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Precision Measurements after the Higgs Discovery

Precision Measurements after the Higgs Discovery. M.V. Chizhov Sofia University, Bulgaria and JINR, Russia. July 4, 2012. Is it the Higgs, or isn’t Higgs?. Mean Lifetime and Branching Ratios of the Higgs Boson. M. A. Shifman, A. I. Vainshtein, M . B. Voloshin, and V. I. Zakharov ,

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Precision Measurements after the Higgs Discovery

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  1. Precision Measurements after the Higgs Discovery M.V. Chizhov Sofia University, Bulgaria and JINR, Russia

  2. July 4, 2012

  3. Is it the Higgs, or isn’t Higgs?

  4. Mean Lifetime and Branching Ratios of the Higgs Boson M. A. Shifman, A. I. Vainshtein, M. B. Voloshin, and V. I. Zakharov, Sov. J. Nucl. Phys. 30(1979) 711 g g t t t g g

  5. SM Higgs Production at the LHC https://twiki.cern.ch/twiki/bin/view/LHCPhysics/CrossSections s[pb] 19.27 1.578 0.7046 0.4153 0.1293 125 GeV LHC in 2012 at record luminosity (7 × 1033cm-2s-1) and energy (8 TeV) was producing SM Higgs bosons (MH = 125 GeV) at a rate ~𝟓6𝟎/hr

  6. Higgs Boson Signal from the Last ATLAS Data Phys. Lett. B 726 (2013) 88 (July 4, 2013) (Nov 28,2013) ATLAS-CONF-2013-014 ATLAS-CONF-2013-108

  7. Higgs Coupling Constants from ATLAS and CMS Results

  8. Higgs Spin/Parity at Tevatron J. Ellis, D. S. Hwang, V. Sanz and T. You, JHEP 1211(2012) 134; D0 Note 6387-CONF (2013), D0 Note 6406-CONF (2013) Idea from D. J. Miller, S. Y. Choi, B. Eberle, M. M. Muhlleitner and P. M. Zerwas, Phys. Lett. B505 (2001) 149. Discriminating power is provided by the threshold behaviour of the cross section: s-wave for 0+s ~ b, p-wave for 0-s~ b3, d-wave for 2+s~ b5.

  9. Results

  10. Spin and Parity of New Boson: Evidence for 0+ Nature of the Higgs Phys. Rev. D 89 (2014) 09207 arXiv:1312.5353 Phys. Lett. B 726 (2013) 120 The orange (blue) band represents the 1σ, 2σ, and 3σ around the median expected value for the SM Higgs boson hypothesis(alternative hypothesis). The black point represents the observed value. The hypotheses of a pseudoscalarand all tested spin-one boson hypotheses are excluded at a 99,9% confidence level or higher. All tested spin-two boson hypotheses are excluded at a 95% confidence level or higher. Expected (blue triangles/dashed lines) and observed (black circles/ solid lines) confidence level CLs for alternative spinparityhypotheses assuming a 0+ signal.

  11. Universal Fit (LHC+TeVatron) P.P. Giardino, K. Kannike, I. Masina, M. Raidal and A. Strumia, arXiv:1303.3570 [hep-ph]

  12. There is no other Higgs

  13. The Nobel Prize in Physics 2013 was awarded jointly to François Englertand Peter W. Higgs "for the theoretical discovery of a mechanism that contributes to our understanding of the origin of mass of subatomic particles, and which recently was confirmed through the discovery of the predicted fundamental particle, by the ATLAS and CMS experiments at CERN's Large Hadron Collider" „за теоретичнотооткритие на механизма, допринасящ за разбирането на произхода на масата на субатомните частици и който наскоро беше потвърден чрез откриването на предсказаната фундаментална частица от ATLAS и CMS експериментите на Големия Адронен Колайдер в ЦЕРН“

  14. Elementary Particles and Interactions of the Standard Model

  15. Standard Model Extrapolation to the Planck Energy D. Buttazzo, G. Degrassi, P.P. Giardino,G.F. Giudicе, F. Sala, A. Salvio,A.Strumia arXiv:1307.3536[hep-ph] Figure from Giardino’s slides

