# Publications database

 2018-11-1917:34 [PUBDB-2018-04638] Talk (non-conference) H1 Collaboration Exclusive Photoproduction of $ρ,ρ’$ at HERA 6th Workshop on QCD and Diffraction, Institute of Nuclear Physics of the Polish Academy of SciencesCrakow, Institute of Nuclear Physics of the Polish Academy of Sciences, Poland, 15 Nov 2018 - 17 Nov 2018   OpenAccess: PDF PDF (PDFA); 2018-11-1917:16 [PUBDB-2018-04637] Conference Presentation ZEUS Collaboration Charm and beauty at HERA QCD@LHC 2018 International Conference, QCD@LHC 2018, DresdenDresden, Germany, 27 Aug 2018 - 31 Aug 2018   OpenAccess: PDF PDF (PDFA); 2018-11-1916:53 [PUBDB-2018-04636] Report/Journal Article Schaefer, S. New extended interpolating fields built from three-dimensional fermions [DESY-18-091; arXiv:1807.08714] Physical review 98(9), 094506 (2018) [10.1103/PhysRevD.98.094506]   New extended interpolating operators made of quenched three dimensional fermions are introduced in the context of lattice QCD. The mass of the 3D fermions can be tuned in a controlled way to find a better overlap of the extended operators with the states of interest. [...] Restricted: PDF PDF (PDFA); 2018-11-1916:45 [PUBDB-2018-04635] Report/Journal Article et al Periastron Observations of TeV Gamma-Ray Emission from a Binary System with a 50-year Period [arXiv:1810.05271] The astrophysical journal 867(1), L19 (2018) [10.3847/2041-8213/aae70e]   We report on observations of the pulsar/Be star binary system PSR J2032+4127/MT91 213 in the energy range between $100\,\mathrm{GeV}$ and $20\,\mathrm{TeV}$ with the Very Energetic Radiation Imaging Telescope Array and Major Atmospheric Gamma Imaging Cherenkov telescope arrays. The binary orbit has a period of approximately 50 years, with the most recent periastron occurring on 2017 November 13 [...] Restricted: PDF PDF (PDFA); 2018-11-1916:30 [PUBDB-2018-04634] Conference Presentation H1 Collaboration Exclusive Photoproduction of $2π^+2π^−$ at HERA XXVI International Workshop on Deep Inelastic Scattering and Related Subjects, DIS 2018, KobeKobe, Japan, 16 Apr 2018 - 20 Apr 2018   OpenAccess: PDF PDF (PDFA); 2018-11-1916:29 [PUBDB-2018-04633] Preprint/Report et al The broad-band properties of the intermediate synchrotron peaked BL Lac S2 0109+22 from radio to VHE gamma rays [arXiv:1807.02095]   The MAGIC telescopes observed S2 0109+22 in 2015 July during its flaring activity in high energy gamma rays observed by Fermi-LAT. We analyse the MAGIC data to characterise the very high energy (VHE) gamma-ray emission of S2 0109+22, which belongs to the subclass of intermediate synchrotron peak (ISP) BL Lac objects. [...] OpenAccess: PDF PDF (PDFA); 2018-11-1916:15 [PUBDB-2018-04632] Conference Presentation (Invited) Jegerlehner, F. $a_\mu$(had,VP) update Workshop on hadronic vacuum polarization contributions to muon g-2, TsukubaTsukuba, Japan, 12 Feb 2018 - 14 Feb 2018 2018-11-1916:13 [PUBDB-2018-04631] Conference Presentation Jegerlehner, F. The muon g-2 and $\alpha(M_Z^2)$: the hadronic part MITP workshop "The Evaluation of the Leading Hadronic Contribution to the Muon Anomalous Magnetic Moment", MainzMainz, Germany, 19 Feb 2018 - 23 Feb 2018 2018-11-1916:09 [PUBDB-2018-04630] Conference Presentation (Invited) Jegerlehner, F. The Hierarchy Problem and the Cosmological Constant Problem Revisited Naturalness, Hierarchy and Fine Tuning Workshop, AachenAachen, Germany, 28 Feb 2018 - 2 Mar 2018 2018-11-1915:53 [PUBDB-2018-04627] Conference Presentation (Invited) Jegerlehner, F. The Role of Mesons in Muon g-2 15th International Workshop on Meson Physics, KrakowKrakow, Poland, 7 Jun 2018 - 12 Jun 2018