Changing patterns in electroweak precision fits with new color-charged states: Oblique corrections and the 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>W</mml:mi></mml:math>
-boson mass

Carpenter, Linda M.; Murphy, Timothy J.; Smylie, Matthew J.

doi:10.1103/physrevd.106.055005

Cited by 16 publications

(3 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other sextet models could contain fields with higher SU(2) L representations and would present even more rich phenomenology. We take as inspiration several models, both renormalizable and effective, of color octets with non-trivial SU(2) L charge [63][64][65]. These states can be fundamentals, adjoints, or even higher multiplets of SU(2) L [8].…”

Section: Discussionmentioning

confidence: 99%

“…These multiplets contain charged and neutral states and may have various new production modes and subsequently undergo interesting cascade decays [66]. New color-charged states of this class can also have measurable effects on the electroweak precision observables [65]. An immediate possibility is therefore to extend our study of color sextets to include non-trivial SU(2) L charges and map out some of the most interesting phenomenological consequences.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Leptonic signatures of color-sextet scalars

2022

Self Cite

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Leptonic signatures of color-sextet scalars

2022

Self Cite

View full text Add to dashboard Cite

“…with 𝜎 𝑎 (at least proportional to) the generators of the fundamental representation of SU(2) L such that 𝑎 is a weak adjoint index and 𝑖, 𝑗 are fundamental indices (see Table I and following for index conventions). Similarly, the biadjoint field with SM quantum numbers (8, 3, 0) has only been studied, to our knowledge, in the context of electroweak oblique corrections [16]. Within the LEX-EFT framework, such a field may couple to 𝑊 𝜇𝜈 𝐺 𝜇𝜈 through the dimension-five operator…”

Section: A Example: a Catalog Of Exotic Scalars In The Diboson Portalmentioning

confidence: 99%

LEX-EFT: The light exotics effective field theory

Carpenter¹,

Murphy²,

Smylie³

2023

Preprint

View full text Add to dashboard Cite

We propose the creation of a Light Exotics Effective Field Theory (LEX-EFT) catalog. LEX-EFT is a generic framework to capture all interactions between the Standard Model (SM) and all (or at least a large class of) theoretically allowed exotic states beyond the Standard Model (bSM), indexed by their SM and bSM charges. These states are light enough to be on or nearly on shell in some collider processes. This framework, which subsumes beyond the Standard Model paradigms as generally as possible, is meant to extend recent successful implementations of bSM EFTs and complement e.g. the Standard Model Effective Field Theory (SMEFT), which can capture the off-shell effects of exotic fields. In this work, we review a general method for the construction of a complete list of gauge-invariant operators involving SM interactions with light exotics via iterative tensor product decomposition, up to the desired order in mass dimension. Each operator is characterized by specific Clebsch-Gordan coefficients determined by the charge flow; we show how this charge flow affects the range of EFT validity and cross sections associated with an effective operator.We create an example catalog of exotic scalars coupling to SM gauge boson pairs, and we highlight some operators with exotic weak SU(2) L charges that can produce spectacular LHC phenomenology. We further demonstrate the utility of the LEX-EFT approach with several examples of effects on kinematic distributions and cross sections that would not be captured by EFTs agnostic to the exotic degrees of freedom and may evade the main inclusive collider searches tailored to the existing preferred set of standard bSM theories.

show abstract

LEX-EFT: the Light Exotics Effective Field Theory

Carpenter,

Murphy,

Smylie

2023

J. High Energ. Phys.

View full text Add to dashboard Cite

We propose the creation of a Light Exotics Effective Field Theory (LEX-EFT) catalog. LEX-EFT is a generic framework to capture all interactions between the Standard Model (SM) and all (or at least a large class of) theoretically allowed exotic states beyond the Standard Model (bSM), indexed by their SM and bSM charges. These states are light enough to be on or nearly on shell in some collider processes. This framework, which subsumes beyond the Standard Model paradigms as generally as possible, is meant to extend recent successful implementations of bSM EFTs and complement e.g. the Standard Model Effective Field Theory (SMEFT), which can capture the off-shell effects of exotic fields. In this work, we review a general method for the construction of a complete list of gauge-invariant operators involving SM interactions with light exotics via iterative tensor product decomposition, up to the desired order in mass dimension. Each operator is characterized by specific Clebsch-Gordan coefficients determined by the charge flow; we show how this charge flow affects the range of EFT validity and cross sections associated with an effective operator. We create an example catalog of exotic scalars coupling to SM gauge boson pairs, and we highlight some operators with exotic weak SU(2)L charges that can produce spectacular LHC phenomenology. We further demonstrate the utility of the LEX-EFT approach with several examples of effects on kinematic distributions and cross sections that would not be captured by EFTs agnostic to the exotic degrees of freedom and may evade the main inclusive collider searches tailored to the existing preferred set of standard bSM theories.

show abstract

Changing patterns in electroweak precision fits with new color-charged states: Oblique corrections and the W -boson mass

Cited by 16 publications

References 71 publications

Leptonic signatures of color-sextet scalars

Leptonic signatures of color-sextet scalars

LEX-EFT: The light exotics effective field theory

LEX-EFT: the Light Exotics Effective Field Theory

Contact Info

Product

Resources

About