Implications of LHC data on 125 GeV Higgs-like boson for the Standard Model and its various extensions
Abstract Recent data on 125 GeV Higgs-like boson at the LHC start to constrain the electroweak symmetry breaking (EWSB) sector of the Standard Model (SM) and its various extensions. If one imposes the local gauge symmetry of the SM (SU(3)c × SU(2)L × U(1)Y) to any possible new physics scenarios, the...
Ausführliche Beschreibung
Autor*in: |
Choi, Suyong [verfasserIn] |
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E-Artikel |
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Englisch |
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2013 |
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Anmerkung: |
© SISSA, Trieste, Italy 2013 |
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Übergeordnetes Werk: |
Enthalten in: Journal of high energy physics - Berlin : Springer, 1997, 2013(2013), 10 vom: 31. Okt. |
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Übergeordnetes Werk: |
volume:2013 ; year:2013 ; number:10 ; day:31 ; month:10 |
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DOI / URN: |
10.1007/JHEP10(2013)225 |
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Katalog-ID: |
SPR030432162 |
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520 | |a Abstract Recent data on 125 GeV Higgs-like boson at the LHC start to constrain the electroweak symmetry breaking (EWSB) sector of the Standard Model (SM) and its various extensions. If one imposes the local gauge symmetry of the SM (SU(3)c × SU(2)L × U(1)Y) to any possible new physics scenarios, the SM Higgs properties will be modified by intrinsically two ways: by new physics either coupling directly to the SM Higgs boson h, or affecting indirectly the SM Higgs properties through the mixing of h with a SM singlet scalar s. (Here s is a singlet under the SM gauge group, but may be charged under a new gauge charge and can have nonrenormalizable couplings to non-SM particles.) The models of two Higgs doublets, extra sequential and mirror fermions belong to the first category, whereas the models with a hidden sector dark matter, extra vector-like fermions and new charged vector bosons, which can enhance the diphoton rate of the SM Higgs-like resonance, belong to the second category. We perform a global fit to data in terms of the effective Lagrangian description of two interaction eigenstates of scalar bosons, a SM Higgs and a singlet scalar, and their mixing. This framework is more suitable to study singlet-extended scenarios discussed above compared to other approaches based on the Lagrangian of mass eigenstates. With fairly model-independent assumptions, the effective Lagrangian contains at most four free parameters still encompassing the majority of models in the literature. Interestingly, the SM gives the best fit if all data from ATLAS and CMS are used, whereas various singlet extensions can fit better to individual ATLAS or CMS data. Without further assumptions, an upper bound on the total width (or, non-standard branching ratio) is generically obtained. Furthermore, the global fit based on our parameterization can be used to probe interactions of the singlet scalar if the singlet resides below 2mW. | ||
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650 | 4 | |a Beyond Standard Model |7 (dpeaa)DE-He213 | |
650 | 4 | |a Standard Model |7 (dpeaa)DE-He213 | |
700 | 1 | |a Jung, Sunghoon |4 aut | |
700 | 1 | |a Ko, P. |4 aut | |
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10.1007/JHEP10(2013)225 doi (DE-627)SPR030432162 (SPR)JHEP10(2013)225-e DE-627 ger DE-627 rakwb eng Choi, Suyong verfasserin aut Implications of LHC data on 125 GeV Higgs-like boson for the Standard Model and its various extensions 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © SISSA, Trieste, Italy 2013 Abstract Recent data on 125 GeV Higgs-like boson at the LHC start to constrain the electroweak symmetry breaking (EWSB) sector of the Standard Model (SM) and its various extensions. If one imposes the local gauge symmetry of the SM (SU(3)c × SU(2)L × U(1)Y) to any possible new physics scenarios, the SM Higgs properties will be modified by intrinsically two ways: by new physics either coupling directly to the SM Higgs boson h, or affecting indirectly the SM Higgs properties through the mixing of h with a SM singlet scalar s. (Here s is a singlet under the SM gauge group, but may be charged under a new gauge charge and can have nonrenormalizable couplings to non-SM particles.) The models of two Higgs doublets, extra sequential and mirror fermions belong to the first category, whereas the models with a hidden sector dark matter, extra vector-like fermions and new charged vector bosons, which can enhance the diphoton rate of the SM Higgs-like resonance, belong to the second category. We perform a global fit to data in terms of the effective Lagrangian description of two interaction eigenstates of scalar bosons, a SM Higgs and a singlet scalar, and their mixing. This framework is more suitable to study singlet-extended scenarios discussed above compared to other approaches based on the Lagrangian of mass eigenstates. With fairly model-independent assumptions, the effective Lagrangian contains at most four free parameters still encompassing the majority of models in the literature. Interestingly, the SM gives the best fit if all data from ATLAS and CMS are used, whereas various singlet extensions can fit better to individual ATLAS or CMS data. Without further assumptions, an upper bound on the total width (or, non-standard branching ratio) is generically obtained. Furthermore, the global fit based on our parameterization can be used to probe interactions of the singlet scalar if the singlet resides below 2mW. Higgs Physics (dpeaa)DE-He213 Beyond Standard Model (dpeaa)DE-He213 Standard Model (dpeaa)DE-He213 Jung, Sunghoon aut Ko, P. aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2013(2013), 10 vom: 31. Okt. