Outputs (90)

SMEFT analysis of vector boson scattering and diboson data from the LHC Run II (2021)
Journal Article
Ethier, J. J., Gomez-Ambrosio, R., Magni, G., & Rojo, J. (2021). SMEFT analysis of vector boson scattering and diboson data from the LHC Run II. The European Physical Journal C, 81(6), https://doi.org/10.1140/epjc/s10052-021-09347-7

We present a systematic interpretation of vector boson scattering (VBS) and diboson measurements from the LHC in the framework of the dimension-six standard model effective field theory (SMEFT). We consider all available measurements of VBS fiducial... Read More about SMEFT analysis of vector boson scattering and diboson data from the LHC Run II.

A fully differential SMEFT analysis of the golden channel using the method of moments (2021)
Journal Article
Banerjee, S., Gupta, R. S., Ochoa-Valeriano, O., Spannowsky, M., & Venturini, E. (2021). A fully differential SMEFT analysis of the golden channel using the method of moments. Journal of High Energy Physics, 2021(6), Article 31. https://doi.org/10.1007/jhep06%282021%29031

The Method of Moments is a powerful framework to disentangle the relative contributions of amplitudes of a specific process to its various phase space regions. We apply this method to carry out a fully differential analysis of the Higgs decay channel... Read More about A fully differential SMEFT analysis of the golden channel using the method of moments.

EFT diagrammatica: UV roots of the CP-conserving SMEFT (2021)
Journal Article
Bakshi, S. D., Chakrabortty, J., Prakash, S., Rahaman, S. U., & Spannowsky, M. (2021). EFT diagrammatica: UV roots of the CP-conserving SMEFT. Journal of High Energy Physics, 2021(6), Article 33. https://doi.org/10.1007/jhep06%282021%29033

The Standard Model Effective Field Theory (SMEFT) is an established theoretical framework that parametrises the impact a UV theory has on low-energy observables. Such parametrization is achieved by studying the interactions of SM fields encapsulated... Read More about EFT diagrammatica: UV roots of the CP-conserving SMEFT.

Incoherent hydrodynamics of density waves in magnetic fields (2021)
Journal Article
Donos, A., Pantelidou, C., & Ziogas, V. (2021). Incoherent hydrodynamics of density waves in magnetic fields. Journal of High Energy Physics, 2021(5), Article 270. https://doi.org/10.1007/jhep05%282021%29270

We use holography to derive effective theories of fluctuations in spontaneously broken phases of systems with finite temperature, chemical potential, magnetic field and momentum relaxation in which the order parameters break translations. We analytic... Read More about Incoherent hydrodynamics of density waves in magnetic fields.

Challenges in Monte Carlo Event Generator Software for High-Luminosity LHC (2021)
Journal Article
Valassi, A., Yazgan, E., McFayden, J., Amoroso, S., Bendavid, J., Buckley, A., Cacciari, M., Childers, T., Ciulli, V., Frederix, R., Frixione, S., Giuli, F., Grohsjean, A., Gütschow, C., Höche, S., Hopkins, W., Ilten, P., Konstantinov, D., Krauss, F., Li, Q., …Stewart, G. A. (2021). Challenges in Monte Carlo Event Generator Software for High-Luminosity LHC. Computing and Software for Big Science, 5(1), Article 12. https://doi.org/10.1007/s41781-021-00055-1

We review the main software and computing challenges for the Monte Carlo physics event generators used by the LHC experiments, in view of the High-Luminosity LHC (HL-LHC) physics programme. This paper has been prepared by the HEP Software Foundation... Read More about Challenges in Monte Carlo Event Generator Software for High-Luminosity LHC.

Exact properties of an integrated correlator in $$ \mathcal{N} $$ = 4 SU(N) SYM (2021)
Journal Article
Dorigoni, D., Green, M. B., & Wen, C. (2021). Exact properties of an integrated correlator in $$ \mathcal{N} $$ = 4 SU(N) SYM. Journal of High Energy Physics, 2021(5), Article 89. https://doi.org/10.1007/jhep05%282021%29089

We present a novel expression for an integrated correlation function of four superconformal primaries in SU(N) N = 4 supersymmetric Yang-Mills (N = 4 SYM) theory. This integrated correlator, which is based on supersymmetric localisation, has been the... Read More about Exact properties of an integrated correlator in $$ \mathcal{N} $$ = 4 SU(N) SYM.

