Publications by Ulrich Haisch


Collider constraints on light pseudoscalars

JOURNAL OF HIGH ENERGY PHYSICS (2018) ARTN 178

U Haisch, JF Kamenik, A Malinauskas, M Spira


Let there be light from a second light Higgs doublet

JOURNAL OF HIGH ENERGY PHYSICS (2018) ARTN 135

U Haisch, A Malinauskas


Constraining Light-Quark Yukawa Couplings from Higgs Distributions.

Physical review letters 118 (2017) 121801-

F Bishara, U Haisch, PF Monni, E Re

We propose a novel strategy to constrain the bottom and charm Yukawa couplings by exploiting Large Hadron Collider (LHC) measurements of transverse momentum distributions in Higgs production. Our method does not rely on the reconstruction of exclusive final states or heavy-flavor tagging. Compared to other proposals, it leads to an enhanced sensitivity to the Yukawa couplings due to distortions of the differential Higgs spectra from emissions which either probe quark loops or are associated with quark-initiated production. We derive constraints using data from LHC run I, and we explore the prospects of our method at future LHC runs. Finally, we comment on the possibility of bounding the strange Yukawa coupling.


Regarding light resonance interpretations of the B decay anomalies

PHYSICAL REVIEW D 96 (2017) ARTN 055002

F Bishara, U Haisch, PF Monni


Determining the CP nature of spin-0 mediators in associated production of dark matter and t(t)over-bar pairs

JOURNAL OF HIGH ENERGY PHYSICS (2017) ARTN 131

U Haisch, P Pani, G Polesello


Towards the next generation of simplified Dark Matter models

PHYSICS OF THE DARK UNIVERSE 16 (2017) 49-70

A Albert, M Bauer, J Brooke, O Buchmueller, DG Cerdeno, M Citron, G Davies, A de Cosa, A De Roeck, A De Simone, T Du Pree, H Flaecher, M Fairbairn, J Ellis, A Grohsjean, K Hahn, U Haisch, PC Harris, VV Khoze, G Landsberg, C McCabe, B Penning, V Sanz, C Schwanenberger, P Scott, N Wardle


Constraints on the trilinear Higgs coupling from vector boson fusion and associated Higgs production at the LHC

