Ulrich Nierste
Presented at 7th Workshop on the CKM Unitarity Triangle (CKM 2012)
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TTP12-050 Gluino pair production at threshold
P. Marquard
Proceedings for the 36th International Conference on High Energy Physics, 4-11 July 2012,Melbourne, Australia
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TTP12-049 NRQCD matching coefficient at next-to-next-to-next-to-leading order
P. Marquard
Proceedings for the 36th International Conference on High Energy Physics, 4-11 July 2012,Melbourne, Australia.
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TTP12-048 Penguin diagrams in the charm sector in K+ –&gt; Pi nu nu
Jorge Mondéjar and Jörg Rittinger
Nucl.Phys. B871 485-511 2013
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TTP12-047 A QCD description of the ATLAS jet veto measurement
Y. Hatta, C. Marquet, C. Royon, G. Soyez, T. Ueda, D. Werder
Phys. Rev. D 87 054016 2013
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TTP12-046 Complete three-loop QCD corrections to the decay H -&gt; gamma gamma
P. Maierhöfer, P. Marquard
Phys.Lett. B721 131-135 2013
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TTP12-045 Higgs boson production at the LHC: NNLO partonic cross sections through order $\epsilon$ and convolutions with splitting functions to N$^3$LO
Maik Höschele, Jens Hoff, Alexey Pak, Matthias Steinhauser, Takahiro Ueda
Phys.Lett. B721 244-251 2013
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TTP12-044 Neutralino dark matter and the Fermi gamma-ray lines

TTP12-044 Neutralino dark matter and the Fermi gamma-ray lines

Motivated by recent claims of lines in the Fermi gamma-ray spectrum, we critically examine means of enhancing neutralino annihilation into neutral gauge bosons. The signal can be boosted while remaining consistent with continuum photon constraints if a new singlet-like pseudoscalar is present. We consider singlet extensions of the MSSM, focusing on the NMSSM, where a well-tempered' neutralino can explain the lines while remaining consistent with current constraints. We adopt a complementary numerical and analytic approach throughout in order to gain intuition for the underlying physics. The scenario requires a rich spectrum of light neutralinos and charginos leading to characteristic phenomenological signatures at the LHC whose properties we explore. Future direct detection prospects are excellent, with sizeable spin-dependent and spin-independent cross-sections.

 Guillaume Chalons, Matthew J. Dolan, Christopher McCabe JCAP 1302 016 2013 PDF PostScript arXiv
TTP12-043 Heavy MSSM Higgs production at the LHC and decays to WW,ZZ at higher orders
Patrick GonzÃÂ¡lez, Sophy Palmer, Martin Wiebusch, Karina Williams
Eur.Phys.J. C73 2367 2013
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TTP12-042 Full O(alpha) electroweak radiative corrections to e+ e- -&gt; t tbar gamma with GRACE-Loop
P.H. Khiem, J. Fujimoto, T. Ishikawa, T. Kaneko, K. Kato, Y. Kurihara, Y. Shimizu, T. Ueda, J.A.M. Vermaseren, Y. Yasui
Eur.Phys.J. C73 2400 2013
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TTP12-041 Kinetic operator effects in $\bar{B}\to X_c\ell\nu$ at $O(\alpha_s)$
Andrea Alberti, Thorsten Ewerth, Paolo Gambino, Soumitra Nandi
Nucl.Phys. B870 16-29 2013
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TTP12-040 Structure and prospects of the simplest SO(10) GUTs
Stefano Bertolini, Luca Di Luzio, Michal Malinsky
AIP Conf.Proc. 1534 293-301 2012
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TTP12-039 The $\langle VVA \rangle$ correlator at three-loops in perturbative QCD
Jorge Mondejar, Kirill Melnikov
Phys.Lett. B718 1364-1368 2013
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TTP12-038 Gauge coupling beta functions in the Standard Model
Luminita N. Mihaila, Jens Salomon, Matthias Steinhauser
PoS LL2012 043 2012
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TTP12-037 Precision calculations for Higgs-boson production at hadron colliders
Nikolai Zerf
PoS LL2012 042 2012
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TTP12-036 Vacuum stability in the SM and the three-loop $\beta$-function for the Higgs self-interaction

TTP12-036 Vacuum stability in the SM and the three-loop $\beta$-function for the Higgs self-interaction

In this article the stability of the Standard Model (SM) vacuum in the presence of radiative corrections and for a Higgs boson with a mass in the vicinity of $125$ GeV is discussed. The central piece in this discussion will be the Higgs self-interaction $\lambda$ and its evolution with the energy scale of a given physical process. This is described by the $\beta$-function to which we recently computed analytically the dominant three-loop contributions. These are mainly the QCD and top-Yukawa corrections as well as the contributions from the Higgs self-interaction itself. We will see that for a Higgs boson with a mass of about $125$ GeV the question whether the SM vacuum is stable and therefore whether the SM could be valid up to Planck scale cannot be answered with certainty due to large experimental uncertainties, mainly in the top quark mass.