Extended Higgs boson sectors, effective field theory, and Higgs boson phenomenology (2021)
Journal Article
Anisha, Banerjee, U., Chakrabortty, J., Englert, C., & Spannowsky, M. (2021). Extended Higgs boson sectors, effective field theory, and Higgs boson phenomenology. Physical Review D, 103(9), https://doi.org/10.1103/physrevd.103.096009

We consider the phenomenological implications of charged scalar extensions of the Standard Model (SM) Higgs sector in addition to effective field theory (EFT) couplings of this new state to SM matter. We perform a detailed investigation of modificati... Read More about Extended Higgs boson sectors, effective field theory, and Higgs boson phenomenology.

Precise predictions for WH+jet production at the LHC (2021)
Journal Article
Gauld, R., Gehrmann-De Ridder, A., Glover, E., Huss, A., & Majer, I. (2021). Precise predictions for WH+jet production at the LHC. Physics Letters B, 817, Article 136335. https://doi.org/10.1016/j.physletb.2021.136335

We present precise predictions for the production of a Higgs boson in association with a hadronic jet and a W boson at hadron colliders. The behaviour of QCD corrections are studied for fiducial cross sections and distributions of the charged gauge b... Read More about Precise predictions for WH+jet production at the LHC.

Combine and conquer: event reconstruction with Bayesian Ensemble Neural Networks (2021)
Journal Article
Araz, J. Y., & Spannowsky, M. (2021). Combine and conquer: event reconstruction with Bayesian Ensemble Neural Networks. Journal of High Energy Physics, 2021(4), Article 296. https://doi.org/10.1007/jhep04%282021%29296

Ensemble learning is a technique where multiple component learners are combined through a protocol. We propose an Ensemble Neural Network (ENN) that uses the combined latent-feature space of multiple neural network classifiers to improve the represen... Read More about Combine and conquer: event reconstruction with Bayesian Ensemble Neural Networks.

Boundaries, Vermas and factorisation (2021)
Journal Article
Bullimore, M., Crew, S., & Zhang, D. (2021). Boundaries, Vermas and factorisation. Journal of High Energy Physics, 2021(4), Article 263. https://doi.org/10.1007/jhep04%282021%29263

We revisit the factorisation of supersymmetric partition functions of 3d N = 4 gauge theories. The building blocks are hemisphere partition functions of a class of UV N = (2, 2) boundary conditions that mimic the presence of isolated vacua at infinit... Read More about Boundaries, Vermas and factorisation.

Towards a quantum computing algorithm for helicity amplitudes and parton showers (2021)
Journal Article
Bepari, K., Malik, S., Spannowsky, M., & Williams, S. (2021). Towards a quantum computing algorithm for helicity amplitudes and parton showers. Physical Review D, 103(7), Article 076020. https://doi.org/10.1103/physrevd.103.076020

The interpretation of measurements of high-energy particle collisions relies heavily on the performance of full event generators, which include the calculation of the hard process and the subsequent parton shower step. With the continuous improvement... Read More about Towards a quantum computing algorithm for helicity amplitudes and parton showers.

Towards the Virasoro-Shapiro amplitude in AdS5×S5 (2021)
Journal Article
Abl, T., Heslop, P., & Lipstein, A. E. (2021). Towards the Virasoro-Shapiro amplitude in AdS5×S5. Journal of High Energy Physics, 2021(4), Article 237. https://doi.org/10.1007/jhep04%282021%29237

We propose a systematic procedure for obtaining all single trace 1/2-BPS correlators in N = 4 super Yang-Mills corresponding to the four-point tree-level amplitude for type IIB string theory in AdS5 × S5. The underlying idea is to compute generalised... Read More about Towards the Virasoro-Shapiro amplitude in AdS5×S5.

Novel Representation of an Integrated Correlator in N=4 Supersymmetric Yang-Mills Theory (2021)
Journal Article
Dorigoni, D., Green, M. B., & Wen, C. (2021). Novel Representation of an Integrated Correlator in N=4 Supersymmetric Yang-Mills Theory. Physical Review Letters, 126(16), Article 161601. https://doi.org/10.1103/physrevlett.126.161601

An integrated correlator of four superconformal stress-tensor primaries of N = 4 supersymmetric S U ( N ) Yang-Mills theory (SYM), originally obtained by localization, is reexpressed as a two-dimensional lattice sum that is manifestly invariant under... Read More about Novel Representation of an Integrated Correlator in N=4 Supersymmetric Yang-Mills Theory.

