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| preprints:2015 [2015/11/04 15:47] – marting | preprints:2015 [2016/03/10 15:57] – marting |
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| |< 100% 20% 80% >| | === TTP Preprints 2015=== |
| ^ QCD corrections to ZZ production in gluon fusion at the LHC ^^ | {{page>preprints:navigation&nofooter}} |
| | Autoren: | **F. Caola, K. Melnikov, R. Rontsch, L. Tancredi** | | {{namespace>preprints:2015&nofooter&rsort}} |
| | Downloads: | {{preprints:ttp15-035.pdf|PDF}} \\ {{preprints:ttp15-035.ps|PostScript}} | | |
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| |< 100% 20% 80% >| | |
| ^ Integration by parts identities in integer numbers of dimensions. A criterion for decoupling systems of differential equations ^^ | |
| | Autoren: | **Lorenzo Tancredi** | | |
| | Downloads: | {{preprints:ttp15-034.pdf|PDF}} \\ {{preprints:ttp15-034.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1509.03330|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Charge and color breaking constraints in the Minimal Supersymmetric Standard Model associated with the bottom Yukawa coupling ^^ | |
| | Autoren: | **Wolfgang Gregor Hollik** | | |
| | Downloads: | {{preprints:ttp15-033.pdf|PDF}} \\ {{preprints:ttp15-033.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1508.07201|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Phenomenological aspects of flavoured dark matter ^^ | |
| | Autoren: | **Monika Blanke** | | |
| | Downloads: | {{preprints:ttp15-032.pdf|PDF}} \\ {{preprints:ttp15-032.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1508.06179|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Top-Yukawa effects on the beta-function of the strong coupling in the SM at four-loop level ^^ | |
| | Autoren: | **M. F. Zoller** | | |
| | Downloads: | {{preprints:ttp15-031.pdf|PDF}} \\ {{preprints:ttp15-031.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1508.03624|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Fiducial volume cross sections for Higgs boson production in association with a jet at NNLO in perturbative QCD ^^ | |
| | Autoren: | **F. Caola, K. Melnikov, M. Schulze** | | |
| | Downloads: | {{preprints:ttp15-030.pdf|PDF}} \\ {{preprints:ttp15-030.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1508.02684|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ $\Gamma(H\to b\bar{b})$ to order $\alpha\alpha_s$ ^^ | |
| | Autoren: | **Luminita Mihaila, Barbara Schmidt, Matthias Steinhauser** | | |
| | Downloads: | {{preprints:ttp15-029.pdf|PDF}} \\ {{preprints:ttp15-029.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1509.02294|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ The $O(a_s^3)$ Heavy Flavor Contributions to the Charged Current Structure Function $x F_3(x, Q^2)$ at Large Momentum Transfer ^^ | |
| | Autoren: | **Arnd Behring, Johannes Blümlein, Abilio De Freitas, Alexander Hasselhuhn, Andreas von Manteuffel, Carsten Schneider** | | |
| | Downloads: | {{preprints:ttp15-028.pdf|PDF}} \\ {{preprints:ttp15-028.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1508.01449|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ CP Violation in D0->KSKS ^^ | |
| | Autoren: | **Ulrich Nierste, Stefan Schacht ** | | |
| | Downloads: | {{preprints:ttp15-027.pdf|PDF}} \\ {{preprints:ttp15-027.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1508.00074|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Higgs boson pair production: top quark mass effects at NLO and NNLO ^^ | |
| | Autoren: | **Jonathan Grigo, Jens Hoff, Matthias Steinhauser** | | |
| | Downloads: | {{preprints:ttp15-026.pdf|PDF}} \\ {{preprints:ttp15-026.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1508.00909|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Light-by-light-type corrections to the muon anomalous magnetic moment at four-loop order ^^ | |
| | Autoren: | **Alexander Kurz, Tao Liu, Peter Marquard, Alexander V. Smirnov, Vladimir A. Smirnov, Matthias Steinhauser ** | | |
| | Downloads: | {{preprints:ttp15-025.pdf|PDF}} \\ {{preprints:ttp15-025.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1508.00901|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Leptogenesis in an SU(5) x A5 Golden Ratio Flavour Model:Addendum ^^ | |
