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Measurement of W boson angular distributions in events with high transverse momentum jets at s√= 8 TeV using the ATLAS detector (2016)
Journal Article
Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., …Zwalinski, L. (2017). Measurement of W boson angular distributions in events with high transverse momentum jets at s√= 8 TeV using the ATLAS detector. Physics Letters B, 765, 132-153. https://doi.org/10.1016/j.physletb.2016.12.005

The W boson angular distribution in events with high transverse momentum jets is measured using data collected by the ATLAS experiment from proton–proton collisions at a centre-of-mass energy s=8TeV at the Large Hadron Collider, corresponding to an i... Read More about Measurement of W boson angular distributions in events with high transverse momentum jets at s√= 8 TeV using the ATLAS detector.

Hearing the signal of dark sectors with gravitational wave detectors (2016)
Journal Article
Jaeckel, J., Khoze, V. V., & Spannowsky, M. (2016). Hearing the signal of dark sectors with gravitational wave detectors. Physical Review D, 94(10), Article 103519. https://doi.org/10.1103/physrevd.94.103519

Motivated by advanced LIGO (aLIGO)’s recent discovery of gravitational waves, we discuss signatures of new physics that could be seen at ground- and space-based interferometers. We show that a first-order phase transition in a dark sector would lead... Read More about Hearing the signal of dark sectors with gravitational wave detectors.

Jet activity as a probe of diphoton resonance production (2016)
Journal Article
Harland-Lang, L., Khoze, V., Ryskin, M., & Spannowsky, M. (2016). Jet activity as a probe of diphoton resonance production. The European Physical Journal C, 76, Article 623. https://doi.org/10.1140/epjc/s10052-016-4471-4

We explore the method of using the measured jet activity associated with a high-mass resonance state to determine the corresponding production modes. To demonstrate the potential of the approach, we consider the case of a resonance of mass MR decayin... Read More about Jet activity as a probe of diphoton resonance production.

Neutrino jets from high-mass WR gauge bosons in TeV-scale left-right symmetric models (2016)
Journal Article
Mitra, M., Ruiz, R., Scott, D. J., & Spannowsky, M. (2016). Neutrino jets from high-mass WR gauge bosons in TeV-scale left-right symmetric models. Physical Review D, 94(9), Article 095016. https://doi.org/10.1103/physrevd.94.095016

We reexamine the discovery potential at hadron colliders of high-mass right-handed (RH) gauge bosons WR—an inherent ingredient of left-right symmetric models (LRSM).We focus on the regime where theWR is very heavy compared to the heavy Majorana neutr... Read More about Neutrino jets from high-mass WR gauge bosons in TeV-scale left-right symmetric models.

LHC Signatures Of Scalar Dark Energy (2016)
Journal Article
Brax, P., Burrage, C., Englert, C., & Spannowsky, M. (2016). LHC Signatures Of Scalar Dark Energy. Physical Review D, 94(8), Article 084054. https://doi.org/10.1103/physrevd.94.084054

Scalar dark energy fields that couple to the standard model can give rise to observable signatures at the LHC. In this work, we show that t¯t þ missing energy and monojet searches are suitable probes in the limit where the dark energy scalar is stabl... Read More about LHC Signatures Of Scalar Dark Energy.

A facility to search for hidden particles at the CERN SPS: the SHiP physics case. (2016)
Journal Article
Altmannshofer, W., Asaka, T., Batell, B., Bezrukov, F., Bondarenko, K., Boyarsky, A., …Zurek, K. M. (2016). A facility to search for hidden particles at the CERN SPS: the SHiP physics case. Reports on Progress in Physics, 79(12), Article 124201. https://doi.org/10.1088/0034-4885/79/12/124201

The standard model of elementary particle physics has provided a consistent description of Nature's fundamental constituents and their interactions. Its predictions have been tested and confirmed by numerous experiments. The Large Hadron Collider's r... Read More about A facility to search for hidden particles at the CERN SPS: the SHiP physics case..

S-Channel Dark Matter Simplified Models and Unitarity (2016)
Journal Article
Englert, C., McCullough, M., & Spannowsky, M. (2016). S-Channel Dark Matter Simplified Models and Unitarity. Physics of the Dark Universe, 14, 48-56. https://doi.org/10.1016/j.dark.2016.09.002

The ultraviolet structure of -channel mediator dark matter simplified models at hadron colliders is considered. In terms of commonly studied -channel mediator simplified models it is argued that at arbitrarily high energies the perturbative descripti... Read More about S-Channel Dark Matter Simplified Models and Unitarity.

Towards resolving strongly-interacting dark sectors at colliders (2016)
Journal Article
Englert, C., Nordström, K., & Spannowsky, M. (2016). Towards resolving strongly-interacting dark sectors at colliders. Physical Review D, 94(5), Article 055028. https://doi.org/10.1103/physrevd.94.055028

Dark sectors with strong interactions have received considerable interest. Assuming the existence of a minimally coupled dark sector which runs to strong interactions in the infrared, we address the question whether the scaling behavior of this dark... Read More about Towards resolving strongly-interacting dark sectors at colliders.

Measuring rare and exclusive Higgs boson decays into light resonances (2016)
Journal Article
Chisholm, A. S., Kuttimalai, S., Nikolopoulos, K., & Spannowsky, M. (2016). Measuring rare and exclusive Higgs boson decays into light resonances. The European Physical Journal C, 76(9), Article 501. https://doi.org/10.1140/epjc/s10052-016-4345-9

We evaluate the LHC’s potential of observing Higgs boson decays into light elementary or composite resonances through their hadronic decay channels. We focus on the Higgs boson production processes with the largest cross sections, pp→h pp→h and pp→h+... Read More about Measuring rare and exclusive Higgs boson decays into light resonances.