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2013 year:2013 number:10 day:31 month:10 https://dx.doi.org/10.1007/JHEP10(2013)225 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_40 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_161 GBV_ILN_293 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4307 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4338 AR 2013 2013 10 31 10 |
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10.1007/JHEP10(2013)225 doi (DE-627)SPR030432162 (SPR)JHEP10(2013)225-e DE-627 ger DE-627 rakwb eng Choi, Suyong verfasserin aut Implications of LHC data on 125 GeV Higgs-like boson for the Standard Model and its various extensions 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © SISSA, Trieste, Italy 2013 Abstract Recent data on 125 GeV Higgs-like boson at the LHC start to constrain the electroweak symmetry breaking (EWSB) sector of the Standard Model (SM) and its various extensions. If one imposes the local gauge symmetry of the SM (SU(3)c × SU(2)L × U(1)Y) to any possible new physics scenarios, the SM Higgs properties will be modified by intrinsically two ways: by new physics either coupling directly to the SM Higgs boson h, or affecting indirectly the SM Higgs properties through the mixing of h with a SM singlet scalar s. (Here s is a singlet under the SM gauge group, but may be charged under a new gauge charge and can have nonrenormalizable couplings to non-SM particles.) The models of two Higgs doublets, extra sequential and mirror fermions belong to the first category, whereas the models with a hidden sector dark matter, extra vector-like fermions and new charged vector bosons, which can enhance the diphoton rate of the SM Higgs-like resonance, belong to the second category. We perform a global fit to data in terms of the effective Lagrangian description of two interaction eigenstates of scalar bosons, a SM Higgs and a singlet scalar, and their mixing. This framework is more suitable to study singlet-extended scenarios discussed above compared to other approaches based on the Lagrangian of mass eigenstates. With fairly model-independent assumptions, the effective Lagrangian contains at most four free parameters still encompassing the majority of models in the literature. Interestingly, the SM gives the best fit if all data from ATLAS and CMS are used, whereas various singlet extensions can fit better to individual ATLAS or CMS data. Without further assumptions, an upper bound on the total width (or, non-standard branching ratio) is generically obtained. Furthermore, the global fit based on our parameterization can be used to probe interactions of the singlet scalar if the singlet resides below 2mW. Higgs Physics (dpeaa)DE-He213 Beyond Standard Model (dpeaa)DE-He213 Standard Model (dpeaa)DE-He213 Jung, Sunghoon aut Ko, P. aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2013(2013), 10 vom: 31. Okt. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2013 year:2013 number:10 day:31 month:10 https://dx.doi.org/10.1007/JHEP10(2013)225 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_40 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_161 GBV_ILN_293 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4307 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4338 AR 2013 2013 10 31 10 |
allfields_unstemmed |
10.1007/JHEP10(2013)225 doi (DE-627)SPR030432162 (SPR)JHEP10(2013)225-e DE-627 ger DE-627 rakwb eng Choi, Suyong verfasserin aut Implications of LHC data on 125 GeV Higgs-like boson for the Standard Model and its various extensions 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © SISSA, Trieste, Italy 2013 Abstract Recent data on 125 GeV Higgs-like boson at the LHC start to constrain the electroweak symmetry breaking (EWSB) sector of the Standard Model (SM) and its various extensions. If one imposes the local gauge symmetry of the SM (SU(3)c × SU(2)L × U(1)Y) to any possible new physics scenarios, the SM Higgs properties will be modified by intrinsically two ways: by new physics either coupling directly to the SM Higgs boson h, or affecting indirectly the SM Higgs properties through the mixing of h with a SM singlet scalar s. (Here s is a singlet under the SM gauge group, but may be charged under a new gauge charge and can have nonrenormalizable couplings to non-SM particles.) The models of two Higgs doublets, extra sequential and mirror fermions belong to the first category, whereas the models with a hidden sector dark matter, extra vector-like fermions and new charged vector bosons, which can enhance the diphoton rate of the SM Higgs-like resonance, belong to the second category. We perform a global fit to data in terms of the effective Lagrangian description of two interaction eigenstates of scalar bosons, a SM Higgs and a singlet scalar, and their mixing. This framework is more suitable to study singlet-extended scenarios discussed above compared to other approaches based