| | Autoren: | **Julia Gehrlein, Serguey T. Petcov, Martin Spinrath, Xinyi Zhang** | | |
| | Veroeffentlicht: |** Nucl.Phys. B899 617-630 2015 ** | | |
| | Downloads: | {{preprints:ttp15-024.pdf|PDF}} \\ {{preprints:ttp15-024.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1508.07930|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Quark flavour observables in the Littlest Higgs model with T-parity after LHC Run 1 ^^ | |
| | Autoren: | **Monika Blanke, Andrzej J. Buras, Stefan Recksiegel** | | |
| | Downloads: | {{preprints:ttp15-023.pdf|PDF}} \\ {{preprints:ttp15-023.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1507.06316|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Renormalisation Group Corrections to Neutrino Mass Sum Rules ^^ | |
| | Autoren: | **J. Gehrlein, A. Merle, M. Spinrath** | | |
| | Veroeffentlicht: |** JHEP 1509 066 2015 ** | | |
| | Downloads: | {{preprints:ttp15-022.pdf|PDF}} \\ {{preprints:ttp15-022.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1506.06139|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Next-to-next-to-next-to-leading order QCD prediction for the top anti-top S-wave pair production cross section near threshold in $e^+ e^-$ annihilation ^^ | |
| | Autoren: | **Martin Beneke, Yuichiro Kiyo, Peter Marquard, Alexander Penin, Jan Piclum, and Matthias Steinhauser** | | |
| | Downloads: | {{preprints:ttp15-021.pdf|PDF}} \\ {{preprints:ttp15-021.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1506.06864|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Sum Rules of Charm CP Asymmetries beyond the SU(3)F Limit ^^ | |
| | Autoren: | **Sarah M\"uller, Ulrich Nierste, Stefan Schacht** | | |
| | Downloads: | {{preprints:ttp15-020.pdf|PDF}} \\ {{preprints:ttp15-020.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1506.04121|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Exact N$^3$LO results for $q q^\prime\to H +X$ ^^ | |
| | Autoren: | **Chihaya Anzai, Alexander Hasselhuhn, Maik H\"oschele, Jens Hoff, William Kilgore, Matthias Steinhauser, Takahiro Ueda** | | |
| | Veroeffentlicht: |** JHEP 1507 140 2015 ** | | |
| | Downloads: | {{preprints:ttp15-019.pdf|PDF}} \\ {{preprints:ttp15-019.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1506.02674|arXiv]] | | |
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| <hidden Lepton-flavour violating B decays in generic Z' models > LHCb has reported deviations from the SM expectations in $B\to K^* \mu^+\mu^-$ angular observables, in $B_s\to\phi\mu^+\mu^-$ and in ratio $R(K)=Br[B\to K \mu^+\mu^-]/Br[B\to K e^+e^-]$. For all three decays, a heavy neutral gauge boson mediating $b\to s\mu^+\mu^-$ transitions is a prime candidate for an explanation. As $R(K)$ measures violation of lepton-flavour universality, it is interesting to examine the possibility that also lepton flavour is violated. In this article, we investigate the perspectives to discover the lepton-flavour violating modes $B\to K^{(*)}\tau^\pm\mu^\mp$, $B_s\to \tau^\pm\mu^\mp$ and $B\to K^{(*)} \mu^\pm e^\mp$, $B_s\to \mu^\pm e^\mp$. For this purpose we consider a simplified model in which new-physics effects originate from an additional neutral gauge boson ($Z^\prime$) with generic couplings to quarks and leptons. The constraints from $\tau\to3\mu$, $\tau\to\mu\nu\bar{\nu}$, $\mu\to e\gamma$, $g_\mu-2$, neutrino trident production, $Z\to\ell^+\ell^{\prime-}$, semi-leptonic $b\to s\mu^+\mu^-$ decays and $B_s$--$\overline{B}_s$ mixing are examined. Taking into account these limits, we determine upper bounds on the decay rates of $B\to K^{(*)}\tau^\pm\mu^\mp$, $B_s\to \tau^\pm\mu^\mp$, $B\to K^{(*)}\mu^\pm e^\mp$ and $B_s\to \mu^\pm e^\mp$ as a function of fine-tuning in $B_s$--$\overline{B}_s$ mixing. We find that for a significant degree of fine-tuning the effect in all considered decays with $\tau\mu$ final states can be sizable (leading to branching ratios of the order of $\times 10^{-6}$). For $\mu e$ final states, $B_s\to \mu^\pm e^\mp$ is strongly suppressed and only $B\to K^{(*)} \mu^\pm e^\mp$ can be relevant (of the order of $\times 10^{-7}$). However, this is only possible in a region of the parameter space disfavoured by the current LHCb data on $b\to s\mu^+\mu^-$ transitions. | |
| </hidden> | |
| |< 100% 20% 80% >| | |
