Refereed articles
[1] A.G. Akeroyd et al.: Prospects for charged Higgs searches at the LHC, Eur. Phys. J. C77 (2017) no.5, 276 no.7, 075019.
[2] M. Krause, M. Muhlleitner, R. Santos, H. Ziesche: HiggstoHiggs boson decays in a 2HDM at nexttoleading order, Phys. Rev. D95 (2017) no.7, 075019.
[3] M. Muhlleitner, M.O.P. Sampaio, R. Santos, J. Wittbrodt: The N2HDM under Theoretical and Experimental Scrutiny, JHEP 1703 (2017) 094.
[4] M. Krause, R. Lorenz, M. Muhlleitner, R. Santos, H. Ziesche: Gaugeindependent Renormalization of the 2HiggsDoublet Model, JHEP 1609 (2016) 143.
[5] S. Moretti, R. Santos, P. Sharma: Optimising Charged Higgs Boson Searches at the Large Hadron Collider Across bbW Final States, Phys.Let. B760 (2016) 697.
[6] R. Costa, M. Muhlleitner, M.O.P. Sampaio, R. Santos: Singlet Extensions of the Standard Model at LHC Run 2: Benchmarks and Comparison with the NMSSM, JHEP 1606 (2016) 034.
[7] D. Fontes, J.C. Romão, R. Santos, J.P. Silva: Undoubtable signs of CPviolation in Higgs boson decays at the LHC run 2, Phys. Rev. D92 (2015) 5, 055014.
[8] S.P. Amor dos Santos, J.P. Araque, R. Cantrill, N.F. Castro, M.C.N. Fiolhais, R. Frederix, R. Goncalo, R. Martins, R. Santos, J. Silva, A. Onofre, H. Peixoto, A. Reigoto, Angular distributions in ttH (H >bb) reconstructed events at the LHC, Phys. Rev. D92 (2015) 3, 034021.
[9] R. Costa, A.P. Morais, M.O.P. Sampaio, R. Santos: Twoloop stability of a complex singlet extended Standard Model, Phys. Rev. D92 (2015) 2, 025024.
[10] D. Fontes, J.C. Romão, R. Santos, J.P. Silva: Large pseudoscalar Yukawa couplings in the complex 2HDM, JHEP 1506 (2015) 060.
[11] P.M. Ferreira, Renato Guedes, Marco O.P. Sampaio,Rui Santos: Wrong sign and symmetric limits and nondecoupling in 2HDMs, JHEP 1412 (2014) 067.
[12] P.M. Ferreira, John F. Gunion, Howard E. Haber, Rui Santos: Probing wrongsign Yukawa couplings at the LHC and a future linear collider, Phys. Rev. D89 (2014) 115003.
[13] A. Arhrib, P.M. Ferreira, Rui Santos: Are There Hidden Scalars in LHC Higgs Results? , JHEP 1403 (2014) 053.
[14] R. Guedes, R. Santos, M. Won: Limits on strong FCNC top couplings at the LHC, Phys. Rev. D88 (2013) 11, 114011.
[15] S.D. Rindani, P. Sharma, R. Santos: Measuring the charged Higgs mass and distinguishing between models with topquark observables, JHEP 1311 (2013) 188.
[16] A. Barroso, P.M. Ferreira, I.P. Ivanov, Rui Santos: Metastability bounds on the two Higgs doublet model, JHEP 1306 (2013) 045.
[17] A. Barroso, P.M. Ferreira, I.P. Ivanov, Rui Santos, Joao P. Silva: Evading death by vacuum, Eur. Phys. J. C (2013) 73:2537.
[18] R. Coimbra, M. O.P. Sampaio and R. Santos, ScannerS: Constraining the phase diagram of a complex scalar singlet at the LHC, Eur. Phys. J. C (2013) 73:2428.
[19] P.M. Ferreira, H. E. Haber, R. Santos and J. P. Silva, Massdegenerate Higgs bosons at 125 GeV in the TwoHiggsDoublet Model, Phys. Rev. D.87 (2013) 055009.
[20] R. Coimbra, A. Onofre, R. Santos and M. Won, MEtop  a generator for single top production via FCNC interactions, Eur. Phys. J. C72 (2012) 2222.