 M. F. Zoller Subnucl.Ser. 50 557-566 2014 PDF PostScript arXiv

TTP12-035 The Dimensional Recurrence and Analyticity Method for Multicomponent Master Integrals: Using Unitarity Cuts to Construct Homogeneous Solutions

TTP12-035 The Dimensional Recurrence and Analyticity Method for Multicomponent Master Integrals: Using Unitarity Cuts to Construct Homogeneous Solutions

We consider the application of the DRA method to the case of several master integrals in a given sector. We establish a connection between the homogeneous part of dimensional recurrence and maximal unitarity cuts of the corresponding integrals: a maximally cut master integral appears to be a solution of the homogeneous part of the dimensional recurrence relation. This observation allows us to make a necessary step of the DRA method, the construction of the general solution of the homogeneous equation, which, in this case, is a coupled system of difference equations.

 Roman N. Lee, Vladimir A. Smirnov JHEP 1212 104 2012 PDF PostScript arXiv
TTP12-034 Impact of a Higgs boson at a mass of 126 GeV on the standard model with three and four fermion generations
Otto Eberhardt, Geoffrey Herbert, Heiko Lacker, Alexander Lenz, Andreas Menzel, Ulrich Nierste, Martin Wiebusch
Phys. Rev. Lett. 109 241802 2012
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TTP12-033 Tree-level contributions to Bbar to X_s gamma
Maciej Kaminski, Mikolaj Misiak, Michal Poradzinski
Phys.Rev. D86 094004 2012
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TTP12-032 Analysis of the Higgs potentials for two doublets and a singlet
G. Chalons, F. Domingo
Phys.Rev. D86 115024 2012
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TTP12-031 Short distance $D^0$–$\bar D^0$ mixing
Markus Bobrowski, Alexander Lenz, Thomas Rauh
Presented at Conference: C12-05-14
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TTP12-030 Renormalization constants and beta functions for the gauge couplings of the Luminita N. Mihaila, Jens Salomon, Matthias Steinhauser
Luminita N. Mihaila, Jens Salomon, Matthias Steinhauser
Phys.Rev. D86 096008 2012
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TTP12-029 $\bar{B}\to X_s \gamma$ in the Two Higgs Doublet Model up to Next-to-Next-to-Leading Order in QCD
Thomas Hermann, Mikolaj Misiak, Matthias Steinhauser
JHEP 1211 036 2012
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TTP12-028 Electroweak accuracy in V-pair production at the LHC
A. Bierweiler, T. Kasprzik, J.H. Kühn
PoS ICHEP2012 078 2013
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TTP12-027 Electroweak corrections to W-pair production at the LHC
A. Bierweiler, T. Kasprzik, J.H. K\„uhn, S. Uccirati
JHEP 1211 093 2012
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TTP12-026 Supersymmetric next-to-next-to-leading order corrections to Higgs boson production in gluon fusion
Alexey Pak, Matthias Steinhauser, Nikolai Zerf
JHEP 1209 (2012) 118 1209 118 2012
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TTP12-025 OPE of the energy momentum tensor correlator in massless QCD
M. F. Zoller, K. G. Chetyrkin
JHEP 1212 119 2012
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TTP12-024 Numerical Computation of p-values with myFitter
Martin Wiebusch
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TTP12-023 Status of the fourth fermion generation before ICHEP2012: Higgs data and electroweak precision observables
Otto Eberhardt, Alexander Lenz, Andreas Menzel, Ulrich Nierste, Martin Wiebusch
Phys.Rev. D86 074014 2012
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TTP12-022 Decoupling constant for $\alpha_s$ and the effective gluon-Higgs coupling to three loops in supersymmetric QCD
Alexander Kurz, Matthias Steinhauser, Nikolai Zerf
JHEP 1207 138 2012
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TTP12-021 The relation between the QED charge renormalized in MSbar and on-shell schemes at four loops, the QED on-shell beta-function at five loops and asymptotic contributions to the muon anomaly

TTP12-021 The relation between the QED charge renormalized in MSbar and on-shell schemes at four loops, the QED on-shell beta-function at five loops and asymptotic contributions to the muon anomaly

In this paper we compute the four-loop corrections to the QED photon

self-energy $\Pi(Q^2)$ in the two limits of $q = 0$ and $Q^2 \to \infty$. These results are used to explicitly construct the conversion
relations between the QED charge renormalized in on-shell(OS) and $\MSbar$
scheme. Using these relations and results of Baikov et al. \cite{Baikov:2012zm} we
construct the momentum dependent part of $\Pi(Q^2,m,\alpha)$ at
large $Q^2$ at five loops in both $\MSbar$ and OS schemes.  As a direct
consequence we arrive at the full result for the QED $\beta$-function
in the OS scheme at five loops. These results are applied, in turn, to
analytically evaluate a class of asymptotic contributions to the muon
anomaly at five and six loops.`
 P. A. Baikov, K. G. Chetyrkin, J. H. Kühn and C. Sturm Nucl. Phys. B867 182-202\ 2013 25 pages, 6 figures; v2: final published version PDF PostScript arXiv
TTP12-020 Moments of heavy quark correlators with two masses: exact mass dependence to three loops
Jonathan Grigo, Jens Hoff, Peter Marquard, Matthias Steinhauser
Nucl.Phys. B864 580-596 2012
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TTP12-019 Massless two-loop self-energy diagram: Historical review

TTP12-019 Massless two-loop self-energy diagram: Historical review

This class of diagrams has numerous applications. Many interesting results have been obtained for it.

