Outputs (2904)

Exclusive physics at the LHC with SuperChic 2 (2016)
Journal Article
Harland-Lang, L., Khoze, V., & Ryskin, M. (2016). Exclusive physics at the LHC with SuperChic 2. The European Physical Journal C, 76(1), Article 9. https://doi.org/10.1140/epjc/s10052-015-3832-8

We present a range of physics results for central exclusive production processes at the LHC, using the new SuperChic 2 Monte Carlo event generator. This includes significant theoretical improvements and updates, most importantly a fully differential... Read More about Exclusive physics at the LHC with SuperChic 2.

Parton-shower uncertainties with Herwig 7: benchmarks at leading order (2016)
Journal Article
Bellm, J., Nail, G., Plätzer, S., Schichtel, P., & Siódmok, A. (2016). Parton-shower uncertainties with Herwig 7: benchmarks at leading order. The European Physical Journal C, 76(12), Article 665. https://doi.org/10.1140/epjc/s10052-016-4506-x

We perform a detailed study of the sources of perturbative uncertainty in parton-shower predictions within the Herwig 7 event generator. We benchmark two rather different parton-shower algorithms, based on angular-ordered and dipole-type evolution, a... Read More about Parton-shower uncertainties with Herwig 7: benchmarks at leading order.

Beyond standard model calculations with Sherpa (2015)
Journal Article
Höche, S., Kuttimalai, S., Schumann, S., & Siegert, F. (2015). Beyond standard model calculations with Sherpa. The European Physical Journal C, 75(3), Article 135. https://doi.org/10.1140/epjc/s10052-015-3338-4

We present a fully automated framework as part of the Sherpa event generator for the computation of tree-level cross sections in Beyond Standard Model scenarios, making use of model information given in the Universal FeynRules Output format. Elementa... Read More about Beyond standard model calculations with Sherpa.

On the maximal use of Monte Carlo samples: re-weighting events at NLO accuracy (2016)
Journal Article
Mattelaer, O. (2016). On the maximal use of Monte Carlo samples: re-weighting events at NLO accuracy. The European Physical Journal C, 76(12), Article 674. https://doi.org/10.1140/epjc/s10052-016-4533-7

Accurate Monte Carlo simulations for high-energy events at CERN’s Large Hadron Collider, are very expensive, both from the computing and storage points of view. We describe a method that allows to consistently re-use parton-level samples accurate up... Read More about On the maximal use of Monte Carlo samples: re-weighting events at NLO accuracy.

Asymmetric heavy-quark hadroproduction at LHCb: predictions and applications (2019)
Journal Article
Gauld, R., Haisch, U., & Pecjak, B. D. (2019). Asymmetric heavy-quark hadroproduction at LHCb: predictions and applications. Journal of High Energy Physics, 2019(3), Article 166. https://doi.org/10.1007/jhep03%282019%29166

We present a phenomenological analysis of asymmetric bottom- and charm-quark production within the LHCb acceptance relevant for pp collisions at s√=13 TeV. Predictions are provided for both anti-kt bottom- and charm-jet pairs, which are kept differen... Read More about Asymmetric heavy-quark hadroproduction at LHCb: predictions and applications.

The photon PDF in events with rapidity gaps (2016)
Journal Article
Harland-Lang, L., Khoze, V., & Ryskin, M. (2016). The photon PDF in events with rapidity gaps. The European Physical Journal C, 76(5), Article 255. https://doi.org/10.1140/epjc/s10052-016-4100-2

We consider photon-initiated events with large rapidity gaps in proton–proton collisions, where one or both protons may break up. We formulate a modified photon PDF that accounts for the specific experimental rapidity gap veto, and demonstrate how th... Read More about The photon PDF in events with rapidity gaps.

U(1) ′ mediated decays of heavy sterile neutrinos in MiniBooNE (2019)
Journal Article
Ballett, P., Pascoli, S., & Ross-Lonergan, M. (2019). U(1) ′ mediated decays of heavy sterile neutrinos in MiniBooNE. Physical Review D, 99(7), Article 071701(R). https://doi.org/10.1103/physrevd.99.071701

The MiniBooNE low-energy excess is a long-standing problem which has received further confirmation with a reanalysis using newly collected data, with the anomaly now at the 4.8σ level. In this paper we propose a novel explanation which advocates a lo... Read More about U(1) ′ mediated decays of heavy sterile neutrinos in MiniBooNE.