[21] R. Guedes, S. Moretti, and R. Santos, Charged Higgs bosons in single top production at the LHC, JHEP 1210 (2012) 119.
[22] A. Barroso, P.M. Ferreira, R. Santos and J. P. Silva, Probing the scalarpseudoscalar mixing in the 125 GeV Higgs particle with current data, Phys. Rev. D86 (2012) 015022.
[23] S. S. Biswal, S. Mitra, R. Santos, P. Sharma, R. K. Singh and M. Won, New physics contributions to the forwardbackward asymmetry at the Tevatron, Phys.Rev. D86 (2012) 014016.
[24] P.M. Ferreira, R. Santos, M. Sher and J. P. Silva, Could the LHC twophoton signal correspond to the heavier scalar in twoHiggsdoublet models?, Phys. Rev. D85 (2012) 035020.
[25] A. Arhrib, C.W. Chiang, D. K. Ghosh, R. Santos, Two Higgs Doublet Model in light of the Standard Model H>t+t search at the LHC, Phys.Rev. D85 (2012) 115003.
[26] P.M. Ferreira, R. Santos, M. Sher, J. P. Silva, Implications of the LHC twophoton signal for twoHiggsdoublet models, Phys. Rev. D85 (2012) 077703.
[27] M. Aoki, R. Guedes, S. Kanemura, S. Moretti, R. Santos and K. Yagyu, Light Charged Higgs bosons at the LHC in 2HDMs, Phys. Rev. D84 (2011) 055028.
[28] A. Belyaev, R. Guedes , S. Moretti, R. Santos, Very Light Higgs Bosons in Extended Models at the LHC, Phys.Rev.D81:095006,2010.
[29] A. Belyaev, R. Guedes , S. Moretti, R. Santos, Higgs boson phenomenology in tau+ tau final states at the LHC, JHEP 1007:051,2010.
[30] A. Arhrib, R. Benbrik, C.H. Chen, R. Guedes, R. Santos, Double Neutral Higgs production in the TwoHiggs doublet model at the LHC. JHEP 0908:035, 2009.
[31] A. Arhrib, R. Benbrik, C.H. Chen, R. Santos, Neutral Higgs boson pair production in photonphoton annihilation in the Two Higgs Doublet Model. Phys. Rev. D80 (2009) 015010.
[32] S. Kanemura, S. Moretti, Y. Mukai, R. Santos, K. Yagyu, Distinctive Higgs Signals of a Type II 2HDM at the LHC. Phys. Rev. D79 (2009) 055017.
[33] R.A. Coimbra, P.M. Ferreira, R.B. Guedes, O. Oliveira, A. Onofre, R. Santos, M. Won, Dimension six FCNC operators and top production at the LHC. Phys. Rev. D79 (2009) 014006.
[34] A. Arhrib, R. Benbrik, R. Guedes, R. Santos, Search for a light fermiophobic Higgs boson produced via gluon fusion at Hadron Colliders. Phys. Rev. D78 (2008) 75002.
[35] P.M. Ferreira, R.B. Guedes, R. Santos, Combined effects of strong and electroweak FCNC effective operators in top quark physics at the CERN LHC. Phys. Rev. D77 (2008) 114008.
[36] F. del Aguila et al.  Report of Working Group 1 of the CERN Workshop Flavor in the Era of the LHC. Published in Collider aspects of flavour physics at high Q.. Eur. Phys. J. C57 (2008) 183308.
[37] A. Barroso, P.M. Ferreira and R. Santos, Neutral minima in twoHiggs doublet models. Phys. Lett. B652 (2007) 181193.
[38] DELPHI Collaboration (J. Abdallah et al.), Search for a fourth generation bprimequark at LEPII at s**(1/2) = 196GeV  209GeV. Eur. Phys. J. C50 (2007) 507518.
[39] P.M. Ferreira, R.B. Guedes and R. Santos, Lepton flavour violating processes at the International Linear Collider. Phys. Rev. D75 (2007) 055015.
[40] A. Barroso, P.M. Ferreira, R. Santos and João P. Silva, Stability of the normal vacuum in multiHiggsdoublet models.Phys. Rev. D74 (2006) 085016.