on the Lagrangian of mass eigenstates. With fairly model-independent assumptions, the effective Lagrangian contains at most four free parameters still encompassing the majority of models in the literature. Interestingly, the SM gives the best fit if all data from ATLAS and CMS are used, whereas various singlet extensions can fit better to individual ATLAS or CMS data. Without further assumptions, an upper bound on the total width (or, non-standard branching ratio) is generically obtained. Furthermore, the global fit based on our parameterization can be used to probe interactions of the singlet scalar if the singlet resides below 2mW. Higgs Physics (dpeaa)DE-He213 Beyond Standard Model (dpeaa)DE-He213 Standard Model (dpeaa)DE-He213 Jung, Sunghoon aut Ko, P. aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2013(2013), 10 vom: 31. Okt. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2013 year:2013 number:10 day:31 month:10 https://dx.doi.org/10.1007/JHEP10(2013)225 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_40 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_161 GBV_ILN_293 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4307 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4338 AR 2013 2013 10 31 10 |
allfieldsGer |
10.1007/JHEP10(2013)225 doi (DE-627)SPR030432162 (SPR)JHEP10(2013)225-e DE-627 ger DE-627 rakwb eng Choi, Suyong verfasserin aut Implications of LHC data on 125 GeV Higgs-like boson for the Standard Model and its various extensions 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © SISSA, Trieste, Italy 2013 Abstract Recent data on 125 GeV Higgs-like boson at the LHC start to constrain the electroweak symmetry breaking (EWSB) sector of the Standard Model (SM) and its various extensions. If one imposes the local gauge symmetry of the SM (SU(3)c × SU(2)L × U(1)Y) to any possible new physics scenarios, the SM Higgs properties will be modified by intrinsically two ways: by new physics either coupling directly to the SM Higgs boson h, or affecting indirectly the SM Higgs properties through the mixing of h with a SM singlet scalar s. (Here s is a singlet under the SM gauge group, but may be charged under a new gauge charge and can have nonrenormalizable couplings to non-SM particles.) The models of two Higgs doublets, extra sequential and mirror fermions belong to the first category, whereas the models with a hidden sector dark matter, extra vector-like fermions and new charged vector bosons, which can enhance the diphoton rate of the SM Higgs-like resonance, belong to the second category. We perform a global fit to data in terms of the effective Lagrangian description of two interaction eigenstates of scalar bosons, a SM Higgs and a singlet scalar, and their mixing. This framework is more suitable to study singlet-extended scenarios discussed above compared to other approaches based on the Lagrangian of mass eigenstates. With fairly model-independent assumptions, the effective Lagrangian contains at most four free parameters still encompassing the majority of models in the literature. Interestingly, the SM gives the best fit if all data from ATLAS and CMS are used, whereas various singlet extensions can fit better to individual ATLAS or CMS data. Without further assumptions, an upper bound on the total width (or, non-standard branching ratio) is generically obtained. Furthermore, the global fit based on our parameterization can be used to probe interactions of the singlet scalar if the singlet resides below 2mW. Higgs Physics (dpeaa)DE-He213 Beyond Standard Model (dpeaa)DE-He213 Standard Model (dpeaa)DE-He213 Jung, Sunghoon aut Ko, P. aut Enthalten in Journal of high energy physics Berlin : Springer, 1997 2013(2013), 10 vom: 31. Okt. (DE-627)320910571 (DE-600)2027350-2 1029-8479 nnns volume:2013 year:2013 number:10 day:31 month:10 https://dx.doi.org/10.1007/JHEP10(2013)225 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_40 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_161 GBV_ILN_293 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4307 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4338 AR 2013 2013 10 31 10 |
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Implications of LHC data on 125 GeV Higgs-like boson for the Standard Model and its various extensions |
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Abstract Recent data on 125 GeV Higgs-like boson at the LHC start to constrain the electroweak symmetry breaking (EWSB) sector of the Standard Model (SM) and its various extensions. If one imposes the local gauge symmetry of the SM (SU(3)c × SU(2)L × U(1)Y) to any possible new physics scenarios, the SM Higgs properties will be modified by intrinsically two ways: by new physics either coupling directly to the SM Higgs boson h, or affecting indirectly the SM Higgs properties through the mixing of h with a SM singlet scalar s. (Here s is a singlet under the SM gauge group, but may be charged under a new gauge charge and can have nonrenormalizable couplings to non-SM particles.) The models of two Higgs doublets, extra sequential and mirror fermions belong to the first category, whereas the models with a hidden sector dark matter, extra vector-like fermions and new charged vector bosons, which can enhance the diphoton rate of the SM Higgs-like resonance, belong to the second category. We perform a global fit to data in terms of the effective Lagrangian description of two interaction eigenstates