Search for a Higgs Boson in the Diphoton Final State in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math>Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>1.96</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:math>

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doi:10.1103/physrevlett.108.011801

Cited by 10 publications

(9 citation statements)

References 45 publications

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“…These results are connected to the leptonic decay of the weak vector bosons and the presence of smaller background compared to this search. And it is more sensitive than CDF's ttH [141] and similar to CDF's H → γγ [142] searches, which have an expected (observed) limit of 12.6 (20.5) and 9.9 (17.0) for a 125 GeV/c 2 Higgs boson, respectively.…”

Section: Discussionmentioning

confidence: 71%

Search for the Higgs Boson in the All-Hadronic Final State Using the CDF II Detector

Devoto

2013

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This thesis reports the result of a search for the Standard Model Higgs boson in events containing four reconstructed jets associated with quarks. For masses below 135 GeV/c 2 , the Higgs boson decays to bottom-antibottom quark pairs are dominant and result primarily in two hadronic jets. An additional two jets can be produced in the hadronic decay of a W or Z boson produced in association with the Higgs boson, or from the incoming quarks that produced the Higgs boson through the vector boson fusion process. The search is performed using a sample of √ s = 1.96 TeV proton-antiproton collisions corresponding to an integrated luminosity of 9.45 fb −1 recorded by the CDF II detector. The data are in agreement with the background model and 95% credibility level upper limits on Higgs boson production are set as a function of the Higgs boson mass. The median expected (observed) limit for a 125 GeV/c 2 Higgs boson is 11.0 (9.0) times the predicted standard model rate.viii

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Section: Discussionmentioning

confidence: 71%

Search for the Higgs Boson in the All-Hadronic Final State Using the CDF II Detector

Devoto

2013

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“…We chose different sets of values for the masses of the new neutral and charged scalar particles; the scenarios we consider are shown in table 2. The new scalar masses are taken to be of the order of 10 2 GeV [48,49]. In the framework of 2HDM and under certain assumptions on its dominant decays, the charged scalar mass, m H + , is excluded to be below 85 GeV by LEP data [50].…”

Section: Resultsmentioning

confidence: 99%

The top right coupling in the aligned two-Higgs-doublet model

Ayala

González-Sprinberg

Martı́nez

2017

J. High Energ. Phys.

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We compute the right top quark coupling in the aligned two-Higgs-doublet model. In the Standard Model the real part of this coupling is dominated by QCDgluon-exchange diagram, but the imaginary part, instead, is purely electroweak at one loop. Within this model we show that values for the imaginary part of the coupling up to one order of magnitude larger than the electroweak prediction can be obtained. For the real part of the electroweak contribution we find that it can be up to three orders of magnitude larger than the standard model one. We also present detailed results of the one loop analytical computation.

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“…Though the experimental search for these decays is challenging due to their small branching ratios, the abundance of Z bosons produced in high-energy hadron collisions at CDF [15] (about 4 times the number of Z bosons produced at LEP [16]) allows an improvement of the existing limits. The intensive search for the SM Higgs boson in the diphoton decay mode [17] has led to dedicated data analysis techniques that can be directly applied to Z → π 0 γ, Z → γγ, and Z → π 0 π 0 searches. No limits on the branching ratios of these decay modes from experiments in hadron collisions have been reported to date.…”

mentioning

confidence: 99%

“…Events having two isolated EM showers with no associated tracks are selected by a three-level on-line eventselection system (trigger) that requires an isolated cluster of energy deposited in the EM calorimeter with trans-verse energy E T > 25 GeV [24]. The trigger efficiency for events accepted into the final sample is determined from simulated events and found to be (99.8 ± 1.0)% [17].…”

mentioning

confidence: 99%

“…A neural network (NN) technique is used to reconstruct the two highest-E T photon candidates in the event with E T > 15 GeV/c in the fiducial region of the central EM calorimeter (|η| < 1.05). This selection was developed in the SM H → γγ analysis at CDF [17]. The NN selection is optimized for the identification of high-E T central photons and the rejection of the dominant background from jets.…”

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confidence: 99%

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First Search for ExoticZBoson Decays into Photons and Neutral Pions in Hadron Collisions

Aaltonen¹,

Amerio²,

Amidei³

et al. 2014

Phys. Rev. Lett.

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A search for forbidden and exotic Z boson decays in the diphoton mass spectrum is presented for the first time in hadron collisions, based on data corresponding to 10.0 fb(-1) of integrated luminosity from proton-antiproton collisions at √s = 1.96 TeV collected by the CDF experiment. No evidence of signal is observed, and 95% credibility level Bayesian upper limits are set on the branching ratios of decays of the Z boson to a photon and neutral pion (which is detected as a photon), a pair of photons, and a pair of neutral pions. The observed branching ratio limits are 2.01 × 10(-5) for Z → π(0)γ, 1.46 × 10(-5) for Z → γγ, and 1.52 × 10(-5) for Z → π(0)π(0). The Z → π(0)γ and Z → γγ limits improve the most stringent results from other experiments by factors of 2.6 and 3.6, respectively. The Z → π(0)π(0) branching ratio limit is the first experimental result on this decay.

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Search for a Higgs Boson in the Diphoton Final State inpp¯Collisions ats=1.96 TeV

Cited by 10 publications

References 45 publications

Search for the Higgs Boson in the All-Hadronic Final State Using the CDF II Detector

Search for the Higgs Boson in the All-Hadronic Final State Using the CDF II Detector

The top right coupling in the aligned two-Higgs-doublet model

First Search for ExoticZBoson Decays into Photons and Neutral Pions in Hadron Collisions

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