| | Autoren: | **Andreas Crivellin, Lars Hofer, Joaquim Matias, Ulrich Nierste, Stefan Pokorski, Janusz Rosiek** | | |
| | Veroeffentlicht: |** Phys.Rev. D92 (2015) 5, 054013 D92 5, 054013 2015 ** | | |
| | Downloads: | {{preprints:ttp15-018.pdf|PDF}} \\ {{preprints:ttp15-018.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1504.07928|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Higgs boson production in association with a jet at next-to-next-to-leading order ^^ | |
| | Autoren: | **R. Boughezal, F. Caola, K. Melnikov, F. Petriello, M. Schulze** | | |
| | Veroeffentlicht: |** Phys.Rev.Lett. 115 8, 082003 2015 ** | | |
| | Downloads: | {{preprints:ttp15-017.pdf|PDF}} \\ {{preprints:ttp15-017.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1504.07922|arXiv]] | | |
| | |
| <hidden Neutrino Mixing from SUSY breaking > We propose a mechanism to generate the neutrino mixing matrix from | |
| supersymmetric threshold corrections. Flavor violating soft breaking terms | |
| induce flavor changing self-energies that give a finite renormalization to the | |
| mixing matrix. The described threshold corrections get enhanced in case of | |
| quasi-degenerate neutrino masses. In this scenario, we adjust potentially | |
| arbitrary soft breaking parameters in a way to reproduce the observed neutrino | |
| mixing at one loop working with non-minimal flavor violating soft parameters. | |
| To incorporate small neutrino masses already at tree-level via a type I seesaw | |
| mechanism, we extend the Minimal Supersymmetric Standard Model with singlet | |
| Majorana neutrinos. The radiative corrections do not decouple with the scale of | |
| Supersymmetry and persist when the spectrum is shifted to higher values. | |
| Moreover, the mixing matrix renormalization with flavor-changing self-energies | |
| is not restricted to supersymmetric theories and give similar results in any | |
| theory with new flavor structures. | |
| </hidden> | |
| |< 100% 20% 80% >| | |
| | Autoren: | **Wolfgang G. Hollik** | | |
| | Veroeffentlicht: |** None None None None PoS CORFU2014 (2015) 077 ** | | |
| | Downloads: | {{preprints:ttp15-016.pdf|PDF}} \\ {{preprints:ttp15-016.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1504.03270|arXiv]] | | |
| | |
| |< 100% 20% 80% >| | |
| ^ Topological amplitudes in D decays to two pseudoscalars: a global analysis with linear SU(3)F breaking ^^ | |
| | Autoren: | **Sarah Müller, Ulrich Nierste, Stefan Schacht** | | |
| | Veroeffentlicht: |** Phys.Rev. D92 1, 014004 2015 ** | | |
| | Downloads: | {{preprints:ttp15-015.pdf|PDF}} \\ {{preprints:ttp15-015.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1503.06759|arXiv]] | | |
| | |
| |< 100% 20% 80% >| | |
| ^ The two-loop helicity amplitudes for gg -> V V' -> 4-leptons ^^ | |
| | Autoren: | **A. von Manteuffel, L. Tancredi** | | |
| | Veroeffentlicht: |** JHEP 1506 197 2015 ** | | |
| | Downloads: | {{preprints:ttp15-014.pdf|PDF}} \\ {{preprints:ttp15-014.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1503.08835|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Two-loop helciity amplitudes for the production of two off-shell electroweak bosons in gluon fusion ^^ | |
| | Autoren: | **F. Caola, J. Henn, K. Melnikov, A. Smirnov, V. Smirnov** | | |
| | Veroeffentlicht: |** JHEP 1506 129 2015 ** | | |
| | Downloads: | {{preprints:ttp15-013.pdf|PDF}} \\ {{preprints:ttp15-013.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1503.08759|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ The Strong CP Problem and Discrete Symmetries ^^ | |
| | Autoren: | **Martin Spinrath** | | |
| | Veroeffentlicht: |** Mod.Phys.Lett. A30 19,1530014 2015 ** | | |
| | Downloads: | {{preprints:ttp15-012.pdf|PDF}} \\ {{preprints:ttp15-012.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1503.03659|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ The two-loop helicity amplitudes for qqb -> V V' -> 4-leptons ^^ | |
| | Autoren: | **T. Gehrmann, A. von Manteuffel, L. Tancredi** | | |
| | Downloads: | {{preprints:ttp15-011.pdf|PDF}} \\ {{preprints:ttp15-011.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1503.04812|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Penguin contributions to CP phases in B_{d,s} decays to charmonium ^^ | |
| | Autoren: | **Philipp Frings, Ulrich Nierste , and Martin Wiebusch** | | |
