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Probing electroweak precision physics via boosted Higgs-strahlung at the LHC.

Banerjee, Shankha and Englert, Christoph and Gupta, Rick S. and Spannowsky, Michael (2018) 'Probing electroweak precision physics via boosted Higgs-strahlung at the LHC.', Physical review D., 98 (9). 095012.


We study the process pp → Zðlþl−Þhðbb¯Þ in the standard model effective field theory (SMEFT) at high energies using subjet techniques to reconstruct the Higgs boson. We show that at high energies this process probes four directions in the dimension-6 EFT space, namely the operators that contribute to the four contact interactions, hZμf¯ γμf, where f ¼ uL; uR; dL and dR. These four directions are, however, already constrained by the Z-pole and diboson measurements at LEP. We show that by utilizing the energy growth of this process in the SMEFT and the accuracy that can be achieved by using subjet techniques at the High Luminosity LHC, one can obtain bounds on these operators that are an order of magnitude better than existing LEP bounds.

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Publisher statement:Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Date accepted:26 July 2018
Date deposited:20 November 2018
Date of first online publication:14 November 2018
Date first made open access:20 November 2018

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