top yukawa couplings

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  • Top Yukawa Coupling and Four Top Quark Production

    Top Quark and Higgs Boson Strongly Interacting Higgs (125GeV) Effective Field Theory Experimental Data Natural NP models always have non-trial couplings between top quark and NP particles SUSY, LH, Composite, RS, TC… Weakly Interacting Top Measuring Top Yukawa coupling (and its sign) is the next big step! 4

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  • [1907.01590] Measurement of the top quark Yukawa coupling ...

    2019-7-3u2002·u2002Results are presented for an extraction of the top quark Yukawa coupling from top quark-antiquark ($mathrm{tbar{t}}$) kinematic distributions in the lepton plus jets final state in proton-proton collisions, based on data collected by the CMS experiment at the LHC at $sqrt{s} =$ 13 TeV, corresponding to an integrated luminosity of 35.8 fb$^{-1}$. Corrections from weak …

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  • Top, bottom and charm Yukawa couplings

    2018-4-8u2002·u2002Charm/bottom and top-Higgs Yukawa couplings Constraints on charm, bottom and top Yukawa coupling are one of the benchmark results of the current LHC program ‣ deviations from SM expectations would reveal new physics ‣ charm and bottom couplings can be probed in VH→cc, H→J ψɣ, VH→bb, boosted H→bb ‣ decay in bottom quarks characterized by highest BR in SM

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  • Probing the top Yukawa coupling at the LHC via associated ...

    2020-9-15u2002·u2002We study Higgs boson production associated with single top or anti-top via t-channel weak boson exchange at the LHC.The process is an ideal probe of the top quark Yukawa coupling, because we can measure the relative phase of htt and hWW couplings, thanks to the significant interference between the two amplitudes. By choosing the emitted W momentum along the polar …

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  • Phys. Rev. D 99, 035033 (2019) - Top-bottom-tau Yukawa ...

    2019-2-20u2002·u2002Assuming unified Yukawa couplings of order one or larger, the preferred common scale of new physics (superpartners and vectorlike matter) is in the 3 TeV to 30 TeV range, with larger couplings favoring smaller scales. Splitting superpartner masses from masses of vectorlike fields, the preferred scales extend in both directions.

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  • Precision Calculations to Top- and Bottom-Yukawa Couplings ...

    Top- and Bottom-Yukawa Couplings within the SM and BSM Luminita Mihaila 1. Motivation After the end of the LHC run I and the start of the LHC run II, the direct searches for su-persymmetric particles remained unsuccessful, thus increasing the exclusion bounds for the super-symmetric mass scale towards the TeV range.

    Get Price
  • PHYSICAL REVIEW D 97, 055009 (2018)

    Yukawa couplings of vectorlike quarks the IR fixed point value of the top Yukawa coupling independently points to a multi-TeV range for vectorlike matter and superpartners. Assuming a universal value for all large Yukawa couplings at the grand unified theory scale, the measured top quark mass can be obtained from the IR fixed point for tanβ ≃4.

    Get Price
  • standard model - Technical naturalness of Yukawa couplings ...

    2021-10-5u2002·u200211. Top's Yukawa coupling of order one is technically natural, the much smaller couplings are not natural. One may find this problem discussed under the term 'hierarchy of Yukawa couplings'. The previous paragraph really says that the Standard Model doesn't have any mechanism to explain the smallness of any non-top Yukawa couplings.

    Get Price
  • Masses, Mixings, Yukawa Couplings and their Symmetries

    2009-4-20u2002·u2002Masses, Mixings, Yukawa Couplings and their Symmetries Arcadi Santamaria) CERN, Geneva, Switzerland Abstract We present a method to nd the number of real and imaginary observ-able parameters coming from the Yukawa sector in an arbitrary gauge theory. The method leads naturally to a classi cation of Yukawa couplings accord-

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  • Probing [equation]-violating Top-Yukawa Couplings at the ...

    2017-8-31u2002·u2002X.-G. He, Y. Tang, G. Valencia, Interplay between new physics in one-loop Higgs couplings and the top-quark Yukawa coupling. Phys. Rev. D 88, 033005 (2013). arXiv:1305.5420 ADS CrossRef Google Scholar

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  • LARGE TOP QUARK YUKAWA COUPLING AND HORIZONTAL

    2005-3-1u2002·u2002Since the top quark mass is of order weak scale[?], its corresponding Yukawa coupling is of order unity. On the other hand if the VEVs of the Higgs doublets in the theory are comparable, b and τ couplings are much smaller than one. In this paper we build a model that incorporates a large top and small bottom and tau Yukawa couplings.