LHC searches for Dark Matter in compressed mass scenarios: challenges in the forward proton mode (2019)
Journal Article
Harland-Lang, L., Khoze, V., Ryskin, M., & Tasevsky, M. (2019). LHC searches for Dark Matter in compressed mass scenarios: challenges in the forward proton mode. Journal of High Energy Physics, 2019(4), Article 10. https://doi.org/10.1007/jhep04%282019%29010

We analyze in detail the LHC prospects at the center-of-mass enery of s√ = 14 TeV for charged electroweakino searches, decaying to leptons, in compressed supersymmetry scenarios, via exclusive photon-initiated pair production. This provides a potenti... Read More about LHC searches for Dark Matter in compressed mass scenarios: challenges in the forward proton mode.

Higgs vacuum decay from particle collisions? (2019)
Journal Article
Cuspinera, L., Gregory, R., Marshall, K. M., & Moss, I. G. (2019). Higgs vacuum decay from particle collisions?. Physical Review D, 99(2), Article 024046. https://doi.org/10.1103/physrevd.99.024046

We examine the effect of large extra dimensions on black hole seeded vacuum decay using the Randall-Sundrum model as a prototype for warped extra dimensions. We model the braneworld black hole by a tidal solution and solve the Higgs equations of moti... Read More about Higgs vacuum decay from particle collisions?.

Exact finite volume expectation values of local operators in excited states (2015)
Journal Article
Pozsgay, B., Szécsényi, I., & Takács, G. (2015). Exact finite volume expectation values of local operators in excited states. Journal of High Energy Physics, 2015(4), Article 23. https://doi.org/10.1007/jhep04%282015%29023

We present a conjecture for the exact expression of finite volume expectation values in excited states in integrable quantum field theories, which is an extension of an earlier conjecture to the case of general diagonal factorized scattering with bou... Read More about Exact finite volume expectation values of local operators in excited states.

Characterising dark matter searches at colliders and direct detection experiments: vector mediators (2015)
Journal Article
Buchmueller, O., Dolan, M. J., Malik, S. A., & McCabe, C. (2015). Characterising dark matter searches at colliders and direct detection experiments: vector mediators. Journal of High Energy Physics, 2015(1), Article 37. https://doi.org/10.1007/jhep01%282015%29037

We introduce a Minimal Simplified Dark Matter (MSDM) framework to quantitatively characterise dark matter (DM) searches at the LHC. We study two MSDM models where the DM is a Dirac fermion which interacts with a vector and axial-vector mediator. The... Read More about Characterising dark matter searches at colliders and direct detection experiments: vector mediators.

Constraints on dark photons and axionlike particles from the SuperCDMS Soudan experiment (2020)
Journal Article
Aralis, T., Aramaki, T., Arnquist, I., Azadbakht, E., Baker, W., Banik, S., …Zheng, L. (2020). Constraints on dark photons and axionlike particles from the SuperCDMS Soudan experiment. Physical Review D, 101(5), Article 052008. https://doi.org/10.1103/physrevd.101.052008

We present an analysis of electron recoils in cryogenic germanium detectors operated during the SuperCDMS Soudan experiment. The data are used to set new constraints on the axioelectric coupling of axionlike particles and the kinetic mixing parameter... Read More about Constraints on dark photons and axionlike particles from the SuperCDMS Soudan experiment.

Lepton flavor violation in the scotogenic model (2014)
Journal Article
Toma, T., & Vicente, A. (2014). Lepton flavor violation in the scotogenic model. Journal of High Energy Physics, 2014(1), Article 160. https://doi.org/10.1007/jhep01%282014%29160

We investigate lepton flavor violation in the scotogenic model proposed by Ma in which neutrinos acquire non-zero masses at the 1-loop level. Although some works exist in this direction, they have mainly focused on the radiative decay ℓα → ℓβγ. Motiv... Read More about Lepton flavor violation in the scotogenic model.

