Unstable-particle effective field theory

Beneke, Μ.

doi:10.1016/j.nuclphysbps.2015.03.016

Cited by 7 publications

(2 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The HR term is therefore simply a constant contribution to dΓ/dM 2 h in the edge region. The structure of ( 3) is similar to resonant and non-resonant production in the factorization formula for the line-shape of a resonance or pair production near threshold in previous applications of unstable-particle effective theory (see the review [8]). However, here both terms appear at leading power due to the presence of a resonant bulk region at tree-level rather than a single resonant invariant mass or threshold energy.…”

Section: Factorization and Leading Regionsmentioning

confidence: 65%

Radiative distortion of kinematic edges in cascade decays

et al. 2017

Self Cite

View full text Add to dashboard Cite

Kinematic edges of cascade decays of new particles produced in high-energy collisions may provide important constraints on the involved particles' masses. For the exemplary case of gluino decay $\tilde{g}\to q\bar q \tilde{\chi}$ into a pair of quarks and a neutralino through a squark resonance, we study the hadronic invariant mass distribution in the vicinity of the kinematic edge. We perform a next-to-leading order calculation in the strong coupling $\alpha_s$ and the ratio of squark width and squark mass $\Gamma_\tilde{q}/m_\tilde{q}$, based on a systematic expansion in $\Gamma_\tilde{q}/m_\tilde{q}$. The separation into hard, collinear and soft contributions elucidates the process dependent and universal features of distributions in the edge region, represented by on-shell decay matrix elements, universal jet functions and a soft function that depends on the resonance propagator and soft Wilson lines.Comment: 15 pages, 5 figure

show abstract

Section: Factorization and Leading Regionsmentioning

confidence: 65%

Radiative distortion of kinematic edges in cascade decays

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…[51]. Since perturbative unitarity of the S matrix is ensured, the CMS can be considered as a rigorous formalism for defining a renormalized quantum field theory [38,52].…”

Section: Introductionmentioning

confidence: 99%

Mass and width of theΔ(1232)resonance using complex-mass renormalization

et al. 2017

View full text Add to dashboard Cite

show abstract

The quintuplet annihilation spectrum

Baumgart,

Rodd,

Slatyer

et al. 2024

J. High Energ. Phys.

View full text Add to dashboard Cite

We extend the Effective Field Theory of Heavy Dark Matter to arbitrary odd representations of SU(2) and incorporate the effects of bound states. This formalism is then deployed to compute the gamma-ray spectrum for a 5 of SU(2): quintuplet dark matter. Except at isolated values of the quintuplet mass, the bound state contribution to hard photons with energy near the dark-matter mass is at the level of a few percent compared to that from direct annihilation. Further, compared to smaller representations, such as the triplet wino, the quintuplet can exhibit a strong variation in the shape of the spectrum as a function of mass. Using our results, we forecast the fate of the thermal quintuplet, which has a mass of ~13.6 TeV. We find that existing H.E.S.S. data should be able to significantly test the scenario, however, the final word on this canonical model of minimal dark matter will likely be left to the Cherenkov Telescope Array (CTA).

show abstract

Unstable-particle effective field theory

Cited by 7 publications

References 53 publications

Radiative distortion of kinematic edges in cascade decays

Radiative distortion of kinematic edges in cascade decays

Mass and width of theΔ(1232)resonance using complex-mass renormalization

The quintuplet annihilation spectrum

Contact Info

Product

Resources

About