    Get Price
  • Top-bottom-tau Yukawa coupling unification in the MSSM+1VF ...

    2021-9-14u2002·u2002In the MSSM extended by a complete vectorlike family, precise top, bottom and tau Yukawa coupling unification can be achieved assuming SUSY threshold corrections which are typical for comparable superpartner masses. Furthermore, the unification is possible with a large unified coupling, implying that all three fermion masses can be simultaneously close to their IR …

    Get Price
  • Top-Higgs Yukawa Coupling Measurement at a Linear e Collider

    2017-11-12u2002·u2002accurately measured: mass, width, etc, and indeed its couplings to bosons and fermions. The couplings to the Z and W gauge bosons can be measured from the Higgstrahlung process: Z ! ZH [1] and the fusion processes: WW; ZZ!H[2]. On the other hand, the top quark provides a unique opportunity to measure the Higgs Yukawa coupling to fermions.

    Get Price
  • Unification of gauge and Yukawa couplings - ScienceDirect

    2018-1-10u2002·u2002The unification of gauge and top Yukawa couplings is an attractive feature of gauge-Higgs unification models in extra-dimensions. This feature is usually considered difficult to obtain based on simple group theory analyses. We reconsider a minimal toy model including the renormalisation group running at one loop.

    Get Price
  • Resolving the Degeneracy in top quark Yukawa coupling with ...

    2020-11-19u2002·u2002Conclusion • Both effective operators and could contribute to Htt and HHtt couplings • We use the information of Higgs pair production to break the degeneracy of these two effective operators in top Yukawa coupling Htt • Sensitivity at the 100 TeV hadron collider is good enough to measure these effective operators individually, by combing single Higgs

    Get Price
  • PHYSICAL REVIEW D 97, 055009 (2018)

    Yukawa couplings of vectorlike quarks the IR fixed point value of the top Yukawa coupling independently points to a multi-TeV range for vectorlike matter and superpartners. Assuming a universal value for all large Yukawa couplings at the grand unified theory scale, the measured top quark mass can be obtained from the IR fixed point for tanβ ≃4.

    Get Price
  • standard model - Technical naturalness of Yukawa couplings ...

    2021-10-5u2002·u200211. Top's Yukawa coupling of order one is technically natural, the much smaller couplings are not natural. One may find this problem discussed under the term 'hierarchy of Yukawa couplings'. The previous paragraph really says that the Standard Model doesn't have any mechanism to explain the smallness of any non-top Yukawa couplings.

    Get Price
  • Probing top-quark couplings indirectly at future Higgs ...

    2018-11-13u2002·u2002Top couplings at e+e colliders Above t t or t tH threshold, top-gauge couplings top-Yukawa couplings can be probed by direct production processes. I e.g. CLIC [Durieux, Perello, Vos, CZ '18] 10 4 10 3 10 2 10 1 100 101 0.00433 0.00678 statistically optimal observables CLIC-like run scenario 500fb 1 at p s= 380GeV 1.5ab 1 at p s= 1:4TeV 3ab ...

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  • Why should we care about the top quark Yukawa coupling ...

    2015-4-15u2002·u2002The U.S. Department of Energy's Office of Scientific and Technical Information

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  • Top-Yukawa e ects on the -function of the strong

    2017-4-10u2002·u2002Yukawa couplings, i.e. all but the top-Yukawa coupling y t, by zero and arrive at a simpli ed model which includes QCD and top-Yukawa e ects as well as the scalar potential: L= L QCD + L y t + L (2.2) with L QCD = 1 4 Ga G a 1 2(1 ˘) (@ Aa )2 + @ [email protected] ca+ g s f [email protected] c aAb cc + X q

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  • Probing [equation]-violating Top-Yukawa Couplings at the ...

    2017-8-31u2002·u2002X.-G. He, Y. Tang, G. Valencia, Interplay between new physics in one-loop Higgs couplings and the top-quark Yukawa coupling. Phys. Rev. D 88, …

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  • New physics effect on the top-Yukawa coupling at ILC ...

    Measurement of the top-Yukawa coupling is important to understand the fermion mass generation mechanism and dynamics of electroweak symmetry breaking. We discuss the top quark anomalous couplings which can be described by higher dimensional operators.

