Physical Review Letters (APS)

Latest additions:
2019-01-18
18:18
Precise Determination of the Branching Ratio of the Neutral-Pion Dalitz Decay / Husek, Tomáš ; Goudzovski, Evgueni ; Kampf, Karol
We provide a new value for the ratio R=Γ(π0e+eγ(γ))/Γ(π0γγ)=11.978(6)×103, which is by 2 orders of magnitude more precise than the current Particle Data Group average. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.022003 arXiv:1809.01153
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2019-01-15
18:16
Light-Neutrino Exchange and Long-Distance Contributions to 0ν2β Decays: An Exploratory Study on ππee / Feng, Xu ; Jin, Lu-Chang ; Tuo, Xin-Yu ; Xia, Shi-Cheng
We present an exploratory lattice QCD calculation of the neutrinoless double beta decay ππee. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.022001 arXiv:1809.10511
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2019-01-15
18:16
Search for KLπ0νν¯ and KLπ0X0 Decays at the J-PARC KOTO Experiment / Ahn, J. K. ; Beckford, B. ; Beechert, J. ; Bryant, K. ; et al
A search for the rare decay KLπ0νν¯ was performed. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.021802 arXiv:1810.09655
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2019-01-14
22:16
Search for the Higgs Boson Decaying to Two Muons in Proton-Proton Collisions at s=13 TeV / Sirunyan, A. M. ; Tumasyan, A. ; Adam, W. ; Ambrogi, F. ; et al
A search for the Higgs boson decaying to two oppositely charged muons is presented using data recorded by the CMS experiment at the CERN LHC in 2016 at a center-of-mass energy s=13 TeV, corresponding to an integrated luminosity of 35.9 fb1. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.021801 arXiv:1807.06325
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2019-01-11
16:18
Importance of Loop Effects in Explaining the Accumulated Evidence for New Physics in B Decays with a Vector Leptoquark / Crivellin, Andreas ; Greub, Christoph ; Saturnino, Francesco ; Müller, Dario
In recent years experiments revealed intriguing hints for new physics (NP) in B decays involving bcτν and bs+ transitions at the 4σ and 5σ level, respectively. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.011805 arXiv:1807.02068
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2019-01-11
16:17
Observation of Two Resonances in the Λb0π± Systems and Precise Measurement of Σb± and Σb*± Properties / Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; et al
The first observation of two structures consistent with resonances in the final states Λb0π and Λb0π+ is reported using samples of pp collision data collected by the LHCb experiment at s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb1. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.012001 arXiv:1809.07752
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2019-01-11
16:17
Spectrum of Majorana Quantum Mechanics with O(4)3 Symmetry / Pakrouski, Kiryl ; Klebanov, Igor R. ; Popov, Fedor ; Tarnopolsky, Grigory
We study the quantum mechanics of three-index Majorana fermions ψabc governed by a quartic Hamiltonian with O(N)3 symmetry. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.011601 arXiv:1808.07455
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2019-01-11
16:17
Search for Dark Matter Particles Produced in Association with a Top Quark Pair at s=13 TeV / Sirunyan, A. M. ; Tumasyan, A. ; Adam, W. ; Ambrogi, F. ; et al
A search is performed for dark matter particles produced in association with a top quark pair in proton-proton collisions at s=13 TeV. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.011803 arXiv:1807.06522
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2019-01-11
16:17
Measurement of the Charm-Mixing Parameter yCP / Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; et al
A measurement of the charm-mixing parameter yCP using D0K+K, D0π+π, and D0Kπ+ decays is reported. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.011802 arXiv:1810.06874
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2019-01-11
16:17
Stability of de Sitter Spacetime against Infrared Quantum Scalar Field Fluctuations / Moreau, G. ; Serreau, J.
We study the backreaction of superhorizon fluctuations of a light quantum scalar field on a classical de Sitter geometry by means of the Wilsonian renormalization group. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.011302 arXiv:1808.00338
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