  16. MW and mt precise measurements ATLAS, CDF, CMS and D0 Collaborations arXiv:1403.4427 [hep-ex] CDF and D0 Collaborations, Phys. Rev. D 88 (2013) 052018 (arXiv:1307.7627) See, however, CMS-PAS-TOP-14-001: mtop = 172.22 ± 0.73 GeV

  17. SM predictions versus measurements Effect of Higgs Mass Knowledge http://gfitter.desy.de

  18. The Latest Measurements of the Higgs Properties No yet combination of CMS and ATLAS results with the full run 1 dataset: scheduled for Fall 2014

  19. Tight Higgs Width Constraint! CMS: arXiv:1405.3455 Impossible directly due to experimental resolution, but using idea by FabrizioCaola and Kirill Melnikov, Phys. Rev. D 88 (2013) 054024 Assuming presence of the SM interactions only:

  20. No evidence yet for H  bb decay Tevatron combination: Phys. Rev. D 88, 052014 (2013) ATLAS-CONF-2013-079 CMS PAS HIG-13-012 m= 1.6 ± 0.7

  21. No H  Zg decay signal yet

  22. No H  mm decay signal yet CMS PAS HIG-13-007 ATLAS-CONF-2013-010 CMS also has Upper Limit on Br(H→ee) < 0.0017 (SM prediction is ~ 5*10-9)

  23. Precise Higgs-Boson Mass Measurements Shown at LHCP last week for first time; paper to be submitted shortly CMS-PAS-HIG-13-005 CMS: Phys. Rev. D 89 (2014) 09207 CMS-PAS-HIG-13-001 (March 2013) Considerable reduction of systematic uncertainties on individual measurements

  24. Higgs Couplings Measurements CMS-PAS-HIG-13-005 ATLAS-CONF-2014-009

  25. Top-Pair Production at LHC Strong collaborationbetweentheoretical and experimentalresearchers

  26. Single Top Production at Tevatron

  27. Single-Top Production at LHC t-channel tW s-channel

  28. Victor E. Bazterra

  29. Victor E. Bazterra

  30. FR = -0.009 ± 0.006(stat.) ± 0.020(syst.),

  31. “Stairway to Heaven”

  32. HeavyFlavour Physics will be discussed in Augusto Ceccucci talk

  33. Precision measurement of tau lepton mass by BESIII arXiv:1405.1076 [hep-ex]

  34. MEG +→ e +  Phys. Rev. Lett. 110(2013) 201801; arXiv:1303.0754 [hep-ex] BR(+→ e+) < 5.7  10-13 MEG 2013

  35. Peculiarity of Neutrino Physics t c b t s u m d e n?

  36. Mixing matrices in quark and lepton sectors Cabibbo-Kobayashi-Maskawa Wolfenstein parameterization Pontecorvo-Maki-Nakagawa-Sakata P. F. Harrison, D. H. Perkins and W. G. Scott, Phys. Lett. B 530 (2002) 167

  37. Elementary Particles and Interactions of the Standard Theory n3 n1 n2 Lepton sector is least known: +9 parameters(5 known, 4 unknown) Neither electron neutrino, nor muon and tau neutrinos are real particles!

  38. Oscillations • The two necessary conditions for neutrino oscillations: • UPMNS is non-identity matrix: • the flavourstates are different from the mass states • m1 m2  m3: • non-degeneracy of the mass states Oscillations!

  39. First indications of non-zero Ue3 and negative CP-phase d from T2K →e Appearance! Phys.Rev.Lett. 107 (2011) 041801 arXiv:1106.2822 [hep-ex] PRL112(2014) 061802 new results arXiv:1405.3871 The T2K beam has restarted, including antineutrinotest data.

  40. Ue3 = sin 13e-i e →e Disappearance

  41. Daya Bay sin2 213 fit from rate and energy spectra Phys.Rev.Lett.112(2014) 061801e-Print: arXiv:1310.6732[hep-ex] Neutrino 2014

  42. How burns the reactor?

  43. How burns the Sun? CNO-cycle <1% energy production 3 ν species pp-cycle >99% energy production 5 ν species Neutrinos are produced in severalreactions in bothcycles

  44. Solar Neutrinos: the predictedspectrum ,Borexino 50

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