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  • Precision Calculations to Top- and Bottom-Yukawa

    Top- and Bottom-Yukawa Couplings within the SM and BSM Luminita Mihaila 1. Motivation After the end of the LHC run I and the start of the LHC run II, the direct searches for su-persymmetric particles remained unsuccessful, thus increasing the exclusion bounds for the super-symmetric mass scale towards the TeV range.

    Get Price
  • Resolving the Degeneracy in top quark Yukawa coupling

    2020-11-19u2002·u2002Conclusion • Both effective operators and could contribute to Htt and HHtt couplings • We use the information of Higgs pair production to break the degeneracy of these two effective operators in top Yukawa coupling Htt • Sensitivity at the 100 TeV hadron collider is good enough to measure these effective operators individually, by combing single Higgs

    Get Price
  • Signatures of additional top and bottom Yukawa

    2020-6-29u2002·u2002Signatures of additional top and bottom Yukawa couplings at the LHC Tanmoy Modak @ Osaka U. Seminar Phys.Lett.B 776 379-384; Phys.Lett.B 786 212-216;

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  • Optimized Probes of the CP Nature of the Top Quark

    At the LHC it is possible to probe these couplings directly with two of the particles in Equation on-shell (Since m h < 2 m t one cannot probe these couplings with all the three particles on-shell) in top-Higgs associated production processes p p → t h j and p p → t t ¯ h [2,3,4,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23] (The loop ...

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  • Yukawa couplings in the E point of F-theory

    2015-3-10u2002·u2002Yukawa couplings: further enhancement in codim. 3, at the intersection of matter curves Beasley, Heckman, Vafa'08 ... Taken from Leontaris'12 Top Yukawa allowed in GUT models, unlike in type II. Yukawas in F-theory Finding a Yukawa coupling at the level of the elliptic fibration means

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  • Emperically Derived Fermion Higgs Yukawa Couplings

    2017-11-23u2002·u2002III. PROPOSED HIGGS FIELD YUKAWA COUPLINGS In searching for an empirical formulas for the top quark Higgs Yukawa coupling we find y t =1 ↵ f k 1 3 u (10) provides an excellent match to the experimental value. Two puzzling results from the proposed mass formulas (1) were

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  • Probing [equation]-violating Top-Yukawa Couplings at the ...

    2017-8-31u2002·u2002X.-G. He, Y. Tang, G. Valencia, Interplay between new physics in one-loop Higgs couplings and the top-quark Yukawa coupling. Phys. Rev. D 88, …

    Get Price
  • LARGE TOP QUARK YUKAWA COUPLING AND

    2005-3-1u2002·u2002Since the top quark mass is of order weak scale[?], its corresponding Yukawa coupling is of order unity. On the other hand if the VEVs of the Higgs doublets in the theory are comparable, b and τ couplings are much smaller than one. In this paper we build a model that incorporates a large top and small bottom and tau Yukawa couplings.

    Get Price
  • Top-bottom-tau Yukawa coupling unification in the

    2021-9-14u2002·u2002In the MSSM extended by a complete vectorlike family, precise top, bottom and tau Yukawa coupling unification can be achieved assuming SUSY threshold corrections which are typical for comparable superpartner masses. Furthermore, the unification is possible with a large unified coupling, implying that all three fermion masses can be simultaneously close to their IR fixed points. Assuming ...

    Get Price
  • Top-Higgs Yukawa Coupling Measurement at a Linear e

    2017-11-12u2002·u2002accurately measured: mass, width, etc, and indeed its couplings to bosons and fermions. The couplings to the Z and W gauge bosons can be measured from the Higgstrahlung process: Z ! ZH [1] and the fusion processes: WW; ZZ!H[2]. On the other hand, the top quark provides a unique opportunity to measure the Higgs Yukawa coupling to fermions.

    Get Price
  • Unification of gauge and Yukawa couplings - ScienceDirect

    2018-1-10u2002·u2002The unification of gauge and top Yukawa couplings is an attractive feature of gauge-Higgs unification models in extra-dimensions. This feature is usually considered difficult to obtain based on simple group theory analyses. We reconsider a minimal toy model including the renormalisation group running at one loop.