 A.G.Grozin Int.J.Mod.Phys. A27 1230018 2012 PDF PostScript arXiv
TTP12-018 Vector Correlator in Massless QCD at Order O(alpha_s4) and the QED beta-function at five loop
P. A. Baikov, K. G. Chetyrkin, J. H. K&uuml;hn and J. Rittinger
JHEP 1207 017 2012
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TTP12-017 Adler Function, Sum Rules and Crewther Relation of Order O(alpha_s4): the Singlet Case
P. A. Baikov, K. G. Chetyrkin, J. H. K&uuml;hn and J. Rittinger
Phys. Lett. B714 62-65 2012
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TTP12-016 Towards a New Minimal SO(10) Unification
Stefano Bertolini, Luca Di Luzio, Michal Malinsky
AIP Conf.Proc. 1467 37-44 2012
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TTP12-015 Expansion by regions: revealing potential and Glauber regions automatically
Bernd Jantzen, Alexander V. Smirnov and Vladimir A. Smirnov
Eur.Phys.J. C72 2139 2012
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TTP12-014 Simultaneous decoupling of bottom and charm quarks
Andrey Grozin, Maik Höschele, Jens Hoff, Matthias Steinhauser
PoS LL2012 032 2012
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TTP12-013 Quantum Chromodynamics

TTP12-013 Quantum Chromodynamics

The classical Lagrangian of chromodynamics, its quantization in the perturbation theory framework, and renormalization form the subject of these lectures. Symmetries of the theory are discussed. The dependence of the coupling constant \alpha_s on the renormalization scale \mu is considered in detail.

 A.G.Grozin Baikal summer school 2011 PDF PostScript arXiv
TTP12-012 Three-loop $\beta$-functions for top-Yukawa and the Higgs self-interaction in the Standard Model
K. G. Chetyrkin, M. F. Zoller
JHEP 1206 033 2012
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TTP12-011 Gamma-ray lines constraints in the NMSSM

TTP12-011 Gamma-ray lines constraints in the NMSSM

We present the computation of the loop-induced self-annihilation of dark matter particles into two photons in the framework of the NMSSM. This process is a theoretically clean observable with a „smoking-gun“ signature but is experimentally very challenging to detect. The rates were computed with the help of the SloopS program, an automatic code initially designed for the evaluation of processes at the one-loop level in the MSSM. We focused on a light neutralino scenario and discuss how the signal can be enhanced in the NMSSM with respect to the MSSM and then compared with the present limits given by the dedicated search of the FERMI-LAT satellite on the monochromatic gamma lines.

 Guillaume Chalons PDF PostScript arXiv
TTP12-010 Joint analysis of Higgs decays and electroweak precision observables in the Standard Model with a sequential fourth generation
Otto Eberhardt, Geoffrey Herbert, Heiko Lacker, Alexander Lenz, Andreas Menzel, Ulrich Nierste, Martin Wiebusch
Phys. Rev. D 86 013011 2012
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TTP12-009 $R(s)$ and Z decay in order $\alpha_s^4$: complete results
P. A. Baikov, K. G. Chetyrkin, J. H. Kühn, J. Rittinger
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TTP12-008 FORM Version 4.0
J. Kuipers, T. Ueda, J.A.M. Vermaseren and J. Vollinga
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TTP12-007 New Physics in B–B-bar mixing in the light of recent LHCb data
A. Lenz, U. Nierste, J. Charles, S. Descotes-Genon, H. Lacker, S. Monteil, V. Niess, S. T'Jampens
Phys.Rev. D86 033008 2012
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TTP12-006 Gamma(K -&gt; e nu)/Gamma(K -&gt; mu nu) in the Minimal Supersymmetric Standard Model
Jennifer Girrbach, Ulrich Nierste
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TTP12-005 MSSM corrections to the top-antitop quark forward backward asymmetry at the Tevatron
Stefan Berge, Doreen Wackeroth, Martin Wiebusch
Eur.Phys.J. C72 2114 2012
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TTP12-004 Seesaw Scale in the Minimal Renormalizable SO(10) Grand Unification
Stefano Bertolini, Luca Di Luzio, Michal Malinsky
Phys. Rev. D 85 22 2012
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TTP12-003 Gauge Coupling Beta Functions in the Standard Model to Three Loops
Luminita N. Mihaila, Jens Salomon, Matthias Steinhauser
Phys.Rev.Lett. 108 151602 2012
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TTP12-002 CRunDec: a C++ package for running and decoupling of the strong coupling and quark masses
Barbara Schmidt, Matthias Steinhauser
Comput.Phys.Commun. 183 1845-1848 2012
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