How well do we need to measure the Higgs boson mass and self-coupling?

Much of the discussion regarding future measurements of the Higgs boson mass and self-coupling is focussed on how well various collider options can do. In this article we ask a physics-based question of how well do we need colliders to measure these quantities to have an impact on discovery of new physics or an impact in how we understand the role of the Higgs boson in nature. We address the question within the framework of the Standard Model and various beyond the Standard Model scenarios, including supersymmetry and theories of composite Higgs bosons. We conclude that the LHC’s stated ability to measure the Higgs boson to better than 150 MeV will be as good as we will ever need to know the Higgs boson mass in the foreseeable future. On the other hand, we estimate that the self-coupling will likely need to be measured to better than 20% to see a deviation from the Standard Model expectation. This is a challenging target for future collider and upgrade scenarios.

[1]  Andreas Papaefstathiou,et al.  Higgs boson self-coupling measurements using ratios of cross sections , 2013, 1301.3492.

[2]  Jin Min Yang,et al.  Higgs-pair production in littlest Higgs model with T parity , 2007, 0705.3392.

[3]  M. Mühlleitner,et al.  The measurement of the Higgs self-coupling at the LHC: theoretical status , 2012, 1212.5581.

[4]  D. Pappadopulo,et al.  A minimally tuned composite Higgs model from an extra dimension , 2013, 1303.3062.

[5]  I. Masina.  Higgs boson and top quark masses as tests of electroweak vacuum stability , 2012, 1209.0393.

[6]  Matthew J. Dolan,et al.  Higgs self-coupling measurements at the LHC , 2012, 1206.5001.

[7]  Cyril Hugonie,et al.  The Next-to-Minimal Supersymmetric Standard Model , 2009, 0910.1785.

[8]  E. Salvioni,et al.  Higgs low-energy theorem (and its corrections) in composite models , 2012, 1206.7120.

[9]  Ryszard S. Romaniuk,et al.  Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC , 2012 .

[10]  Jin Min Yang,et al.  Pair production of a 125GeV Higgs boson in MSSM and NMSSM at the LHC , 2013, 1301.6437.

[11]  M. Lindner,et al.  Planck scale boundary conditions and the Higgs mass , 2011, Journal of High Energy Physics.

[12]  G. Degrassi,et al.  Higgs mass and vacuum stability in the Standard Model at NNLO , 2012, 1205.6497.

[13]  F. Riva,et al.  SUSY faces its Higgs couplings , 2012, 1212.5240.

[14]  G. Weiglein,et al.  Higher-order corrections to Higgs boson decays in the MSSM with complex parameters , 2011, 1103.1335.

[15]  Pradeep Mitra Ecspe,et al.  REPORT NO , 2001 .

[16]  A. Strumia,et al.  Probing High-Scale and Split Supersymmetry with Higgs Mass Measurements , 2011, 1108.6077.

[17]  J. Wells,et al.  How well do we need to measure Higgs boson couplings , 2012, 1206.3560.

[18]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[19]  M. Peskin.  Comparison of LHC and ILC Capabilities for Higgs Boson Coupling Measurements , 2012, 1207.2516.

[20]  Matthew J. Dolan,et al.  New physics in LHC Higgs boson pair production , 2012, 1210.8166.

[21]  J. Wells.  Lectures on Higgs Boson Physics in the Standard Model and Beyond , 2009, 0909.4541.

[22]  L. Hall,et al.  A natural SUSY Higgs near 125 GeV , 2011, 1112.2703.

[23]  J. Wells,et al.  Dynamics of non-renormalizable electroweak symmetry breaking , 2007, 0711.2511.

[24]  Gibson,et al.  ATLAS detector and physics performance : Technical Design Report, 1 , 1999 .

[25]  L. Shang,et al.  Pair production of a 125 GeV Higgs boson in MSSM and NMSSM at the ILC , 2013, 1306.0279.

[26]  Veronica Sanz,et al.  Scale-invariant resonance tagging in multijet events and new physics in Higgs pair production , 2013, 1303.6636.

[27]  James Unwin,et al.  Precision unification in λSUSY with a 125GeV Higgs , 2012, 1207.1435.

[28]  Marcel Stanitzki,et al.  Physics and Detectors at CLIC: CLIC Conceptual Design Report , 2012 .