Outputs (2904)

Expanding the Bethe/Gauge dictionary (2017)
Journal Article
Bullimore, M., Kim, H., & Lukowski, T. (2017). Expanding the Bethe/Gauge dictionary. Journal of High Energy Physics, 2017(11), Article 055. https://doi.org/10.1007/jhep11%282017%29055

We expand the Bethe/Gauge dictionary between the XXX Heisenberg spin chain and 2d N = (2, 2) supersymmetric gauge theories to include aspects of the algebraic Bethe ansatz. We construct the wave functions of off-shell Bethe states as orbifold defects... Read More about Expanding the Bethe/Gauge dictionary.

Defects and quantum Seiberg-Witten geometry (2015)
Journal Article
Bullimore, M., Kim, H., & Koroteev, P. (2015). Defects and quantum Seiberg-Witten geometry. Journal of High Energy Physics, 2015(05), Article 095. https://doi.org/10.1007/jhep05%282015%29095

We study the Nekrasov partition function of the five dimensional U(N) gauge theory with maximal supersymmetry on ℝ4 × S 1 in the presence of codimension two defects. The codimension two defects can be described either as monodromy defects, or by coup... Read More about Defects and quantum Seiberg-Witten geometry.

The superconformal index of the (2,0) theory with defects (2015)
Journal Article
Bullimore, M., & Kim, H. (2015). The superconformal index of the (2,0) theory with defects. Journal of High Energy Physics, 2015(05), Article 048. https://doi.org/10.1007/jhep05%282015%29048

We compute the supersymmetric partition function of the six-dimensional (2, 0) theory of type A N −1 on S 1 × S 5 in the presence of both codimension two and codimension four defects. We concentrate on a limit of the partition function depending on a... Read More about The superconformal index of the (2,0) theory with defects.

On S-duality of the superconformal index on lens spaces and 2d TQFT (2013)
Journal Article
Alday, L. F., Bullimore, M., & Fluder, M. (2013). On S-duality of the superconformal index on lens spaces and 2d TQFT. Journal of High Energy Physics, 2013(05), Article 122. https://doi.org/10.1007/jhep05%282013%29122

We consider the 4d superconformal index for N=2 gauge theories on S 1 × L(r, 1), where L(r, 1) is a Lens space. We focus on a one-parameter slice of the three-dimensional fugacity space and in that sector we show S-duality. We do so by rewriting the... Read More about On S-duality of the superconformal index on lens spaces and 2d TQFT.

Surface defects, the superconformal index and q-deformed Yang-Mills (2013)
Journal Article
Alday, L. F., Bullimore, M., Fluder, M., & Hollands, L. (2013). Surface defects, the superconformal index and q-deformed Yang-Mills. Journal of High Energy Physics, 2013(10), Article 018. https://doi.org/10.1007/jhep10%282013%29018

Recently a prescription to compute the four-dimensional N = 2 superconformal index in the presence of certain BPS surface defects has been given. These surface defects are labelled by symmetric representations of SU(N). In the present paper we give a... Read More about Surface defects, the superconformal index and q-deformed Yang-Mills.

Kinetic mixing of U(1)’s for local string models (2010)
Journal Article
Bullimore, M., Conlon, J. P., & Witkowski, L. T. (2010). Kinetic mixing of U(1)’s for local string models. Journal of High Energy Physics, 2010(11), Article 142. https://doi.org/10.1007/jhep11%282010%29142

We study kinetic mixing between massless U(1)s in toroidal orbifolds with D3-branes at orbifold singularities. We focus in particular on C3/Z4 singularities but also study C3/Z6 and C3/Z′6 singularities. We find kinetic mixing can be present and desc... Read More about Kinetic mixing of U(1)’s for local string models.

MHV diagrams from an all-loop recursion relation (2011)
Journal Article
Bullimore, M. (2011). MHV diagrams from an all-loop recursion relation. Journal of High Energy Physics, 2011(08), Article 107. https://doi.org/10.1007/jhep08%282011%29107

We derive an all-loop recursion relation for the rational integrands of scattering amplitudes in planar N=4 super Yang-Mills theory. The recursion relation is generated by an all-line shift of momentum twistors. We solve the recursion relation in det... Read More about MHV diagrams from an all-loop recursion relation.

