Effective-field-theory approach to top-quark production and decay

Zhang, Cen; Willenbrock, Scott

doi:10.1103/PhysRevD.83.034006

Title: Effective-field-theory approach to top-quark production and decay

Full Record
Other Related Research

Authors:: Zhang, Cen; Willenbrock, Scott

Publication Date:: Mon Feb 07 00:00:00 EST 2011

Sponsoring Org.:: USDOE

OSTI Identifier:: 1101517

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Physical Review D

Additional Journal Information:: Journal Volume: 83; Journal Issue: 3; Journal ID: ISSN 1550-7998

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Citation Formats


                    Zhang, Cen, and Willenbrock, Scott. Effective-field-theory approach to top-quark production and decay.  United States: N. p., 2011. 
Web.  doi:10.1103/PhysRevD.83.034006.

Copy to clipboard


                    Zhang, Cen, & Willenbrock, Scott. Effective-field-theory approach to top-quark production and decay.  United States.  https://doi.org/10.1103/PhysRevD.83.034006

Copy to clipboard


                    Zhang, Cen, and Willenbrock, Scott. Mon .  
"Effective-field-theory approach to top-quark production and decay".  United States.  https://doi.org/10.1103/PhysRevD.83.034006.

Copy to clipboard


                    
@article{osti_1101517,

  title        = {Effective-field-theory approach to top-quark production and decay},

  author       = {Zhang, Cen and Willenbrock, Scott},

  abstractNote = {},

  doi          = {10.1103/PhysRevD.83.034006},

  journal      = {Physical Review D},

  number       = 3,

  volume       = 83,

  place        = {United States},

  year         = {Mon Feb 07 00:00:00 EST 2011},

  month        = {Mon Feb 07 00:00:00 EST 2011}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Publisher's Version of Record
https://doi.org/10.1103/PhysRevD.83.034006

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 146 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Effective-field-theory approach to top-quark production and decay

Journal Article Cen, Zhang ; Willenbrock, Scott - Physical Review. D, Particles Fields

We discuss new physics in top-quark interactions, using an effective-field-theory approach. We consider top-quark decay, single top production, and top-quark pair production. We identify 15 dimension-six operators that contribute to these processes, and we compute the deviation from the standard model induced by these operators. The results provide a systematic way of searching for (or obtaining bounds on) physics beyond the standard model.
https://doi.org/10.1103/PHYSREVD.83.034006
Scalar production and decay to top quarks including interference effects at NLO in QCD in an EFT approach

Journal Article Franzosi, Diogo Buarque ; Vryonidou, Eleni ; Zhang, Cen - Journal of High Energy Physics (Online)

Scalar and pseudo-scalar resonances decaying to top quarks are common predictions in several scenarios beyond the standard model (SM) and are extensively searched for by LHC experiments. Challenges on the experimental side require optimising the strategy based on accurate predictions. Firstly, QCD corrections are known to be large both for the SM QCD background and for the pure signal scalar production. Secondly, leading order and approximate next-to-leading order (NLO) calculations indicate that the interference between signal and background is large and drastically changes the lineshape of the signal, from a simple peak to a peak-dip structure. Therefore, a robust predictionmore »« less
Cited by 12
https://doi.org/10.1007/JHEP10(2017)096

Full Text Available
Top quark decay at next-to-leading order in the standard model effective field theory

Journal Article Boughezal, Radja ; Chen, Chien-Yi ; Petriello, Frank ; ... - Physical Review D

We consider top quark decay in the Standard Model Effective Field Theory (SMEFT). We present a calculation of the total decay width and the W-boson helicity fractions at next-to-leading order (NLO) in SMEFT. Our result includes the complete set of contributing four-fermion operators in addition to QCD dipole operators and bottom-mass suppressed effects. We show that operators that first appear at NLO in the SMEFT can be bounded by the current data as well as future data from both a high-luminosity LHC and a potential e⁺e^– collider, demonstrating the importance of going beyond leading order when studying the SMEFT. Wemore »« less
Cited by 14
https://doi.org/10.1103/PhysRevD.100.056023
Search for physics beyond the standard model in top quark production with additional leptons in the context of effective field theory

Journal Article Hayrapetyan, A. ; Tumasyan, A. ; Adam, W. ; ... - Journal of High Energy Physics (Online)

A search for new physics in top quark production with additional final-state leptons is performed using data collected by the CMS experiment in proton-proton collisions atmore »« less
https://doi.org/10.1007/jhep12(2023)068

Full Text Available
Probing effective field theory operators in the associated production of top quarks with a Z boson in multilepton final states at $$\sqrt{s}$$ = 13 TeV

Journal Article Tonon, N. ; Aarup Petersen, H. ; Aldaya Martin, M. ; ... - Journal of High Energy Physics (Online)

A search for new top quark interactions is performed within the framework of an effective field theory using the associated production of either one or two top quarks with a Z boson in multilepton final states. The data sample corresponds to an integrated luminosity of 138 fb^-1 of proton-proton collisions at √s = 13 TeV collected by the CMS experiment at the LHC. Five dimension-six operators modifying the electroweak interactions of the top quark are considered. Novel machine-learning techniques are used to enhance the sensitivity to effects arising from these operators. Distributions used for the signal extraction are parameterized inmore »« less
https://doi.org/10.1007/jhep12(2021)083

Full Text Available

Similar Records