Convexity, gauge-dependence and tunneling rates (2016)
Journal Article
Plascencia, A. D., & Tamarit, C. (2016). Convexity, gauge-dependence and tunneling rates. Journal of High Energy Physics, 2016(10), Article 99. https://doi.org/10.1007/jhep10%282016%29099

We clarify issues of convexity, gauge-dependence and radiative corrections in relation to tunneling rates. Despite the gauge dependence of the effective action at zero and finite temperature, it is shown that tunneling and nucleation rates remain ind... Read More about Convexity, gauge-dependence and tunneling rates.

Contact interactions between particle worldlines (2016)
Journal Article
Edwards, J. P. (2016). Contact interactions between particle worldlines. Journal of High Energy Physics, 2016(1), Article 33. https://doi.org/10.1007/jhep01%282016%29033

We construct contact interactions for bosonic and fermionic point particles. We first relate the resulting theories to classical electrostatics by taking functional averages over worldlines whose endpoints are fixed to charged particles. Counting tho... Read More about Contact interactions between particle worldlines.

TT-deformed 2D quantum field theories (2016)
Journal Article
Cavaglià, A., Negro, S., Szécsényi, I. M., & Tateo, R. (2016). TT-deformed 2D quantum field theories. Journal of High Energy Physics, 2016(10), Article 112. https://doi.org/10.1007/jhep10%282016%29112

It was noticed many years ago, in the framework of massless RG flows, that the irrelevant composite operator T¯T, built with the components of the energy-momentum tensor, enjoys very special properties in 2D quantum field theories, and can be regarded... Read More about TT-deformed 2D quantum field theories.

Quasi-integrable deformations of the SU(3) Affine Toda theory (2016)
Journal Article
Ferreira, L., Klimas, P., & Zakrzewski, W. J. (2016). Quasi-integrable deformations of the SU(3) Affine Toda theory. Journal of High Energy Physics, 2016(5), Article 65. https://doi.org/10.1007/jhep05%282016%29065

We consider deformations of the SU(3) Affine Toda theory (AT) and investigate the integrability properties of the deformed theories. We find that for some special deformations all conserved quantities change to being conserved only asymptotically, i.e.... Read More about Quasi-integrable deformations of the SU(3) Affine Toda theory.

The production of a diphoton resonance via photon-photon fusion (2016)
Journal Article
Harland-Lang, L., Khoze, V., & Ryskin, M. (2016). The production of a diphoton resonance via photon-photon fusion. Journal of High Energy Physics, 2016(3), Article 182. https://doi.org/10.1007/jhep03%282016%29182

Motivated by the recent LHC observation of an excess of diphoton events around an invariant mass of 750GeV, we discuss the possibility that this is due to the decay of a new scalar or pseudoscalar resonance dominantly produced via photon-photon fusio... Read More about The production of a diphoton resonance via photon-photon fusion.

Towards the five-loop Beta function for a general gauge group (2016)
Journal Article
Luthe, T., Maier, A., Marquard, P., & Schröder, Y. (2016). Towards the five-loop Beta function for a general gauge group. Journal of High Energy Physics, 2016(7), Article 127. https://doi.org/10.1007/jhep07%282016%29127

We present analytical results for the N4 f and N3 f terms of the five-loop Beta function, for a general gauge group. While the former term agrees with results available from large-Nf studies, the latter is new and extends the value known for SU(3) fro... Read More about Towards the five-loop Beta function for a general gauge group.

The prompt atmospheric neutrino flux in the light of LHCb (2016)
Journal Article
Gauld, R., Rojo, J., Rottoli, L., Sarkar, S., & Talbert, J. (2016). The prompt atmospheric neutrino flux in the light of LHCb. Journal of High Energy Physics, 2016(2), Article 130. https://doi.org/10.1007/jhep02%282016%29130

The recent observation of very high energy cosmic neutrinos by IceCube heralds the beginning of neutrino astronomy. At these energies, the dominant background to the astrophysical signal is the flux of ‘prompt’ neutrinos, arising from the decay of cha... Read More about The prompt atmospheric neutrino flux in the light of LHCb.