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First Measurement of ν_{e} and ν_{μ} Interaction Cross Sections at the LHC with FASER's Emulsion Detector.
Phys Rev Lett
July 2024
Department of Physics, Tsinghua University, Beijing, China.
The first results of the study of high-energy electron neutrino (ν_{e}) and muon neutrino (ν_{μ}) charged-current interactions in the FASERν emulsion-tungsten detector of the FASER experiment at the LHC are presented. A 128.8 kg subset of the FASERν volume was analyzed after exposure to 9.
View Article and Find Full Text PDFMiniBooNE and MicroBooNE Combined Fit to a 3+1 Sterile Neutrino Scenario.
Phys Rev Lett
November 2022
University of Colorado, Boulder, Colorado 80309, USA.
This Letter presents the results from the MiniBooNE experiment within a full "3+1" scenario where one sterile neutrino is introduced to the three-active-neutrino picture. In addition to electron-neutrino appearance at short baselines, this scenario also allows for disappearance of the muon-neutrino and electron-neutrino fluxes in the Booster Neutrino Beam, which is shared by the MicroBooNE experiment. We present the 3+1 fit to the MiniBooNE electron-(anti)neutrino and muon-(anti)neutrino data alone and in combination with MicroBooNE electron-neutrino data.
View Article and Find Full Text PDFA commentary of "Breaking the matter-antimatter mirror symmetry"： 10 remarkable discoveries from 2020 in .
Fundam Res
March 2022
Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China.
The T2K collaboration reported that leptons appear to violate the "particle-antiparticle mirror symmetry", which is also known as charge-parity (CP) symmetry [1]. Leptonic CP violation can be detected with neutrinos. Neutrinos are classified into three "flavors" based on their corresponding charged leptons (electron, muon, and tau).
View Article and Find Full Text PDFCharacteristics of the Diffuse Astrophysical Electron and Tau Neutrino Flux with Six Years of IceCube High Energy Cascade Data.
Phys Rev Lett
September 2020
III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany.
We report on the first measurement of the astrophysical neutrino flux using particle showers (cascades) in IceCube data from 2010-2015. Assuming standard oscillations, the astrophysical neutrinos in this dedicated cascade sample are dominated (∼90%) by electron and tau flavors. The flux, observed in the sensitive energy range from 16 TeV to 2.
View Article and Find Full Text PDFGlobal Fit to Modified Neutrino Couplings and the Cabibbo-Angle Anomaly.
Phys Rev Lett
August 2020
Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland and Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
Recently, discrepancies of up to 4σ between the different determinations of the Cabibbo angle were observed. In this context, we point out that this "Cabibbo-angle anomaly" can be explained by lepton flavor universality violating new physics in the neutrino sector. However, modified neutrino couplings to standard model gauge bosons also affect many other observables sensitive to lepton flavor universality violation, which have to be taken into account in order to assess the viability of this explanation.
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