CERN Accelerating science

CERN-TH

Darreres entrades:
2015-07-31
07:35
Relaxing the Electroweak Scale: the Role of Broken dS Symmetry / Patil, Subodh P ; Schwaller, Pedro
Recently, a novel mechanism to address the hierarchy problem has been proposed [1], where the hierarchy between weak scale physics and any putative `cutoff' $M$ is translated into a parametrically large field excursion for the so-called relaxion field, driving the Higgs mass to values much less than $M$ through cosmological dynamics. [...]
arXiv:1507.08649 ; CERN-PH-TH-2015-179.
- 2015. - 16 p.
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2015-07-30
07:53
Global Parton Distributions for the LHC Run II / Ball, Richard D
We review the next generation global PDF sets: NNPDF3.0, MMHT14 and CT14. [...]
arXiv:1507.07891 ; CERN-PH-TH-2015-177 ; EDINBURGH 2015-15.
- 2015. - 15 p.
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2015-07-30
07:53
A perturbed lepton-specific two-Higgs-doublet model facing experimental hints for physics beyond the Standard Model / Crivellin, Andreas ; Heeck, Julian ; Stoffer, Peter
The BaBar, Belle, and LHCb collaborations have reported evidence for new physics in $B\to D\tau\nu$ and $B\to D^*\tau\nu$ of approximately $3.8\sigma$. [...]
arXiv:1507.07567 ; CERN-PH-TH-2015-168 ; ULB-15-13.
- 2015. - 14 p.
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2015-07-30
07:52
Lorentz violation in gravity / Blas, Diego
The study of gravitational theories without Lorentz invariance plays an important role to understand different aspects of gravitation. [...]
arXiv:1507.07687 ; CERN-PH-TH-2015-143.
- 2015. - 4 p.
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2015-07-28
11:24
Lepton Flavour Violating top decays at the LHC / Davidson, Sacha ; Mangano, Michelangelo L ; Perries, Stephane ; Sordini, Viola
We consider lepton flavour violating decays of the top quark, mediated by four-fermion operators. [...]
arXiv:1507.07163 ; CERN-PH-TH-2015-145.
- 2015. - 10 p.
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2015-07-28
11:21
Heavy Vector Partners of the Light Composite Higgs / Lane, Kenneth ; Prichett, Lukas
If the Higgs boson $H(125)$ is a composite due to new strong interactions at high energy, it has spin-one partners, $\rho_H$ and $a_H$, analogous to the $\rho$ and $a_1$ mesons of QCD. [...]
arXiv:1507.07102 ; CERN-PH-TH-2015-175 ; LAPTH-042-15.
- 2015. - 10 p.
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2015-07-27
07:26
Large scale structure from viscous dark matter / Blas, Diego (CERN) ; Floerchinger, Stefan (CERN) ; Garny, Mathias (CERN) ; Tetradis, Nikolaos (CERN ; Athens U.) ; Wiedemann, Urs Achim (CERN)
Cosmological perturbations of sufficiently long wavelength admit a fluid dynamic description. [...]
arXiv:1507.06665 ; CERN-PH-TH-2015-172.
- 2015. - 30 p.
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2015-07-24
14:53
Quark flavour observables in the Littlest Higgs model with T-parity after LHC Run 1 / Blanke, Monika (CERN ; Karlsruhe U., TTP ; Karlsruhe, Forschungszentrum) ; Buras, Andrzej J (TUM-IAS, Munich ; Munich, Tech. U.) ; Recksiegel, Stefan (Munich, Tech. U.)
The Littlest Higgs Model with T-parity (LHT) belongs to the simplest new physics scenarios with new sources of flavour and CP violation. [...]
arXiv:1507.06316 ; CERN-PH-TH-2015-158 ; TTP15-023 ; FLAVOUR(267104)-ERC-104.
- 2015. - 34 p.
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2015-07-23
08:24
Gluon PDF constraints from the ratio of forward heavy quark production at the LHC at $\sqrt{S}$ = 7 and 13 TeV / Cacciari, Matteo (Diderot U., Paris ; Paris, LPTHE ; UPMC, Paris (main) ; CERN) ; Mangano, Michelangelo L (CERN) ; Nason, Paolo (INFN, Milan Bicocca)
We discuss production of charm and bottom quarks at forward rapidity in pp collisions at the LHC, updating the QCD predictions for the run at $\sqrt{S}$ = 13 TeV. [...]
arXiv:1507.06197 ; CERN-PH-TH-2015-171.
- 2015. - 21 p.
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2015-07-23
08:24
Evanescent Effects Can Alter Ultraviolet Divergences in Quantum Gravity without Physical Consequences / Bern, Zvi (UCLA ; CERN) ; Cheung, Clifford (Caltech, Pasadena (main)) ; Chi, Huan-Hang (SLAC) ; Davies, Scott (UCLA) ; Dixon, Lance (Caltech, Pasadena (main) ; SLAC) ; Nohle, Josh (UCLA)
Evanescent operators such as the Gauss-Bonnet term have vanishing perturbative matrix elements in exactly D=4 dimensions. [...]
arXiv:1507.06118 ; SLAC-PUB-16332 ; CERN-PH-TH-2015-162 ; UCLA-15-TEP-101 ; CALT-2015-036.
- 2015. - 6 p.
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