| | Veroeffentlicht: |** Phys.Rev.Lett. 115 061802 2015 ** | | |
| | Downloads: | {{preprints:ttp15-010.pdf|PDF}} \\ {{preprints:ttp15-010.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1503.00859|arXiv]] | | |
| | |
| |< 100% 20% 80% >| | |
| ^ Production of two Z bosons in gluon fusion in the heavy top quark approximation ^^ | |
| | Autoren: | **Kirill Melnikov, Matthew Dowling** | | |
| | Veroeffentlicht: |** Phys.Lett. B744 43-47 2015 ** | | |
| | Downloads: | {{preprints:ttp15-009.pdf|PDF}} \\ {{preprints:ttp15-009.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1503.01274|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ The (Q_7,Q_{1,2}) contribution to $\bar B\to X_s\gamma$ at O(alpha_s^2) ^^ | |
| | Autoren: | **Michak Czakon, Paul Fiedler, Tobias Huber, Mikolaj Misiak, Thomas Schutzmeier, Matthias Steinhauser** | | |
| | Veroeffentlicht: |** JHEP 1504 168 2015 ** | | |
| | Downloads: | {{preprints:ttp15-008.pdf|PDF}} \\ {{preprints:ttp15-008.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1503.01791|arXiv]] | | |
| | |
| |< 100% 20% 80% >| | |
| ^ Updated NNLO QCD predictions for the weak radiative $B$-meson decays ^^ | |
| | Autoren: | **M. Misiak, M. Steinhauser et al.** | | |
| | Veroeffentlicht: |** Phys.Rev.Lett. 114 22, 221801 2015 ** | | |
| | Downloads: | {{preprints:ttp15-007.pdf|PDF}} \\ {{preprints:ttp15-007.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1503.01789|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Penguin contributions to CP phases in B_{d,s} decays to charmonium ^^ | |
| | Autoren: | **Philipp Frings, Ulrich Nierste , and Martin Wiebusch** | | |
| | Veroeffentlicht: |** Phys.Rev.Lett. 115 061802 2015 ** | | |
| | Downloads: | {{preprints:ttp15-006.pdf|PDF}} \\ {{preprints:ttp15-006.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1503.00859|arXiv]] | | |
| | |
| |< 100% 20% 80% >| | |
| ^ Decoupling of heavy quarks at four loops and effective Higgs-fermion coupling ^^ | |
| | Autoren: | **Tao Liu and Matthias Steinhauser ** | | |
| | Veroeffentlicht: |** Phys.Lett. B746 330-334 2015 ** | | |
| | Downloads: | {{preprints:ttp15-005.pdf|PDF}} \\ {{preprints:ttp15-005.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1502.04719|arXiv]] | | |
| | |
| <hidden Non-minimally flavour violating dark matter > Flavour symmetries provide an appealing mechanism to stabilize the dark matter particle. I present a simple model of quark flavoured dark matter that goes beyond the framework of minimal flavour violation. I discuss the phenomenological implications for direct and indirect dark matter detection experiments, high energy collider searches as well as flavour violating precision data. | |
| </hidden> | |
| |< 100% 20% 80% >| | |
| | Autoren: | **Monika Blanke** | | |
| | Veroeffentlicht: |** J.Phys.Conf.Ser. 631 012022 2015 ** | | |
| | Downloads: | {{preprints:ttp15-004.pdf|PDF}} \\ {{preprints:ttp15-004.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1502.03385|arXiv]] | | |
| | |
| |< 100% 20% 80% >| | |
| ^ Leptogenesis in an SU(5) x A5 Golden Ratio Flavour Model ^^ | |
| | Autoren: | **Julia Gehrlein, Serguey T. Petcov, Martin Spinrath, Xinyi Zhang** | | |
| | Veroeffentlicht: |** Nucl.Phys. B896 311-329 2015 ** | | |
| | Downloads: | {{preprints:ttp15-003.pdf|PDF}} \\ {{preprints:ttp15-003.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1502.00110|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Massless Propagators, R(s) and Multiloop QCD ^^ | |
| | Autoren: | **P. A. Baikov, K. G. Chetyrkin, J. H. K\"uhn** | | |
| | Veroeffentlicht: |** Nucl.Part.Phys.Proc. 261-262 3-18 2015 ** | | |
| | Downloads: | {{preprints:ttp15-002.pdf|PDF}} \\ {{preprints:ttp15-002.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1501.06739|arXiv]] | | |
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| |< 100% 20% 80% >| | |
| ^ Quark mass relations to four-loop order ^^ | |
| | Autoren: | **Peter Marquard, Alexander V. Smirnov, Vladimir A. Smirnov, Matthias Steinhauser** | | |
| | Veroeffentlicht: |** Phys.Rev.Lett. 114 14, 142002 2015 ** | | |
| | Downloads: | {{preprints:ttp15-001.pdf|PDF}} \\ {{preprints:ttp15-001.ps|PostScript}} \\ [[http://de.arxiv.org/abs/1502.01030|arXiv]] | | |
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