SEARCH FOR STANDARD MODEL HIGGS BOSON AT LEP WITH THE DELPHI DETECTOR

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 810-812
Author(s):  
◽  
JAVIER FERNANDEZ
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Standard Model Higgs Boson ◽  
Centre Of Mass ◽  
Confidence Levels ◽  
Delphi Detector ◽  
The Standard Model ◽  
Delphi Experiment

Search for the Higgs boson of the Standard Model have been performed using the data collected by the DELPHI experiment at LEP in 2000 corresponding to centre-of-mass energies up to 209 GeV. These results are used, in combination with our results from previous years, to obtain preliminary confidence levels on the existence of an Standard Model Higgs boson with a mass in the range [105-115] GeV /c2.

scholarly journals Searches for MSSM Higgs Bosons with the DELPHI Detector up to $\sqrt{s} = 209~{\rm GeV}$

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 813-815
Author(s):  
◽  
MARCEL STANITZKI
Keyword(s):  
Higgs Boson ◽  
Branching Ratio ◽  
Mass Range ◽  
Higgs Bosons ◽  
Neutral Higgs Boson ◽  
Centre Of Mass ◽  
Confidence Levels ◽  
Delphi Detector ◽  
Delphi Experiment ◽  
Invisible Decays

Searches for hA pair production and hZ production have been performed. Special emphasis has been put on searches, in which the Higgs can decay invisibly into neutralinos. The data collected by the DELPHI experiment at centre-of-mass energies between 191.6 and 201.7 Gev for the year 1999 and between 201.7 and 209.0 Gev for the ongoing data taking in 2000 has been used. These analyses are used, in combination with our results at lower energies, to set 95% confidence levels on the existence of a light neutral Higgs Boson h and a neutral pseudoscalar Higgs Boson A in a mass range of 85-115 GeV/c 2. Combining the searches for visible and invisible Higgs decays allows to obtain 95% confidence levels on the existance of h independent of the branching ratio into invisible decays, if the visible decays are taken to be the SM ones. The MSSM parameter space excluded by these searches has been determined.

scholarly journals Search for π0 decays to invisible particles

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
E. Cortina Gil ◽  
◽  
A. Kleimenova ◽  
E. Minucci ◽  
S. Padolski ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Confidence Level ◽  
Branching Ratio ◽  
Standard Model Higgs Boson ◽  
Scalar Mixing ◽  
Upper Limit ◽  
Upper Limits ◽  
The Standard Model ◽  
Model Independent

Abstract The NA62 experiment at the CERN SPS reports a study of a sample of 4 × 109 tagged π0 mesons from K+ → π+π0(γ), searching for the decay of the π0 to invisible particles. No signal is observed in excess of the expected background fluctuations. An upper limit of 4.4 × 10−9 is set on the branching ratio at 90% confidence level, improving on previous results by a factor of 60. This result can also be interpreted as a model- independent upper limit on the branching ratio for the decay K+ → π+X, where X is a particle escaping detection with mass in the range 0.110–0.155 GeV/c2 and rest lifetime greater than 100 ps. Model-dependent upper limits are obtained assuming X to be an axion-like particle with dominant fermion couplings or a dark scalar mixing with the Standard Model Higgs boson.

scholarly journals A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector

2021 ◽  
Vol 812 ◽  
pp. 135980
Author(s):  
G. Aad ◽  
B. Abbott ◽  
D.C. Abbott ◽  
A. Abed Abud ◽  
K. Abeling ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Atlas Detector ◽  
Standard Model Higgs Boson ◽  
The Standard Model

scholarly journals Search for the Standard Model Higgs boson in e+e− collisions at up to 202 GeV

2001 ◽  
Vol 508 (3-4) ◽  
pp. 225-236 ◽  
Author(s):  
M. Acciarri ◽  
P. Achard ◽  
O. Adriani ◽  
M. Aguilar-Benitez ◽  
J. Alcaraz ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Standard Model Higgs Boson ◽  
The Standard Model

scholarly journals Production and decay of the Standard Model Higgs boson at LEP200

1994 ◽  
Vol 63 (3) ◽  
pp. 417-425 ◽  
Author(s):  
Eilam Gross ◽  
Bernd A. Kniehl ◽  
Gustavo Wolf
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Standard Model Higgs Boson ◽  
The Standard Model

scholarly journals Impersonating the Standard Model Higgs boson: alignment without decoupling

2014 ◽  
Vol 2014 (4) ◽  
Author(s):  
Marcela Carena ◽  
Ian Low ◽  
Nausheen R. Shah ◽  
Carlos E. M. Wagner
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Standard Model Higgs Boson ◽  
The Standard Model

scholarly journals Search for the standard model Higgs boson in e+e− interactions at

1997 ◽  
Vol 411 (3-4) ◽  
pp. 373-386 ◽  
Author(s):  
M Acciarri ◽  
O Adriani ◽  
M Aguilar-Benitez ◽  
S Ahlen ◽  
J Alcaraz ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Standard Model Higgs Boson ◽  
The Standard Model

scholarly journals Search for Heavy Higgs Bosons in Fermionic Decay Channels with CMS

2018 ◽  
Vol 46 ◽  
pp. 1860058
Author(s):  
Ye Chen
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Confidence Level ◽  
Higgs Bosons ◽  
Final States ◽  
Centre Of Mass ◽  
Decay Channels ◽  
Upper Limits ◽  
The Standard Model ◽  
Cms Detector

Latest results of searches for heavy Higgs bosons in fermionic final states are presented using the CMS detector at the LHC. Results are based on pp collision data collected at centre-of-mass energies of 8 and 13 TeV which have been interpreted according to different extensions of the Standard Model such as MSSM, 2HDM, and NMSSM. These searches look for evidence of other scalar or pseudoscalar bosons, in addition to the observed SM-like 125 GeV Higgs boson, and set 95% confidence level upper limits in fermionic final states and benchmark models explored. The talk reviews briefly the major results obtained by the CMS Collaboration during Run I, and presents the most recent searches performed during Run II.

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