Twistor-strings, Grassmannians and leading singularities (2010)
Journal Article
Bullimore, M., Mason, L., & Skinner, D. (2010). Twistor-strings, Grassmannians and leading singularities. Journal of High Energy Physics, 2010(03), Article 070. https://doi.org/10.1007/jhep03%282010%29070

We derive a systematic procedure for obtaining explicit, ℓ-loop leading singularities of planar N = 4 super Yang-Mills scattering amplitudes in twistor space directly from their momentum space channel diagram. The expressions are given as integrals o... Read More about Twistor-strings, Grassmannians and leading singularities.

The Coulomb Branch of 3d N=4 Theories (2017)
Journal Article
Bullimore, M., Dimofte, T., & Gaiotto, D. (2017). The Coulomb Branch of 3d N=4 Theories. Communications in Mathematical Physics, 354(2), 671-751. https://doi.org/10.1007/s00220-017-2903-0

We propose a construction for the quantum-corrected Coulomb branch of a general 3d gauge theory with N=4 supersymmetry, in terms of local coordinates associated with an abelianized theory. In a fixed complex structure, the holomorphic functions on th... Read More about The Coulomb Branch of 3d N=4 Theories.

Updated Bs -mixing constraints on new physics models for b→sℓ+ℓ− anomalies (2018)
Journal Article
Di Luzio, L., Kirk, M., & Lenz, A. (2018). Updated Bs -mixing constraints on new physics models for b→sℓ+ℓ− anomalies. Physical Review D, 97(9), Article 095035. https://doi.org/10.1103/physrevd.97.095035

Many new physics models that explain the intriguing anomalies in the b-quark flavor sector are severely constrained by Bs mixing, for which the Standard Model prediction and experiment agreed well until recently. The most recent Flavour Lattice Avera... Read More about Updated Bs -mixing constraints on new physics models for b→sℓ+ℓ− anomalies.

Approaching robust EFT limits for CP violation in the Higgs sector (2019)
Journal Article
Englert, C., Galler, P., Pilkington, A., & Spannowsky, M. (2019). Approaching robust EFT limits for CP violation in the Higgs sector. Physical Review D, 99(9), Article 095007. https://doi.org/10.1103/physrevd.99.095007

Constraining CP-violating interactions in effective field theory of dimension six faces two challenges. First, degeneracies in the multidimensional space of Wilson coefficients have to be lifted. Second, quadratic contributions of CP-odd dimension-si... Read More about Approaching robust EFT limits for CP violation in the Higgs sector.

A supersymmetric color superconductor from holography (2019)
Journal Article
Faedo, A. F., Mateos, D., Pantelidou, C., & Tarrío, J. (2019). A supersymmetric color superconductor from holography. Journal of High Energy Physics, 2019(5), Article 106. https://doi.org/10.1007/jhep05%282019%29106

We use holography to study d = 4, N=4 , SU(Nc) super Yang-Mills coupled to Nf ≪ Nc quark flavors. We place the theory at finite isospin density nI by turning on an isospin chemical potential μI = Mq, with Mq the quark mass. We also turn on two R-symm... Read More about A supersymmetric color superconductor from holography.

Studies of dimension-six EFT effects in vector boson scattering (2019)
Journal Article
Gomez-Ambrosio, R. (2019). Studies of dimension-six EFT effects in vector boson scattering. The European Physical Journal C, 79(5), Article 389. https://doi.org/10.1140/epjc/s10052-019-6893-2

We discuss the implications of dimension-six operators of the effective field theory framework in the study of vector boson scattering in the pp→ZZjj channel. We show that operators of dimension six should not be neglected in favour of those of dimen... Read More about Studies of dimension-six EFT effects in vector boson scattering.