JOURNAL OF HIGH ENERGY PHYSICS (2017) ARTN 083

W Bizon, M Gorbahn, U Haish, G Zanderighi


Simplified dark matter models with two Higgs doublets: I. Pseudoscalar mediators

JOURNAL OF HIGH ENERGY PHYSICS (2017) ARTN 138

M Bauer, U Haisch, F Kahlhoefer


Searching for new spin-0 resonances at LHCb

PHYSICAL REVIEW D 93 (2016) ARTN 055047

U Haisch, JF Kamenik


Indirect probes of the trilinear Higgs coupling: gg -> h and h -> gamma gamma

JOURNAL OF HIGH ENERGY PHYSICS (2016) ARTN 094

M Gorbahn, U Haisch


On mono-W signatures in spin-1 simplified models

PHYSICS LETTERS B 760 (2016) 207-213

U Haisch, F Kahlhoefer, TMP Tait


Stop searches in flavourful supersymmetry

JOURNAL OF HIGH ENERGY PHYSICS (2016) ARTN 080

A Crivellin, U Haisch, LC Tunstall


Anomalous triple gauge couplings from B-meson and kaon observables

JOURNAL OF HIGH ENERGY PHYSICS (2015) ARTN 018

C Bobeth, U Haisch


Simplified models for dark matter searches at the LHC

PHYSICS OF THE DARK UNIVERSE 9-10 (2015) 8-23

J Abdallah, H Araujo, A Arbey, A Ashkenazi, A Belyaev, J Berger, C Boehm, A Boveia, A Brennan, J Brooke, O Buchmueller, M Buckley, G Busoni, L Calibbi, S Chauhan, N Daci, G Davies, I De Bruyn, P De Jong, A De Roeck, K de Vries, D Del Re, A De Simone, A Di Simone, C Doglioni, M Dolan, HK Dreiner, J Ellis, S Eno, E Etzion, M Fairbairn, B Feldstein, H Flaecher, E Feng, P Fox, M-H Genest, L Gouskos, J Gramling, U Haisch, R Harnik, A Hibbs, S Hoh, W Hopkins, V Ippolito, T Jacques, F Kahlhoefer, VV Khoze, R Kirk, A Korn, K Kotov, S Kunori, G Landsberg, S Liem, T Lin, S Lowette, R Lucas, L Malgeri, S Malik, C McCabe, AS Mete, E Morgante, S Mrenna, Y Nakahama, D Newbold, K Nordstrom, P Pani, M Papucci, S Pataraia, B Penning, D Pinna, G Polesello, D Racco, E Re, AW Riotto, T Rizzo, D Salek, S Sarkar, S Schramm, P Skubic, O Slone, J Smirnov, Y Soreq, T Sumner, TMP Tait, M Thomas, I Tomalin, C Tunnell, A Vichi, T Volansky, N Weiner, SM West, M Wielers, S Worm, I Yavin, B Zaldivar, N Zhou, K Zurek


Simplified dark matter top-quark interactions at the LHC

JOURNAL OF HIGH ENERGY PHYSICS (2015) ARTN 078

U Haisch, E Re


Updated Next-to-Next-to-Leading-Order QCD Predictions for the Weak Radiative B-Meson Decays.

Physical review letters 114 (2015) 221801-

M Misiak, HM Asatrian, R Boughezal, M Czakon, T Ewerth, A Ferroglia, P Fiedler, P Gambino, C Greub, U Haisch, T Huber, M Kamiński, G Ossola, M Poradziński, A Rehman, T Schutzmeier, M Steinhauser, J Virto

Weak radiative decays of the B mesons belong to the most important flavor changing processes that provide constraints on physics at the TeV scale. In the derivation of such constraints, accurate standard model predictions for the inclusive branching ratios play a crucial role. In the current Letter we present an update of these predictions, incorporating all our results for the O(α_{s}^{2}) and lower-order perturbative corrections that have been calculated after 2006. New estimates of nonperturbative effects are taken into account, too. For the CP- and isospin-averaged branching ratios, we find B_{sγ}=(3.36±0.23)×10^{-4} and B_{dγ}=(1.73_{-0.22}^{+0.12})×10^{-5}, for E_{γ}>1.6 GeV. Both results remain in agreement with the current experimental averages. Normalizing their sum to the inclusive semileptonic branching ratio, we obtain R_{γ}≡(B_{sγ}+B_{dγ})/B_{cℓν}=(3.31±0.22)×10^{-3}. A new bound from B_{sγ} on the charged Higgs boson mass in the two-Higgs-doublet-model II reads M_{H^{±}}>480 GeV at 95% C.L.


Beauty-quark and charm-quark pair production asymmetries at LHCb

PHYSICAL REVIEW D 92 (2015)

R Gauld, U Haisch, BD Pecjak, E Re


LHC constraints on gauge boson couplings to dark matter

PHYSICAL REVIEW D 91 (2015) ARTN 074028

A Crivellin, U Haisch, A Hibbs


Determining the structure of dark-matter couplings at the LHC

Physical Review D - Particles, Fields, Gravitation and Cosmology 89 (2014)

U Haisch, A Hibbs, E Re

The latest LHC monojet searches place stringent bounds on the pp→χ̄χ cross section of dark matter. Further properties such as the dark matter mass or the precise structure of the interactions between dark matter and the standard model, however, cannot be determined in this manner. We point out that measurements of the azimuthal angle correlations between the two jets in 2j+χ̄χ events may be used to disentangle whether dark matter pair production proceeds dominantly through tree or loop diagrams. Our general observation is illustrated by considering theories in which dark matter interacts predominantly with the top quark. We show explicitly that in this case the jet-jet azimuthal angle difference is a gold-plated observable to probe the Lorentz structure of the couplings of dark matter to top quarks, thus testing the CP nature of the particle mediating these interactions. © 2014 American Physical Society.


An explicit Z (')-boson explanation of the B -> K (au) mu (+) mu (-) anomaly

JOURNAL OF HIGH ENERGY PHYSICS (2014) ARTN 069

R Gauld, F Goertz, U Haisch

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