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2021-06-21
11:27
OpenAccess [PUBDB-2021-02690] Journal Article
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Crystallographic fragment screening-based study of a novel FAD-dependent oxidoreductase from Chaetomium thermophilum
The FAD-dependent oxidoreductase from Chaetomium thermophilum (CtFDO) is a novel thermostable glycoprotein from the glucose–methanol–choline (GMC) oxidoreductase superfamily. However, CtFDO shows no activity toward the typical substrates of the family and high-throughput screening with around 1000 compounds did not yield any strongly reacting substrate. [...]
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2021-06-21
11:18
OpenAccess [PUBDB-2021-02689] Journal Article
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A simple vapor-diffusion method enables protein crystallization inside the HARE serial crystallography chip
Fixed-target serial crystallography has become an important method for the study of protein structure and dynamics at synchrotrons and X-ray free-electron lasers. However, sample homogeneity, consumption and the physical stress on samples remain major challenges for these high-throughput experiments, which depend on high-quality protein microcrystals. [...]
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2021-06-14
13:28
OpenAccess [PUBDB-2021-02629] Preprint
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A 96 GeV Higgs Boson in the 2HDMS: $e^+e^-$ collider prospects
[DESY-21-077; IFT-UAM/CSIC-21-061; arXiv:2105.11189]
The CMS collaboration reported a $\sim 3 \, \sigma$ (local) excess at $96\;$GeV in the search for light Higgs-boson decaying into two photons. This mass coincides with a $\sim 2 \, \sigma$ (local) excess in the $b\bar b$ final state at LEP. [...]
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2021-06-14
12:13
OpenAccess [PUBDB-2021-02628] Journal Article
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Spin Effects in the Effective Field Theory Approach to Post-Minkowskian Conservative Dynamics
[DESY-21-020; arXiv:2102.10059]
Building upon the worldline effective field theory (EFT) formalism for spinning bodies developed for the Post-Newtonian regime, we generalize the EFT approach to Post-Minkowskian (PM) dynamics to include rotational degrees of freedom in a manifestly covariant framework. We introduce a systematic procedure to compute the total change in momentum and spin in the gravitational scattering of compact objects. [...]
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2021-06-14
11:30
arXiv [PUBDB-2021-02627] Journal Article
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A tidal disruption event coincident with a high-energy neutrino
[arXiv:2005.05340]
Nature astronomy 5(5), 510 - 518 () [10.1038/s41550-020-01295-8]  GO
The tidal disruption event AT2019dsg is probably associated with a high-energy neutrino, suggesting that such events can contribute to the cosmic neutrino flux. The electromagnetic emission is explained in terms of a central engine, a photosphere and an extended synchrotron-emitting outflow..
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2021-06-14
11:23
arXiv [PUBDB-2021-02626] Journal Article
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The Twins Embedding of Type Ia Supernovae II: Improving Cosmological Distance Estimates
[arXiv:2105.02204]
We show how spectra of Type Ia supernovae (SNe Ia) at maximum light can be used to improve cosmological distance estimates. In a companion article, we used manifold learning to build a three-dimensional parameterization of the intrinsic diversity of SNe Ia at maximum light that we call the “Twins Embedding.” In this article, we discuss how the Twins Embedding can be used to improve the standardization of SNe Ia. [...]
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2021-06-14
11:18
OpenAccess [PUBDB-2021-02625] Journal Article
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Search for dark matter annihilation in the Wolf-Lundmark-Melotte dwarf irregular galaxy with H.E.S.S.
[arXiv:2105.04325]
We search for an indirect signal of dark matter through very high-energy γ rays from the Wolf-Lundmark-Melotte (WLM) dwarf irregular galaxy. The pair annihilation of dark matter particles would produce Standard Model particles in the final state such as γ rays, which might be detected by ground-based Cherenkov telescopes. [...]
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2021-06-14
11:06
OpenAccess [PUBDB-2021-02624] Preprint
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Double parton distributions in the nucleon from lattice QCD
[DESY-21-066; arXiv:2106.03451]
We evaluate nucleon four-point functions in the framework of lattice QCD in order to extract the first Mellin moment of double parton distributions (DPDs) in the unpolarized proton. In this first study, we employ an n$_f$ = 2 + 1 ensemble with pseudoscalar masses of m$\pi$ = 355 MeV and m$_K$ = 441 MeV. [...]
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2021-06-14
11:01
OpenAccess [PUBDB-2021-02622] Journal Article
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Measurement-Based Variational Quantum Eigensolver
[arXiv:2010.13940]
Variational quantum eigensolvers (VQEs) combine classical optimization with efficient cost function evaluations on quantum computers. We propose a new approach to VQEs using the principles of measurement-based quantum computation. [...]
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2021-06-14
10:55
OpenAccess [PUBDB-2021-02621] Journal Article
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The Twins Embedding of Type Ia Supernovae I: The Diversity of Spectra at Maximum Light
[arXiv:2105.02676]
We study the spectral diversity of Type Ia supernovae (SNe Ia) at maximum light using high signal-to-noise spectrophotometry of 173 SNe Ia from the Nearby Supernova Factory. We decompose the diversity of these spectra into different extrinsic and intrinsic components, and we construct a nonlinear parameterization of the intrinsic diversity of SNe Ia that preserves pairings of “twin” SNe Ia. [...]
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