Merging NLO multi-jet calculations with improved unitarization (2018)
Journal Article
Bellm, J., Gieseke, S., & Plätzer, S. (2018). Merging NLO multi-jet calculations with improved unitarization. The European Physical Journal C, 78(3), Article 244. https://doi.org/10.1140/epjc/s10052-018-5723-2

We present an algorithm to combine multiple matrix elements at LO and NLO with a parton shower. We build on the unitarized merging paradigm. The inclusion of higher orders and multiplicities reduce the scale uncertainties for observables sensitive to... Read More about Merging NLO multi-jet calculations with improved unitarization.

Oscillons in a perturbed signum-Gordon model (2018)
Journal Article
Klimas, P., Streibel, J., Wereszczynski, A., & Zakrzewski, W. (2018). Oscillons in a perturbed signum-Gordon model. Journal of High Energy Physics, 2018(04), Article 102. https://doi.org/10.1007/jhep04%282018%29102

We study various properties of a perturbed signum-Gordon model, which has been obtained through the dimensional reduction of the called ‘first BPS submodel of the Skyrme model’. This study is motivated by the observation that the first BPS submodel o... Read More about Oscillons in a perturbed signum-Gordon model.

Second-order QCD effects in Higgs boson production through vector boson fusion (2018)
Journal Article
Cruz-Martinez, J., Gehrmann, T., Glover, E., & Huss, A. (2018). Second-order QCD effects in Higgs boson production through vector boson fusion. Physics Letters B, 781, 672-677. https://doi.org/10.1016/j.physletb.2018.04.046

We compute the factorising second-order QCD corrections to the electroweak production of a Higgs boson through vector boson fusion. Our calculation is fully differential in the kinematics of the Higgs boson and of the final state jets, and uses the a... Read More about Second-order QCD effects in Higgs boson production through vector boson fusion.

Weak vector boson production with many jets at the LHC s=13  TeV (2018)
Journal Article
Anger, F., Febres Cordero, F., Höche, S., & Maître, D. (2018). Weak vector boson production with many jets at the LHC s=13  TeV. Physical Review D, 97(9), Article 096010. https://doi.org/10.1103/physrevd.97.096010

Signatures with an electroweak vector boson and many jets play a crucial role at the Large Hadron Collider, both in the measurement of Standard-Model parameters and in searches for new physics. Precise predictions for these multiscale processes are t... Read More about Weak vector boson production with many jets at the LHC s=13  TeV.

An ultra-stable gold-coordinated protein cage displaying reversible assembly (2019)
Journal Article
Malay, A. D., Miyazaki, N., Biela, A., Chakraborti, S., Majsterkiewicz, K., Stupka, I., …Heddle, J. G. (2019). An ultra-stable gold-coordinated protein cage displaying reversible assembly. Nature, 569, 438-442. https://doi.org/10.1038/s41586-019-1185-4

Symmetrical protein cages have evolved to fulfil diverse roles in nature, including compartmentalization and cargo delivery1, and have inspired synthetic biologists to create novel protein assemblies via the precise manipulation of protein–protein in... Read More about An ultra-stable gold-coordinated protein cage displaying reversible assembly.

Strong coupling constant extraction from high-multiplicity Z + jets observables (2018)
Journal Article
Johnson, M., & Maître, D. (2018). Strong coupling constant extraction from high-multiplicity Z + jets observables. Physical Review D, 97(5), Article 054013. https://doi.org/10.1103/physrevd.97.054013

We present a strong coupling constant extraction at next-to-leading order QCD accuracy using ATLAS Z + 2 ,3,4 jets data. This is the first extraction using processes with a dependency on high powers of the coupling constant. We obtain values of the s... Read More about Strong coupling constant extraction from high-multiplicity Z + jets observables.

The NNLO QCD soft function for 1-jettiness (2018)
Journal Article
Campbell, J. M., Ellis, R. K., Mondini, R., & Williams, C. (2018). The NNLO QCD soft function for 1-jettiness. The European Physical Journal C, 78(3), Article 234. https://doi.org/10.1140/epjc/s10052-018-5732-1

We calculate the soft function for the global event variable 1-jettiness at next-to-next-to-leading order (NNLO) in QCD. We focus specifically on the non-Abelian contribution, which, unlike the Abelian part, is not determined by the next-to-leading o... Read More about The NNLO QCD soft function for 1-jettiness.