[41] P.M. Ferreira and R. Santos, Contributions from dimension six strong flavor changing operators to t antit, t plus gauge boson, and t plus Higgs boson production at the LHC, Phys. Rev. D74 (2006) 014006.
[42] P.M. Ferreira and R. Santos, Strong flavor changing effective operator contributions to single top quark production, Phys. Rev. D73 (2006) 054025.
[43] P.M. Ferreira, O. Oliveira and R. Santos, Flavor changing strong interaction effects on top quark physics at the LHC, Phys.Rev.D73 (2006) 034011.
[44] A. Barroso, P.M. Ferreira, R. Santos, Charge and CP symmetry breaking in two Higgs doublet models, Phys.Lett.B632 (2006) 684687.
[45] P.M. Ferreira, R. Santos, A. Barroso, Stability of the treelevel vacuum in two Higgs doublet models against charge or CP spontaneous violation, Phys. Lett. B603 (2004) 219229; Erratumibid.B629:114,2005.
[46] S. M. Oliveira and R. Santos, Bounds on the mass of the b´ quark reexamined. Phys. Rev. D68 (2003) 093012.
[47] S. M. Oliveira, L. Brücher, R. Santos and A. Barroso, Electroweak corrections to the top quark decay. Phys. Rev. D 64 (2001) 017301.
[48] A. Barroso, L. Brücher and R. Santos, Renormalization of the CabibboKobayashiMaskawa matrix. Phys. Rev. D 62 (2000) 066003.
[49] L. Brücher and R. Santos, Experimental signatures of light fermiophobic Higgs boson, Eur. Phys. J. C12 (2000) 8798.
[50] A. Barroso, L. Brücher and R. Santos, Is there a light fermiophobic Higgs boson?, Phys. Rev. D 70 (1999) 035805.
[51] R. Santos A. Barroso and L. Brücher, Top quark loop corrections to the decay H+ > h W+ , cn the Two Higgg Doublet Model, Phys. Lett. B 491 (1997) 429433.
[52] R. Santos and A. Barroso, Renormalization of Two Higgs Doublet Models, Phys. Rev. D 56 (1997) 53665385.
[53] J. Velhinho, R. Santos and A. Barroso, Tree Level Vacuum Stability in Two Higgs Doublet Models}, Phs. Lett. B322 (1994) 213218.

Proceedings
[1] A. Amorim, J.P. Araque, N.F. Castro, J. Santiago, R. Santos: Production of tgamma and tZ and tH via Flavour Changing Neutral Currents, PoS TOP2015 (2016) 067.
[2] Rui Santos, P.M. Ferreira, Renato Guedes, John F. Gunion, Howard E. Haber, Marco O.P. Sampaio: The CPconserving 2HDM after the 8 TeV run, PoS DIS2014 (2014) 127.
[3] Rui Santos, P.M. Ferreira, Renato Guedes, John F. Gunion, Howard E. Haber, Marco O.P. Sampaio: The Wrong Sign limit in the 2HDM, EConf Conference: C140602.2.
[4] A. Barroso, P.M. Ferreira, I. Ivanov, R. Santos, João P. Silva: Avoiding Death by Vacuum, J. Phys. Conf. Ser. 447 (2013) 012051.
[5] P.M. Ferreira, R. Santos, M. Sher, J.P. Silva: 2HDM confronting LHC data, Proceedings of 48th Rencontres de Moriond on QCD and High Energy Interactions : La Thuile, Italy, March 916, 2013.
[6] R. Coimbra, A. Onofre, R. Santos, M. Won, MEtop – a top FCNC event generator, J. Phys. Conf. Ser. 447 (2013) 012031.
[7] R. Guedes, S. Moretti, R. Santos, Charged Higgs boson production in single top mode at the LHC, J. Phys. Conf. Ser. 447 (2013) 012057.
[8] R. Guedes, S. Moretti, R. Santos, Charged Higgs discovery potential in the single top mode in 2HDMs, PoS CHARGED2012 (2012) 021.
[9] D.K. Ghosh, A. Nyffeler, V. Ravindran, N. Agarwal, P. Agarwal, P. Bandyopadhyay, R. Basu, B. Bhattacherjee, S.S. Biswal, D. Choudhury et al., Working group report: Physics at the Large Hadron Collider, Pramana 76 (2011) 707723.
