20190909 11:03 
[PUBDB201903263]
Preprint/Report
Fonseca, N. ; Von Harling, B. ; De Lima, L. ; et al
A warped relaxion
[arXiv:1712.07635; DESY17103]
We construct a UV completion of the relaxion in a warped extra dimension. We identify the relaxion with the zero mode of the fifth component of a bulk gauge field and show how hierarchically different decay constants for this field can be achieved by different localizations of anomalous terms in the warped space. [...]
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20190906 09:48 
[PUBDB201903256]
Preprint/Report
Chu, X. ; GarciaCely, C. ; Murayama, H.
A Practical and Consistent Parametrization of Dark Matter SelfInteractions
[DESY19137; arXiv:1908.06067]
Selfinteracting dark matter has been proposed to explain the apparent mass deficit in astrophysical smallscale halos, while observations from galaxy clusters suggest that the corresponding cross section depends on the velocity. Accounting for this is often believed to be highly modeldependent with studies mostly focusing on scenarios with light mediators. [...]
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20190905 13:19 
[PUBDB201903252]
Preprint/Report
Das, G. ; Moch, S.O. ; Vogt, A.
Soft corrections to inclusive DIS at four loops and beyond
[arXiv:1908.03071; DESY19104; LTH 1212]
We study the threshold corrections to the structure functions in deepinelastic scattering (DIS) at the fifth logarithmic (N$^4$LL) order of the softgluon exponentiation in massless perturbative QCD. Using recent results for the splitting functions and the quark form factor, we derive the fourthorder contribution to the coefficient $f^{\rm q}$ of the form factor and from it the N$^4$LL part of the exponentiation coefficient $B^{\rm DIS}$ in the limit of a large number of colours. [...]
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20190905 13:15 
[PUBDB201903251]
Report/Journal Article
Ballesteros, G. ; Redondo, J. ; Ringwald, A. ; et al
Several Problems in Particle Physics and Cosmology Solved in One SMASH
[arXiv:1904.05594; DESY19056; IFTUAM/CSIC1939; MPP201975; TUMHEP119619]
The Standard Model (SM) of particle physics is a big success. However, it lacks explanations for cosmic inflation, the matterantimatter asymmetry of the Universe, dark matter, neutrino oscillations, and the feebleness of CP violation in the strong interactions. [...]
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ddc:620
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20190905 13:13 
[PUBDB201903249]
Journal Article
Horsley, R. ; Koumi, Z. ; Nakamura, Y. ; et al
Isospin splittings in the decuplet baryon spectrum from dynamical QCD+QED
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20190905 13:08 
[PUBDB201903248]
Report/Journal Article
AriasTamargo, G. ; Bourget, A. ; Pini, A. ; et al
Discrete gauge theories of charge conjugation
[DESY19045; arXiv:1903.06662]
We define gauge theories whose gauge group includes charge conjugation as well as standard $\mathrm{SU}(N)$ transformations. When combined, these transformations form a novel type of group with a semidirect product structure. [...]
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20190905 13:05 
[PUBDB201903247]
Report/Journal Article
Ciuchini, M. ; Coutinho, A. M. ; Fedele, M. ; et al
New Physics in $b \to s \ell^+ \ell^$ confronts new data on Lepton Universality
[arXiv:1903.09632; DESY19043; CERNTH2019033; UCITR201907]
In light of the very recent updates on the $R_K$ and $R_{K^*}$ measurements from the LHCb and Belle collaborations, we systematically explore here imprints of New Physics in $b \to s \ell^+ \ell^ $ transitions using the language of effective field theories. We focus on effects that violate Lepton Flavour Universality both in the Weak Effective Theory and in the Standard Model Effective Field Theory. [...]
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20190905 13:03 
[PUBDB201903246]
Report/Journal Article
CaronHuot, S. ; Dixon, L. J. ; Dulat, F. ; et al
SixGluon Amplitudes in Planar ${\cal N}=4$ SuperYangMills Theory at Six and Seven Loops
[arXiv:1903.10890; DESY19042; HUEP19/04; SLACPUB17413]
We compute the sixparticle maximallyhelicityviolating (MHV) and nexttoMHV (NMHV) amplitudes in planar maximally supersymmetric YangMills theory through seven loops and six loops, respectively, as an application of the extended Steinmann relations and using the cosmic Galois coaction principle. Starting from a minimal space of functions constructed using these principles, we identify the amplitude by matching its symmetries and predicted behavior in various kinematic limits. [...]
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20190905 12:36 
[PUBDB201903245]
Report/Journal Article
Diehl, M. ; Gaunt, J. ; PlĂ¶ssl, P. ; et al
Twoloop splitting in double parton distributions
[arXiv:1902.08019; DESY19024; CERNTH2019013]
Double parton distributions (DPDs) receive a shortdistance contribution from a single parton splitting to yield the two observed partons. We investigate this mechanism at nexttoleading order (NLO) in perturbation theory. [...]
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20190905 12:30 
[PUBDB201903244]
Journal Article/Report/Contribution to a conference proceedings
Reuter, J.
The Role of Positron Polarization for the initial 250 GeV stage of the ILC
[DESY18193; arXiv:1811.05263]
The International Linear Collider is now proposed with a staged machine design, with the first stage at $\sqrt{s}=250$ GeV and an integrated luminosity goal of 2 ab${}^{1}$. One of the questions for the machine design is the importance of positron polarization. [...]
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