    Get Price
  • Resolving the Degeneracy in top quark Yukawa coupling

    2020-11-19u2002·u2002Conclusion • Both effective operators and could contribute to Htt and HHtt couplings • We use the information of Higgs pair production to break the degeneracy of these two effective operators in top Yukawa coupling Htt • Sensitivity at the 100 TeV hadron collider is good enough to measure these effective operators individually, by combing single Higgs

    Get Price
  • PHYSICAL REVIEW D 97, 055009 (2018)

    Yukawa couplings of vectorlike quarks the IR fixed point value of the top Yukawa coupling independently points to a multi-TeV range for vectorlike matter and superpartners. Assuming a universal value for all large Yukawa couplings at the grand unified theory scale, the measured top quark mass can be obtained from the IR fixed point for tanβ ≃4.

    Get Price
  • standard model - Technical naturalness of Yukawa

    2021-10-5u2002·u200211. Top's Yukawa coupling of order one is technically natural, the much smaller couplings are not natural. One may find this problem discussed under the term 'hierarchy of Yukawa couplings'. The previous paragraph really says that the Standard Model doesn't have any mechanism to explain the smallness of any non-top Yukawa couplings.

    Get Price
  • Probing top-quark couplings indirectly at future Higgs ...

    2018-11-13u2002·u2002Top couplings at e+e colliders Above t t or t tH threshold, top-gauge couplings top-Yukawa couplings can be probed by direct production processes. I e.g. CLIC [Durieux, Perello, Vos, CZ '18] 10 4 10 3 10 2 10 1 100 101 0.00433 0.00678 statistically optimal observables CLIC-like run scenario 500fb 1 at p s= 380GeV 1.5ab 1 at p s= 1:4TeV 3ab ...

    Get Price
  • Probing [equation]-violating Top-Yukawa Couplings at the ...

    2017-8-31u2002·u2002X.-G. He, Y. Tang, G. Valencia, Interplay between new physics in one-loop Higgs couplings and the top-quark Yukawa coupling. Phys. Rev. D 88, …

    Get Price
  • LARGE TOP QUARK YUKAWA COUPLING AND

    2005-3-1u2002·u2002Since the top quark mass is of order weak scale[?], its corresponding Yukawa coupling is of order unity. On the other hand if the VEVs of the Higgs doublets in the theory are comparable, b and τ couplings are much smaller than one. In this paper we build a model that incorporates a large top and small bottom and tau Yukawa couplings.

    Get Price
  • Top-bottom-tau Yukawa coupling unification in the

    2021-9-14u2002·u2002In the MSSM extended by a complete vectorlike family, precise top, bottom and tau Yukawa coupling unification can be achieved assuming SUSY threshold corrections which are typical for comparable superpartner masses. Furthermore, the unification is possible with a large unified coupling, implying that all three fermion masses can be simultaneously close to their IR fixed points. Assuming ...

    Get Price
  • Top-Higgs Yukawa Coupling Measurement at a Linear e

    2017-11-12u2002·u2002accurately measured: mass, width, etc, and indeed its couplings to bosons and fermions. The couplings to the Z and W gauge bosons can be measured from the Higgstrahlung process: Z ! ZH [1] and the fusion processes: WW; ZZ!H[2]. On the other hand, the top quark provides a unique opportunity to measure the Higgs Yukawa coupling to fermions.

    Get Price
  • Unification of gauge and Yukawa couplings - ScienceDirect

    2018-1-10u2002·u2002The unification of gauge and top Yukawa couplings is an attractive feature of gauge-Higgs unification models in extra-dimensions. This feature is usually considered difficult to obtain based on simple group theory analyses. We reconsider a minimal toy model including the renormalisation group running at one loop.

    Get Price
  • Resolving the Degeneracy in top quark Yukawa coupling

    2020-11-19u2002·u2002Conclusion • Both effective operators and could contribute to Htt and HHtt couplings • We use the information of Higgs pair production to break the degeneracy of these two effective operators in top Yukawa coupling Htt • Sensitivity at the 100 TeV hadron collider is good enough to measure these effective operators individually, by combing single Higgs

    Get Price
  • PHYSICAL REVIEW D 97, 055009 (2018)

    Yukawa couplings of vectorlike quarks the IR fixed point value of the top Yukawa coupling independently points to a multi-TeV range for vectorlike matter and superpartners. Assuming a universal value for all large Yukawa couplings at the grand unified theory scale, the measured top quark mass can be obtained from the IR fixed point for tanβ ≃4.

    Get Price
  • standard model - Technical naturalness of Yukawa

    2021-10-5u2002·u200211. Top's Yukawa coupling of order one is technically natural, the much smaller couplings are not natural. One may find this problem discussed under the term 'hierarchy of Yukawa couplings'. The previous paragraph really says that the Standard Model doesn't have any mechanism to explain the smallness of any non-top Yukawa couplings.

