Preprints

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2017-06-23
12:47
arXiv [PUBDB-2017-05985] Preprint
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Towards the exact Bremsstrahlung function of ABJM theory
We present the three-loop calculation of the Bremsstrahlung function associated to the 1/2-BPS cusp in ABJM theory, including color subleading corrections. Using the BPS condition we reduce the computation to that of a cusp with vanishing angle. [...]

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2017-06-23
12:38
arXiv [PUBDB-2017-05982] Preprint/Report
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High-scale Supersymmetry, the Higgs Mass and Gauge Unification
[MCTP-17-06; arXiv:1706.00013]
Suppressing naturalness concerns, we discuss the compatibility requirements of high-scale supersymmetry breaking with the Higgs boson mass constraint and gauge coupling unification. We find that to accommodate superpartner masses significantly greater than the electroweak scale, one must introduce large non-degeneracy factors. [...]

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2017-06-22
16:48
arXiv [PUBDB-2017-05897] Preprint/Report
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Search for $CP$ violation and measurement of the branching fraction in $D^{0} \to K^0_S K^0_S$ decay
[arXiv:1705.05966; Belle-Preprint-2017-03; KEK-Preprint-2016-64]
We report a study of the decay $D^0 \to K^0_S K^0_S$ using 921~fb$^{-1}$ of data collected at or near the $\Upsilon(4S)$ and $\Upsilon(5S)$ resonances with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. The measured time-integrated CP asymmetry is $ A_{CP}(D^0 \to K^0_S K^0_S) = (-0.02 \pm 1.53 \pm 0.02 \pm 0.17) \%$ and the branching fraction is $\mathcal{B} (D^{0}\rightarrow K_{S}^{0}K_{S}^{0})$ = (1.32 $\pm$ 0.02 $\pm$ 0.04 $\pm$ 0.04) $\times$ 10$^{-4}$, where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode ($D^0 \to K_S^0 \pi^0$) used in the analysis. [...]
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2017-06-21
09:36
arXiv [PUBDB-2017-05678] Preprint/Report
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Effective description of dark matter self-interactions in small dark matter haloes
[DESY-17-089; arXiv:1706.04794]
Self-interacting dark matter may have striking astrophysical signatures, such as observable offsets between galaxies and dark matter in merging galaxy clusters. Numerical N-body simulations used to predict such observables typically treat the galaxies as collisionless test particles, a questionable assumption given that each galaxy is embedded in its own dark matter halo. [...]

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2017-06-21
09:28
arXiv [PUBDB-2017-05674] Preprint/Report
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On-Shell neutral Higgs bosons in the NMSSM with complex parameters
[DESY-17-067; IFT-UAM-CSIC-17-042; arXiv:1706.00437]
The Next-to-Minimal Supersymmetric Standard model (NMSSM) appears as an interesting candidate for the interpretation of the Higgs-measurement at the LHC and as a rich framework embedding physics beyond the Standard Model. We consider the renormalization of the Higgs sector of this model in its $\mathcal{CP}$-violating version, and propose a renormalization scheme for the calculation of on-shell Higgs masses. [...]

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2017-06-21
09:25
arXiv [PUBDB-2017-05673] Preprint/Report
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Exotics: Heavy Pentaquarks and Tetraquarks
[DESY-17-071; arXiv:1706.00610]
For many decades after the invention of the quark model in 1964 there was no evidence that hadrons are formed from anything other than the simplest pairings of quarks and antiquarks, mesons being formed of a quark-antiquark pair and baryons from three quarks. In the last decade, however, in an explosion of data from both $e^+e^-$ and hadron colliders, there are many recently observed states that do not fit into this picture. [...]

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2017-06-13
16:14
OpenAccess [PUBDB-2017-04838] Preprint/Report
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Refined Holonomic Summation Algorithms in Particle Physics
[DESY-17-087; DO-TH-17-09; arXiv:1706.03677]
 GO
An improved multi-summation approach is introduced and discussed that enables one to simultaneously handle indefinite nested sums and products in the setting of difference rings and holonomic sequences. Relevant mathematics is reviewed and the underlying advanced difference ring machinery is elaborated upon. [...]
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2017-06-08
12:47
OpenAccess [PUBDB-2017-04528] Preprint/Report
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Search for supersymmetry in pp collisions at $\sqrt{s} = 13$ TeV in the single-lepton final state using the sum of masses of large-radius jets
[CMS-SUS-16-037; CERN-EP-2017-088; arXiv:1705.04673]
 GO
Results are reported from a search for supersymmetric particles in proton-proton collisions in the final state with a single lepton; multiple jets, including at least one b-tagged jet; and large missing transverse momentum. The search uses a sample of proton-proton collision data at $\sqrt{s} = 13$ TeV recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9 $^{-1}$. [...]
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2017-06-08
12:12
OpenAccess [PUBDB-2017-04527] Preprint/Report
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Measurement of B$^{\pm}$ meson differential production cross sections in pp and PbPb collisions at $\sqrt{{s}_{NN}} =$ 5.02 TeV
[CMS-HIN-16-011; CERN-EP-2017-076; arXiv:1705.04727]
 GO
The differential production cross sections of B$^{\pm}$ mesons are measured via the exclusive decay channels B$^{\pm} \to J/\psi K^{\pm} \to \mu^{+}\mu^{-} K^{\pm}$ as a function of transverse momentum in pp and PbPb collisions at a center-of-mass energy $\sqrt{{s}_{NN}} =$ 5.02 TeV per nucleon pair with the CMS detector at the LHC. The pp (PbPb) dataset used for this analysis corresponds to an integrated luminosity of 28.0$^{-1}$ (351$\mu b^{-1}$). [...]
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2017-06-08
12:07
OpenAccess [PUBDB-2017-04526] Preprint/Report
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Combination of searches for heavy resonances decaying to WW, WZ, ZZ, WH, and ZH boson pairs in proton-proton collisions at $\sqrt{s} =$ 8 and 13 TeV
[CMS-B2G-16-007; CERN-EP-2017-077; arXiv:1705.09171]
 GO
A statistical combination of searches is presented for massive resonances decaying to WW, WZ, ZZ, WH, and ZH boson pairs in proton-proton collision data collected by the CMS experiment at the LHC. The data are taken at centre-of-mass energies of 8 and 13 TeV, corresponding to respective integrated luminosities of 19.7 and up to 2.7$^{-1}$. [...]
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