CERN Accelerating science

CERN Theory

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2015-01-23
08:09
Naturalness in the Dark at the LHC / Craig, Nathaniel ; Katz, Andrey ; Strassler, Matt ; Sundrum, Raman
We revisit the Twin Higgs scenario as a "dark" solution to the little hierarchy problem, identify the structure of a minimal model and its viable parameter space, and analyze its collider implications. [...]
arXiv:1501.05310 ; UMD-PP-014-028 ; CERN-PH-TH-2014-263.
- 2015. - 64 p.
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2015-01-23
08:08
Discrete Glimpses of the Physics Landscape after the Higgs Discovery / Ellis, John
What is the Higgs boson telling us? What else is there? How do we find it? This talk discusses these current topics in particle physics in the wake of the Higgs discovery, with particular emphasis on the discrete symmetries CP and R-parity, not forgetting flavour physics and dark matter, and finishing with some remarks about possible future colliders..
arXiv:1501.05418 ; KCL-PH-TH-2015-02 ; LCTS-2015-01 ; CERN-PH-TH-2015-008.
- 2015.
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2015-01-14
07:26
Neutrino versus antineutrino cross sections and CP violation / Ericson, M (Lyon, IPN ; CERN) ; Martini, M (Gent U.)
We discuss the nuclear interactions of neutrinos versus those of antineutrinos, a relevant comparison for CP violation experiments in the neutrino sector. [...]
arXiv:1501.02442 ; CERN-PH-TH-2014-253.
- 2015.
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2015-01-09
08:08
Wall-crossing made smooth / Pioline, Boris (CERN and LPTHE)
In $D=4,N=2$ theories on $R^{3,1}$, the index receives contributions not only from single-particle BPS states, counted by the BPS indices, but also from multi-particle states made of BPS constituents. [...]
arXiv:1501.01643 ; CERN-PH-TH-2015-002.
- 2015. - 14 p.
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2015-01-07
09:01
Explaining $h\to\mu^\pm\tau^\mp$, $B\to K^* \mu^+\mu^-$ and $B\to K \mu^+\mu^-/B\to K e^+e^-$ in a two-Higgs-doublet model with gauged $L_\mu-L_\tau$ / Crivellin, Andreas ; D'Ambrosio, Giancarlo ; Heeck, Julian
The LHC observed so far three deviations from the Standard Model (SM) predictions in flavour observables: LHCb reported anomalies in $B\to K^* \mu^+\mu^-$ and $R(K)=B\to K \mu^+\mu^-/B\to K e^+e^-$ while CMS found an excess in $h\to\mu\tau$. [...]
arXiv:1501.00993 ; CERN-PH-TH-2015-001 ; ULB-TH-14-26.
- 2015. - 6 p.
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2015-01-06
07:25
LHC constraints on gauge boson couplings to dark matter / Crivellin, Andreas (CERN) ; Haisch, Ulrich (CERN ; Oxford U., Theor. Phys.) ; Hibbs, Anthony (Oxford U., Theor. Phys.)
Collider searches for energetic particles recoiling against missing transverse energy allow to place strong bounds on the interactions between dark matter (DM) and standard model particles. [...]
arXiv:1501.00907 ; CERN-PH-TH-2014-252.
- 2015. - 10 p.
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2014-12-31
08:02
Correlation functions of the chiral stress-tensor multiplet in N=4 SYM / Chicherin, Dmitry (Annecy, LAPTH) ; Doobary, Reza (Durham U., Dept. of Math.) ; Eden, Burkard (Humboldt U., Berlin, Inst. Math.) ; Heslop, Paul (Durham U., Dept. of Math.) ; Korchemsky, Gregory P (IPhT, Saclay) ; Mason, Lionel (Oxford U., Inst. Math.) ; Sokatchev, Emery (Annecy, LAPTH ; CERN ; Inst. U. de France)
We give a new method for computing the correlation functions of the chiral part of the stress-tensor supermultiplet that relies on the reformulation of N=4 SYM in twistor space. [...]
arXiv:1412.8718 ; CERN-PH-TH-2014-270 ; DCPT-14-79 ; HU-EP-14-66 ; IPHT-T14-242 ; LAPTH-239-14.
- 2014. - 46 p.
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2014-12-31
08:01
Observable Effects of General New Scalar Particles / de Blas, Jorge (INFN, Rome) ; Chala, Mikael (DESY) ; Perez-Victoria, Manuel (CAFPE, Granada) ; Santiago, Jose (CAFPE, Granada ; CERN)
We classify all possible new scalar particles that can have renormalizable linear couplings to Standard Model fields and therefore be singly produced at colliders. [...]
arXiv:1412.8480 ; CERN-PH-TH-2014-264.
- 2014. - 20 p.
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2014-12-30
07:25
Automated NNLL+NLO Resummation for Jet-Veto Cross Sections / Becher, Thomas (Bern U.) ; Frederix, Rikkert (CERN) ; Neubert, Matthias (Mainz U., PRISMA ; Mainz U., Inst. Phys. ; Cornell U., LEPP) ; Rothen, Lorena (Bern U.)
In electroweak-boson production processes with a jet veto, higher-order corrections are enhanced by logarithms of the veto scale over the invariant mass of the boson system. [...]
arXiv:1412.8408 ; CERN-PH-TH-2014-268 ; MITP-14-099.
- 2014. - 26 p.
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2014-12-25
08:16
The ${\mathcal N}=2$ superconformal bootstrap / Beem, Christopher (Princeton, Inst. Advanced Study) ; Lemos, Madalena (YITP, Stony Brook) ; Liendo, Pedro (Humboldt U., Berlin (main)) ; Rastelli, Leonardo (YITP, Stony Brook) ; van Rees, Balt C (CERN)
In this work we initiate the conformal bootstrap program for ${\mathcal N}=2$ superconformal field theories in four dimensions. [...]
arXiv:1412.7541 ; YITP-SB-14-54 ; CERN-PH-TH-2014-269 ; HU-EP-14-61.
- 2014. - 92 p.
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