    Get Price
  • Probing top-quark couplings indirectly at future Higgs ...

    2018-11-13u2002·u2002Top couplings at e+e colliders Above t t or t tH threshold, top-gauge couplings top-Yukawa couplings can be probed by direct production processes. I e.g. CLIC [Durieux, Perello, Vos, CZ '18] 10 4 10 3 10 2 10 1 100 101 0.00433 0.00678 statistically optimal observables CLIC-like run scenario 500fb 1 at p s= 380GeV 1.5ab 1 at p s= 1:4TeV 3ab ...

    Get Price
  • Probing [equation]-violating Top-Yukawa Couplings at the ...

    2017-8-31u2002·u2002X.-G. He, Y. Tang, G. Valencia, Interplay between new physics in one-loop Higgs couplings and the top-quark Yukawa coupling. Phys. Rev. D 88, …

    Get Price
  • LARGE TOP QUARK YUKAWA COUPLING AND

    2005-3-1u2002·u2002Since the top quark mass is of order weak scale[?], its corresponding Yukawa coupling is of order unity. On the other hand if the VEVs of the Higgs doublets in the theory are comparable, b and τ couplings are much smaller than one. In this paper we build a model that incorporates a large top and small bottom and tau Yukawa couplings.

    Get Price
  • Top-bottom-tau Yukawa coupling unification in the

    2021-9-14u2002·u2002In the MSSM extended by a complete vectorlike family, precise top, bottom and tau Yukawa coupling unification can be achieved assuming SUSY threshold corrections which are typical for comparable superpartner masses. Furthermore, the unification is possible with a large unified coupling, implying that all three fermion masses can be simultaneously close to their IR fixed points. Assuming ...

    Get Price
  • Top-Higgs Yukawa Coupling Measurement at a Linear e

    2017-11-12u2002·u2002accurately measured: mass, width, etc, and indeed its couplings to bosons and fermions. The couplings to the Z and W gauge bosons can be measured from the Higgstrahlung process: Z ! ZH [1] and the fusion processes: WW; ZZ!H[2]. On the other hand, the top quark provides a unique opportunity to measure the Higgs Yukawa coupling to fermions.

    Get Price
  • Unification of gauge and Yukawa couplings - ScienceDirect

    2018-1-10u2002·u2002The unification of gauge and top Yukawa couplings is an attractive feature of gauge-Higgs unification models in extra-dimensions. This feature is usually considered difficult to obtain based on simple group theory analyses. We reconsider a minimal toy model including the renormalisation group running at one loop.

    Get Price
  • Resolving the Degeneracy in top quark Yukawa coupling

    2020-11-19u2002·u2002Conclusion • Both effective operators and could contribute to Htt and HHtt couplings • We use the information of Higgs pair production to break the degeneracy of these two effective operators in top Yukawa coupling Htt • Sensitivity at the 100 TeV hadron collider is good enough to measure these effective operators individually, by combing single Higgs

    Get Price
  • PHYSICAL REVIEW D 97, 055009 (2018)

    Yukawa couplings of vectorlike quarks the IR fixed point value of the top Yukawa coupling independently points to a multi-TeV range for vectorlike matter and superpartners. Assuming a universal value for all large Yukawa couplings at the grand unified theory scale, the measured top quark mass can be obtained from the IR fixed point for tanβ ≃4.

    Get Price
  • standard model - Technical naturalness of Yukawa

    2021-10-5u2002·u200211. Top's Yukawa coupling of order one is technically natural, the much smaller couplings are not natural. One may find this problem discussed under the term 'hierarchy of Yukawa couplings'. The previous paragraph really says that the Standard Model doesn't have any mechanism to explain the smallness of any non-top Yukawa couplings.

    Get Price
  • Probing top-quark couplings indirectly at future Higgs ...

    2018-11-13u2002·u2002Top couplings at e+e colliders Above t t or t tH threshold, top-gauge couplings top-Yukawa couplings can be probed by direct production processes. I e.g. CLIC [Durieux, Perello, Vos, CZ '18] 10 4 10 3 10 2 10 1 100 101 0.00433 0.00678 statistically optimal observables CLIC-like run scenario 500fb 1 at p s= 380GeV 1.5ab 1 at p s= 1:4TeV 3ab ...

    Get Price