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Title: New physics scale from Higgs observables with effective dimension-6 operators

Abstract

No matter what the scale of new physics is, deviations from the Standard Model for the Higgs observables will indicate the existence of such a scale. We consider effective six dimensional operators, and their effects on the Higgs productions and decays to estimate this new scale. We analyze and identify the parameter space consistent with known properties of the Higgs boson using recent Run II results from ATLAS and CMS experiments corresponding to $$\sim$$ 37 fb$$^{-1}$$ of data. We then calculate the $$\bar{t} t h$$ productions , as well as double Higgs production at the LHC using the effective couplings, and show that these can be much different than those predicted by the Standard Model, for a wide region of allowed parameters space. These predictions can be tested in the current or the future runs of the LHC. We find that the data are consistent with the existence of a new physics scale as low as 500 GeV for a significant region of parameter space of this six-dimensional couplings with these new physics effects at the LHC. In conclusion, we also find that for some region of the parameter space, di-Higgs production can be much larger than that predicted by the Standard Model giving rise to the prospect of its observation even in the current run II of the LHC.

Authors:
ORCiD logo [1]; ORCiD logo [2]
  1. Oklahoma State Univ., Stillwater, OK (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Oklahoma State Univ., Stillwater, OK (United States); Rice Univ., Houston, TX (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1456295
Alternate Identifier(s):
OSTI ID: 1495367
Report Number(s):
OSU-HEP-17-05; arXiv:1710.00619; FERMILAB-PUB-17-690-T
Journal ID: ISSN 0370-2693; 1628122
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 783; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Higgs; LHC; Dimension-6

Citation Formats

Jana, Sudip, and Nandi, S. New physics scale from Higgs observables with effective dimension-6 operators. United States: N. p., 2018. Web. doi:10.1016/j.physletb.2018.06.038.
Jana, Sudip, & Nandi, S. New physics scale from Higgs observables with effective dimension-6 operators. United States. doi:10.1016/j.physletb.2018.06.038.
Jana, Sudip, and Nandi, S. Thu . "New physics scale from Higgs observables with effective dimension-6 operators". United States. doi:10.1016/j.physletb.2018.06.038.
@article{osti_1456295,
title = {New physics scale from Higgs observables with effective dimension-6 operators},
author = {Jana, Sudip and Nandi, S.},
abstractNote = {No matter what the scale of new physics is, deviations from the Standard Model for the Higgs observables will indicate the existence of such a scale. We consider effective six dimensional operators, and their effects on the Higgs productions and decays to estimate this new scale. We analyze and identify the parameter space consistent with known properties of the Higgs boson using recent Run II results from ATLAS and CMS experiments corresponding to $\sim$ 37 fb$^{-1}$ of data. We then calculate the $\bar{t} t h$ productions , as well as double Higgs production at the LHC using the effective couplings, and show that these can be much different than those predicted by the Standard Model, for a wide region of allowed parameters space. These predictions can be tested in the current or the future runs of the LHC. We find that the data are consistent with the existence of a new physics scale as low as 500 GeV for a significant region of parameter space of this six-dimensional couplings with these new physics effects at the LHC. In conclusion, we also find that for some region of the parameter space, di-Higgs production can be much larger than that predicted by the Standard Model giving rise to the prospect of its observation even in the current run II of the LHC.},
doi = {10.1016/j.physletb.2018.06.038},
journal = {Physics Letters. Section B},
number = C,
volume = 783,
place = {United States},
year = {2018},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.physletb.2018.06.038

Citation Metrics:
Cited by: 5 works
Citation information provided by
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