Search for new physics in top quark production with additional leptons in proton-proton collisions at $\sqrt{s} = $ 13 TeV using effective field theory

Collaboration, The Cms; Sirunyan, Albert M; Tumasyan, Armen; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko; Escalante Del Valle, Alberto; Fruehwirth, Rudolf; Jeitler, Manfred; Krammer, Natascha

doi:10.1007/JHEP03(2021)095

Search for new physics in top quark production with additional leptons in proton-proton collisions at $\sqrt{s} =$ 13 TeV using effective field theory

CMS

Collaboration

Dec 7, 2020

55 pages

Published in:

JHEP 03 (2021) 095

Published: Mar 9, 2021

e-Print:

2012.04120 [hep-ex]

DOI:

10.1007/JHEP03(2021)095

Report number:

CMS-TOP-19-001,
CERN-EP-2020-211

Experiments:

CERN-LHC-CMS

View in:

reference search85 citations

Citations per year

Abstract: (Springer)

Events containing one or more top quarks produced with additional prompt leptons are used to search for new physics within the framework of an effective field theory (EFT). The data correspond to an integrated luminosity of 41.5 fb

^{−1}

of proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC, collected by the CMS experiment in 2017. The selected events are required to have either two leptons with the same charge or more than two leptons; jets, including identified bottom quark jets, are also required, and the selected events are divided into categories based on the multiplicities of these objects. Sixteen dimension-six operators that can affect processes involving top quarks produced with additional charged leptons are considered in this analysis. Constructed to target EFT effects directly, the analysis applies a novel approach in which the observed yields are parameterized in terms of the Wilson coefficients (WCs) of the EFT operators. A simultaneous fit of the 16 WCs to the data is performed and two standard deviation confidence intervals for the WCs are extracted; the standard model expectations for the WC values are within these intervals for all of the WCs probed.[graphic not available: see fulltext]

Note:

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables, including additional supplementary figures, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-19-001 (CMS Public Pages)

Beyond Standard Model
Hadron-Hadron scattering (experiments)
Top physics
p p: colliding beams
new physics: search for
p p: scattering
top: single production
top: pair production
quark: jet
jet: bottom

References(63)

Figures(27)

[1]

Dark Matter Candidates from Particle Physics and Methods of Detection

Jonathan L. Feng
(
- UC, Irvine
)

- Ann.Rev.Astron.Astrophys. 48 (2010) 495-545
•
e-Print:
- 1003.0904
•
DOI:
- 10.1146/annurev-astro-082708-101659

[2]

Dark Matter Searches with Astroparticle Data

Troy A. Porter
(
- Stanford U., HEPL
)
,
Robert P. Johnson
(
- UC, Santa Cruz
)
,
Peter W. Graham
(
- Stanford U., ITP
)

- Ann.Rev.Astron.Astrophys. 49 (2011) 155-194
•
e-Print:
- 1104.2836
•
DOI:
- 10.1146/annurev-astro-081710-102528

[3]

The Cosmological Constant and Dark Energy

P.J.E. Peebles
(
- Princeton U.
)
,
Bharat Ratra
(
- Kansas State U.
)

- Rev.Mod.Phys. 75 (2003) 559-606,
•
e-Print:
- astro-ph/0207347
•
DOI:
- 10.1103/RevModPhys.75.559

[4]

Review of Particle Physics

et al.

- PTEP 2020 (2020) 8, 083C01
•
DOI:
- 10.1093/ptep/ptaa104

[5]

Dynamical Breaking of Supersymmetry

Edward Witten
(
- Princeton U.
)

- Nucl.Phys.B 188 (1981) 513,
- IN *FERRARA, S. (ED.): SUPERSYMMETRY, VOL. 1*, 443-484. (NUCL. PHYS. B188 (1981) 513-554) AND PREPRINT - WITTEN, E. (REC.JUL.81) 72 P. (SEE BOOK INDEX)
•
DOI:
- 10.1016/0550-3213(81)90006-7