of scalar bosons, a SM Higgs and a singlet scalar, and their mixing. This framework is more suitable to study singlet-extended scenarios discussed above compared to other approaches based on the Lagrangian of mass eigenstates. With fairly model-independent assumptions, the effective Lagrangian contains at most four free parameters still encompassing the majority of models in the literature. Interestingly, the SM gives the best fit if all data from ATLAS and CMS are used, whereas various singlet extensions can fit better to individual ATLAS or CMS data. Without further assumptions, an upper bound on the total width (or, non-standard branching ratio) is generically obtained. Furthermore, the global fit based on our parameterization can be used to probe interactions of the singlet scalar if the singlet resides below 2mW. © SISSA, Trieste, Italy 2013 |
abstractGer |
Abstract Recent data on 125 GeV Higgs-like boson at the LHC start to constrain the electroweak symmetry breaking (EWSB) sector of the Standard Model (SM) and its various extensions. If one imposes the local gauge symmetry of the SM (SU(3)c × SU(2)L × U(1)Y) to any possible new physics scenarios, the SM Higgs properties will be modified by intrinsically two ways: by new physics either coupling directly to the SM Higgs boson h, or affecting indirectly the SM Higgs properties through the mixing of h with a SM singlet scalar s. (Here s is a singlet under the SM gauge group, but may be charged under a new gauge charge and can have nonrenormalizable couplings to non-SM particles.) The models of two Higgs doublets, extra sequential and mirror fermions belong to the first category, whereas the models with a hidden sector dark matter, extra vector-like fermions and new charged vector bosons, which can enhance the diphoton rate of the SM Higgs-like resonance, belong to the second category. We perform a global fit to data in terms of the effective Lagrangian description of two interaction eigenstates of scalar bosons, a SM Higgs and a singlet scalar, and their mixing. This framework is more suitable to study singlet-extended scenarios discussed above compared to other approaches based on the Lagrangian of mass eigenstates. With fairly model-independent assumptions, the effective Lagrangian contains at most four free parameters still encompassing the majority of models in the literature. Interestingly, the SM gives the best fit if all data from ATLAS and CMS are used, whereas various singlet extensions can fit better to individual ATLAS or CMS data. Without further assumptions, an upper bound on the total width (or, non-standard branching ratio) is generically obtained. Furthermore, the global fit based on our parameterization can be used to probe interactions of the singlet scalar if the singlet resides below 2mW. © SISSA, Trieste, Italy 2013 |
abstract_unstemmed |
Abstract Recent data on 125 GeV Higgs-like boson at the LHC start to constrain the electroweak symmetry breaking (EWSB) sector of the Standard Model (SM) and its various extensions. If one imposes the local gauge symmetry of the SM (SU(3)c × SU(2)L × U(1)Y) to any possible new physics scenarios, the SM Higgs properties will be modified by intrinsically two ways: by new physics either coupling directly to the SM Higgs boson h, or affecting indirectly the SM Higgs properties through the mixing of h with a SM singlet scalar s. (Here s is a singlet under the SM gauge group, but may be charged under a new gauge charge and can have nonrenormalizable couplings to non-SM particles.) The models of two Higgs doublets, extra sequential and mirror fermions belong to the first category, whereas the models with a hidden sector dark matter, extra vector-like fermions and new charged vector bosons, which can enhance the diphoton rate of the SM Higgs-like resonance, belong to the second category. We perform a global fit to data in terms of the effective Lagrangian description of two interaction eigenstates of scalar bosons, a SM Higgs and a singlet scalar, and their mixing. This framework is more suitable to study singlet-extended scenarios discussed above compared to other approaches based on the Lagrangian of mass eigenstates. With fairly model-independent assumptions, the effective Lagrangian contains at most four free parameters still encompassing the majority of models in the literature. Interestingly, the SM gives the best fit if all data from ATLAS and CMS are used, whereas various singlet extensions can fit better to individual ATLAS or CMS data. Without further assumptions, an upper bound on the total width (or, non-standard branching ratio) is generically obtained. Furthermore, the global fit based on our parameterization can be used to probe interactions of the singlet scalar if the singlet resides below 2mW. © SISSA, Trieste, Italy 2013 |
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container_issue |
10 |
title_short |
Implications of LHC data on 125 GeV Higgs-like boson for the Standard Model and its various extensions |
url |
https://dx.doi.org/10.1007/JHEP10(2013)225 |
remote_bool |
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author2 |
Jung, Sunghoon Ko, P. |
author2Str |
Jung, Sunghoon Ko, P. |
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hochschulschrift_bool |
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doi_str |
10.1007/JHEP10(2013)225 |
up_date |
2024-07-03T16:28:57.338Z |
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