Moretti, R. Santos, PoS DIS2010 (2010) 207
• Charged Higgs Boson Benchmarks in the CP-conserving 2HDM R. Guedes, S. Kanemura, S. Moretti, R. Santos, K. Yagyu, PoS CHARGED2010 (2010) 037
• Light Higgs pair production in the 2HDM: LHC vs. gamma gamma collider R. Santos, Nuovo Cim. C033N2 (2010) 177
• Double Higgs production at a Photon Collider A. Arhrib, R. Benbrik, C.-H. Chen, R. Santos, tDESY-PROC-2009-03 (2009)
• Lepton flavour violation at the International Linear Collider P.M. Ferreira, R.B. Guedes and R. Santos, Acta Physica Polonica Suppl. 1 433 (2008)
• Vacuum Stability in two-Higgs doublet models N. Barros e Sá, A. Barroso, P.M. Ferreira, R. Santos, PoS(CHARGED2008) 014 (2008)
• Contributions from flavor changing effective operators to the physics of the top quark at LHC P. Ferreira and R. Santos, PoS TOP2006 (2006) 004; (hep-ph/0603131)
• Some remarks on tree-level vacuum stability in two Higgs doublet models A. Barroso, P. Ferreira and R. Santos, African Journal of Mathematical Physics Vol 3 1 (2006) 103; (hep-ph/0507329)
• The African varieties of Portuguese: compiling comparable corpora and analyzing data-derived lexicon M. F. Bacelar do Nascimento et al, Proceedings of the Fifth International Conference on Language Resources and Evaluation (LREC 2006), Italy (2006)
• Tree-level vacuum stability in multi Higgs models A. Barroso, P. Ferreira and R. Santos, PoS HEP2005 (2006) 337; (hep-ph/0512037)
• Experimental Signatures of a Fermiophobic Higgs Boson L. Brücher and R. Santos, Particle Physics at the start of the new milenium. Edited by A. I. Studenikin. Singapore, World Scientific, 2001 (hep-ph/0002027)