Thermodynamics of Many Black Holes (2021)
Journal Article
Gregory, R., Lim, Z. L., & Scoins, A. (2021). Thermodynamics of Many Black Holes. Frontiers in Physics, 9, Article 666041. https://doi.org/10.3389/fphy.2021.666041

We discuss the thermodynamics of an array of collinear black holes which may be accelerating. We prove a general First Law, including variations in the tensions of strings linking and accelerating the black holes. We analyse the implications of the F... Read More about Thermodynamics of Many Black Holes.

Constraining CP violating operators in charged and neutral triple gauge couplings (2021)
Journal Article
Bieköetter, A., Gregg, P., Krauss, F., & Schöenherr, M. (2021). Constraining CP violating operators in charged and neutral triple gauge couplings. Physics Letters B, 817, https://doi.org/10.1016/j.physletb.2021.136311

We constrain CP-violating charged and neutral anomalous triple gauge couplings using LHC measurements and projections of diboson and VBF Vjj production, both with subsequent leptonic decays. For triple gauge couplings involving W bosons we analyse di... Read More about Constraining CP violating operators in charged and neutral triple gauge couplings.

Parton distributions from LHC, HERA, Tevatron and fixed target data: MSHT20 PDFs (2021)
Journal Article
Bailey, S., Cridge, T., Harland-Lang, L., Martin, A., & Thorne, R. (2021). Parton distributions from LHC, HERA, Tevatron and fixed target data: MSHT20 PDFs. The European Physical Journal C, 81(4), Article 341. https://doi.org/10.1140/epjc/s10052-021-09057-0

We present the new MSHT20 set of parton distribution functions (PDFs) of the proton, determined from global analyses of the available hard scattering data. The PDFs are made available at NNLO, NLO, and LO, and supersede the MMHT14 sets. They are obta... Read More about Parton distributions from LHC, HERA, Tevatron and fixed target data: MSHT20 PDFs.

Precision SMEFT bounds from the VBF Higgs at high transverse momentum (2021)
Journal Article
Araz, J. Y., Banerjee, S., Gupta, R. S., & Spannowsky, M. (2021). Precision SMEFT bounds from the VBF Higgs at high transverse momentum. Journal of High Energy Physics, 2021(4), Article 125. https://doi.org/10.1007/jhep04%282021%29125

We study the production of Higgs bosons at high transverse momenta via vector-boson fusion (VBF) in the Standard Model Effective Field Theory (SMEFT). We find that contributions from four independent operator combinations dominate in this limit. Thes... Read More about Precision SMEFT bounds from the VBF Higgs at high transverse momentum.

Combined subleading high-energy logarithms and NLO accuracy for W production in association with multiple jets (2021)
Journal Article
Andersen, J. R., Black, J. A., Brooks, H. M., Byrne, E. P., Maier, A., & Smillie, J. M. (2021). Combined subleading high-energy logarithms and NLO accuracy for W production in association with multiple jets. Journal of High Energy Physics, 2021(4), Article 105. https://doi.org/10.1007/jhep04%282021%29105

Large logarithmic corrections in s^/p2t lead to substantial variations in the perturbative predictions for inclusive W-plus-dijet processes at the Large Hadron Collider. This instability can be cured by summing the leading-logarithmic contributions i... Read More about Combined subleading high-energy logarithms and NLO accuracy for W production in association with multiple jets.

Discovery potential of FASERν with contained vertex and through-going events (2021)
Journal Article
Bakhti, P., Farzan, Y., & Pascoli, S. (2021). Discovery potential of FASERν with contained vertex and through-going events. Journal of High Energy Physics, 2021(4), Article 75. https://doi.org/10.1007/jhep04%282021%29075

FASERν is a newly proposed detector whose main mission is to detect the neutrino flux from the collision of the proton beams at the ATLAS Interaction Point (IP) during the run III of the LHC in 2022–2024. We show that this detector can also test cert... Read More about Discovery potential of FASERν with contained vertex and through-going events.

Plahte diagrams for string scattering amplitudes (2021)
Journal Article
Srisangyingcharoen, P., & Mansfield, P. (2021). Plahte diagrams for string scattering amplitudes. Journal of High Energy Physics, 2021(4), Article 17. https://doi.org/10.1007/jhep04%282021%29017

Plahte identities are monodromy relations between open string scattering amplitudes at tree level derived from the Koba-Nielsen formula. We represent these identities by polygons in the complex plane. These diagrams make manifest the appearance of si... Read More about Plahte diagrams for string scattering amplitudes.