Search for the associated Higgs boson production with top quarks in CMS
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
A precise determination of the Yukawa coupling to top quarks is crucial for the characterization of the recently discovered Higgs boson. A direct measurement of this coupling can be provided only by those processes where the Higgs boson is produced in association with top quarks. In the Standard Model (SM), the production of the Higgs boson together with a top-antitop pair (tt‾H) has the largest cross section, followed by the production with a single top quark (tH), with roughly one order of magnitude smaller rate. As of summer 2014, the CMS experiment at LHC has performed searches for either processes using the full Run-I data set in a variety of decay channels of the Higgs boson, namely H→WW⁎,ZZ⁎,τ+τ−,bb‾,γγ for the tt‾H production, and H→γγ for tH. Due to the small cross section, the sensitivity to the SM tH production is still far from being achieved, yet stringent constraints can be already set for non-SM couplings. Conversely, the combination of the various tt‾H searches has already attained sensitivity to measure a SM-like signal, providing a best-fit value of the signal strength modifier μˆ=2.76−0.92+1.05, compatible with the SM expectation at the 2σ level. An improved tt‾H search in the H→γγ channel using the full 7 and 8 TeV data set, as well as a new tt‾H, H→bb‾ analysis using a matrix element technique, are here presented for the first time.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it