[10] R. Santos, Light Higgs pair production in the 2HDM: LHC vs. gamma gamma collider, Nuovo Cim. C033N2 (2010) 177182.
[11] R. Guedes, S.Kanemura, S. Moretti, R. Santos and K. Yagyu, Charged Higgs Boson Benchmarks in the CPconserving 2HDM, PoS CHARGED2010 (2010) 037.
[12] A. Arhrib, R. Benbrik, C.H. Chen and R. Santos, Double Higgs production at a photon collider, DESYPROC200903 Photon 2009: International Conference on the St Conference: C090511, p.6470.
[13] R. Guedes, R. Santos, M. Won, top FCNC physics at a Linear Collider after the LHC. to appear in the proceedings of the International Linear Collider Workshop 2010 (LCWS10 & ILC10), Beijing, China.
[14] A. Belyaev, R. Guedes, S. Moretti, R. Santos, BSM Higgs searches in the gluon fusion process pp > h +jet > tau^+ tau^ + jet at the LHC, Published in PoS DIS2010:207,2010.
[15] R. Santos, "Higgs pair production in THDM  LHC vs. photonphoton Collider", "LC09  e+e Physics at the TeV Scale and the Dark Matter Connection" Nuovo Cimento C 33 (2010) 177.
[16] A. Arhrib, R. Benbrik, C.H. Chen, R. Santos, Double Higgs production at a photon collider., DESYPROC200903, Jan 2010. 7pp., Prepared for Photon 2009: International Conference on the Structure and Interactions of the Photon: 18th International Workshop on PhotonPhoton Collisions: International Workshop on High Energy Photon Linear Colliders, Hamburg, German .Published in *Hamburg 2009, Photon 2009* 6470.
[17] N. Barros e Sa, A. Barroso, P. Ferreira, R. Santos, Vacuum Stability in twoHiggs doublet models, PoS CHARGED2008:014,2008.
[18] P.M. Ferreira, R.B. Guedes, R. Santos, Lepton flavour violation at the ILC, Acta Phys.Polon.Supp.1:433436,2008.
[19] P.M. Ferreira and R. Santos, Contributions from flavour changing effective operators to the physics of the top quark at LHC, PoS TOP2006 (2006) 004; proceedings of TOP 2006 International Workshop on Top Quark Physics January 1215, 2006 University of Coimbra, Portugal.
[20] A. Barroso, P.M. Ferreira and R. Santos, TreeLevel Vacuum Stability in Multi Higgs Models, PoS(HEP2005)337, HEP2005, International Europhysics Conference on High Energy Physics, July 21st  27th 2005, Lisboa, Portugal.
[21] A. Barroso, P.M. Ferreira and R. Santos, Some remarks on treelevel vacuum stability in two Higgs doublet models, Proceedings of International Conference on High Energy and Mathematical Physics, Marrakech, Morocco, 47 Apr 2005. ePrint Archive: hepph/0507329.
[22] S. M. Oliveira and R. Santos, New bounds on the mass of a b´ quark, Acta Physica Polonica B34 (2003) 5523.
[23] S.Andringa, et al. Search for a fourth generation b´ quark at LEPII at center of mass energies of 200209 GeV. Contributed paper to EPS 2003 (Aachen) and LP 2003 (FNAL).
[24] A. Barroso, L. Brücher, S. M. Oliveira and R. Santos, One loop electroweak corrections to the decay t > b W. FÍSICA 2000  12ª Conferência Nacional de Física, Figueira da Foz, Portugal, 27 a 30 de Setembro de 2000.
[25] L. Brücher and R. Santos, Experimental Signatures of a Fermiophobic Higgs Boson. Publicado em PARTICLE PHYSICS AT THE START OF THE NEW MILLENNIUM. Edited by Alexander I. Studenikin. Singapore, World Scientific, 2001.
[26] R. Santos, A. Barroso and L. Brücher, Top loop corrections to axion decays in twoHiggsdoublet models. FÍSICA 98  11ª Conferência Nacional de Física, Forum da Maia.