Cosmic ray air showers from sphalerons (2016)
Journal Article
Brooijmans, G., Schichtel, P., & Spannowsky, M. (2016). Cosmic ray air showers from sphalerons. Physics Letters B, 761, 213-218. https://doi.org/10.1016/j.physletb.2016.08.030

The discovery of the Higgs boson marks a key ingredient to establish the electroweak structure of the Standard Model. Its non-abelian gauge structure gives rise to, yet unobserved, non-perturbative baryon and lepton number violating processes. We pro... Read More about Cosmic ray air showers from sphalerons.

Searching for supersymmetry scalelessly (2016)
Journal Article
Schlaffer, M., Spannowsky, M., & Weiler, A. (2016). Searching for supersymmetry scalelessly. The European Physical Journal C, 76(8), Article 457. https://doi.org/10.1140/epjc/s10052-016-4299-y

In this paper we propose a scale invariant search strategy for hadronic top or bottom plus missing energy final states. We present a method which shows flat efficiencies and background rejection factors over broad ranges of parameters and masses. The... Read More about Searching for supersymmetry scalelessly.

Cornering diphoton resonance models at the LHC (2016)
Journal Article
Backović, M., Kulkarni, S., Mariotti, A., Sessolo, E. M., & Spannowsky, M. (2016). Cornering diphoton resonance models at the LHC. Journal of High Energy Physics, 2016(08), Article 018. https://doi.org/10.1007/jhep08%282016%29018

We explore the ability of the high luminosity LHC to test models which can explain the 750 GeV diphoton excess. We focus on a wide class of models where a 750 GeV singlet scalar couples to Standard Model gauge bosons and quarks, as well as dark matte... Read More about Cornering diphoton resonance models at the LHC.

Determining the quantum numbers of simplified models in tt¯X production at the LHC (2016)
Journal Article
Dolan, M. J., Spannowsky, M., Wang, Q., & Yu, Z. (2016). Determining the quantum numbers of simplified models in tt¯X production at the LHC. Physical Review D, 94(1), Article 015025. https://doi.org/10.1103/physrevd.94.015025

Simplified models provide an avenue for characterizing and exploring new physics for large classes of UV theories. In this article we study the ability of the LHC to probe the spin and parity quantum numbers of a new light resonance X which couples p... Read More about Determining the quantum numbers of simplified models in tt¯X production at the LHC.

Higgs coupling measurements at the LHC (2016)
Journal Article
Englert, C., Kogler, R., Schulz, H., & Spannowsky, M. (2016). Higgs coupling measurements at the LHC. The European Physical Journal C, 76(7), Article 393. https://doi.org/10.1140/epjc/s10052-016-4227-1

Due to the absence of tantalising hints for new physics during the LHC’s Run 1, the extension of the Higgs sector by dimension-six operators will provide the new phenomenological standard for searches of non-resonant extensions of the Standard Model.... Read More about Higgs coupling measurements at the LHC.

The Lepton Flavour Violating Higgs Decays at the HL-LHC and the ILC (2016)
Journal Article
Banerjee, S., Bhattacherjee, B., Mitra, M., & Spannowsky, M. (2016). The Lepton Flavour Violating Higgs Decays at the HL-LHC and the ILC. Journal of High Energy Physics, 2016(07), Article 059. https://doi.org/10.1007/jhep07%282016%29059

Run-I results from the CMS collaboration show an excess of events in the decay h → μτe with a local significances of 2.4σ. This could be the first hint of flavour violation in the Higgs sector. We summarise the bounds on the flavour violating Yukawa... Read More about The Lepton Flavour Violating Higgs Decays at the HL-LHC and the ILC.

Identification of high transverse momentum top quarks in pp collisions at s√=8s=8 TeV with the ATLAS detector (2016)
Journal Article
Spannowsky, M., & collaboration, A. (2016). Identification of high transverse momentum top quarks in pp collisions at s√=8s=8 TeV with the ATLAS detector. Journal of High Energy Physics, 2016(06), Article 093. https://doi.org/10.1007/jhep06%282016%29093

This paper presents studies of the performance of several jet-substructure techniques, which are used to identify hadronically decaying top quarks with high transverse momentum contained in large-radius jets. The efficiency of identifying top quarks... Read More about Identification of high transverse momentum top quarks in pp collisions at s√=8s=8 TeV with the ATLAS detector.

New physics and signal-background interference in associated pp → HZ production (2016)
Journal Article
Englert, C., Rosenfeld, R., Spannowsky, M., & Tonero, A. (2016). New physics and signal-background interference in associated pp → HZ production. European Physical Society Letters, 114(3), Article 31001. https://doi.org/10.1209/0295-5075/114/31001

We re-investigate electroweak signal-background interference in associated Higgs production via gluon fusion in the presence of new physics in the top Higgs sector. Considering the full final state $pp \to b \bar b \ell^+\ell^-~(\ell=e,\mu)$ , we dis... Read More about New physics and signal-background interference in associated pp → HZ production.

Search for Sphalerons: IceCube vs. LHC (2016)
Journal Article
Ellis, J., Sakurai, K., & Spannowsky, M. (2016). Search for Sphalerons: IceCube vs. LHC. Journal of High Energy Physics, 2016(05), Article 085. https://doi.org/10.1007/jhep05%282016%29085

We discuss the observability of neutrino-induced sphaleron transitions in the IceCube detector, encouraged by a recent paper by Tye and Wong (TW), which argued on the basis of a Bloch wave function in the periodic sphaleron potential that such transi... Read More about Search for Sphalerons: IceCube vs. LHC.