Physical Review Letters (APS)

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2019-03-15
18:16
Evidence of a Resonant Structure in the e+eπ+D0D* Cross Section between 4.05 and 4.60 GeV / Ablikim, M. ; Achasov, M. N. ; Ahmed, S. ; Albrecht, M. ; et al
The cross section of the process e+eπ+D0D* for center-of-mass energies from 4.05 to 4.60 GeV is measured precisely using data samples collected with the BESIII detector operating at the BEPCII storage ring. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.102002
2019-03-13
22:16
Primordial Black Holes from the QCD Axion / Ferrer, Francesc ; Masso, Eduard ; Panico, Giuliano ; Pujolas, Oriol ; et al
We propose a mechanism to generate primordial black holes (PBHs) that is independent of cosmological inflation and occurs slightly below the QCD phase transition. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.101301
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2019-03-13
18:16
Thermal Emission from Semiclassical Dynamical Systems / Morita, Takeshi
Recently the bound on the Lyapunov exponent λL2πT/ in thermal quantum systems was conjectured by Maldacena, Shenker, and Stanford. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.101603
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2019-03-11
22:16
Spinor-Helicity Formalism for Massless Fields in AdS4 / Nagaraj, Balakrishnan ; Ponomarev, Dmitry
In this Letter, we suggest a natural spinor-helicity formalism for massless fields in four-dimensional anti–de Sitter space (AdS4). [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.101602 arXiv:1811.08438
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2019-03-11
18:16
Polarized Scattering Equations for 6D Superamplitudes / Geyer, Yvonne ; Mason, Lionel
We introduce a spinorial version of the scattering equations, the polarized scattering equations, that incorporates spinor polarization data. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.101601 arXiv:1812.05548
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2019-03-01
16:46
First Measurement of a Long-Lived π+π Atom Lifetime / Adeva, B. ; Afanasyev, L. ; Anania, A. ; Aogaki, S. ; et al
The adapted DIRAC experiment at the CERN PS accelerator observed for the first time long-lived hydrogenlike π+π atoms, produced by protons hitting a beryllium target. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.082003 arXiv:1811.08659
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2019-03-01
16:44
Search for Narrow Hγ Resonances in Proton-Proton Collisions at s=13 TeV / Sirunyan, A. M. ; Tumasyan, A. ; Adam, W. ; Ambrogi, F. ; et al
A search for heavy, narrow resonances decaying to a Higgs boson and a photon (Hγ) has been performed in proton-proton collision data at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb1 collected with the CMS detector at the LHC in 2016. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.081804 arXiv:1808.01257
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2019-03-01
16:44
Gravitational Mass Carried by Sound Waves / Esposito, Angelo ; Krichevsky, Rafael ; Nicolis, Alberto
We show that the commonly accepted statement that sound waves do not transport mass is only true at linear order. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.084501 arXiv:1807.08771
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2019-02-28
02:19
Neutrino Masses from Planck-Scale Lepton Number Breaking / Ibarra, Alejandro ; Strobl, Patrick ; Toma, Takashi
We consider an extension of the standard model by right-handed neutrinos and we argue that, under plausible assumptions, a neutrino mass of O(0.1) eV is naturally generated by the breaking of the lepton number at the Planck scale, possibly by gravitational effects, without the necessity of introducing new mass scales in the model. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.081803 arXiv:1802.09997
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2019-02-28
02:19
Observation of the Decay D0Kπ+e+e / Lees, J. P. ; Poireau, V. ; Tisserand, V. ; Grauges, E. ; et al
We report the observation of the rare charm decay D0Kπ+e+e, based on 468 fb1 of e+e annihilation data collected at or close to the center-of-mass energy of the ϒ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.081802 arXiv:1808.09680
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