Measurement of the beam-helicity asymmetry in photoproduction of π0η pairs on carbon, aluminum, and leadThe beam-helicity asymmetry was measured, for the first time, in photoproduction of π0η pairs on carbon, aluminum, and lead, with the A2 experimental setup at MAMI. The results are compared to…V. Sokhoyan, S. Prakhov, A. Fix et al.·Jun 29, 2019SaveLearn
Direct observation of proton emission in 11BeThe elusive β-p+ decay was observed in 11Be by directly measuring the emitted protons and their energy distribution for the first time with the prototype Active Target Time Projection…Y. Ayyad, B. Olaizola, W. Mittig et al.·Jun 28, 2019SaveLearn
Gamma Ray Spectra from Thermal Neutron Capture on Gadolinium-155 and Natural GadoliniumNatural gadolinium is widely used for its excellent thermal neutron capture cross section, because of its two major isotopes: 155Gd and 157Gd. We measured the γ-ray spectra…Tomoyuki Tanaka, Kaito Hagiwara, Enrico Gazzola et al.·Jun 28, 2019SaveLearn
Experimental searches for the chiral magnetic effect in heavy-ion collisionsThe chiral magnetic effect (CME) in quantum chromodynamics (QCD) refers to a charge separation (an electric current) of chirality imbalanced quarks generated along an external strong magnetic field.…Jie Zhao, Fuqiang Wang·Jun 27, 2019SaveLearn
Particle decays of levels in 11,12N and 12O investigated with the invariant-mass methodParticle-decaying states of the light nuclei 11,12N and 12O were studied using the invariant-mass method. The decay energies and intrinsic widths of a number of states were measured, and…T. B. Webb, R. J. Charity, J. M. Elson et al.·Jun 26, 2019SaveLearn
First search for 2 and β+ processes in 168YbThe double-electron capture and the electron capture with positron emission in 168Yb have been investigated for the first time at the STELLA facility of the Gran Sasso underground laboratory…P. Belli, R. Bernabei, R. S. Boiko et al.·Jun 26, 2019SaveLearn
Statistically significant observation of and cross sections for a new nuclear reaction channel on 197Au with bound dineutron escapeA new nuclear reaction channel on 197Au with the neutron as a projectile and a bound dineutron (2n) in the output channel is considered based on available experimental observations. The dineutron is…I. M. Kadenko, B. Biro, A. Fenyvesi·Jun 25, 2019SaveLearn
The 02β-decay CROSS experiment: preliminary results and prospectsNeutrinoless double-beta decay is a key process in particle physics. Its experimental investigation is the only viable method that can establish the Majorana nature of neutrinos, providing at the…I. C. Bandac, A. S. Barabash, L. Bergé et al.·Jun 24, 2019SaveLearn
Status of the KATRIN neutrino mass experimentThe KArlsruhe TRItium Neutrino (KATRIN) experiment is designed to measure tritium β-decay spectrum with enough precision to be sensitive to neutrino mass down to 0.2eV at 90\% Confidence Level.…Yung-Ruey Yen·Jun 24, 2019SaveLearn
Measurement of γ rays from the giant resonances excited by 12C(p,p') reaction at 392 MeV and 0^We measured both the differential cross section (σp,p =d2σ/dΩdEx) and the γ-ray emission probability (Rγ(Ex) =σp,pγ/σp,p) from the giant resonances…M. S. Reen, I. Ou, T. Sudo et al.·Jun 23, 2019SaveLearn
Measurement of away-side broadening with self-subtraction of flow in Au+Au collisions at s_NN=200 GeVHigh transverse momentum (pT) particle production is suppressed due to parton (jet) energy loss in the hot dense medium created in relativistic heavy-ion collisions. Redistribution of energy at…STAR Collaboration·Jun 22, 2019SaveLearn
Physics with Positron Beams at Jefferson Lab 12 GeVPositron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental program at the next generation of lepton accelerators. In the context of the Hadronic…A. Afanasev, I. Albayrak, S. Ali et al.·Jun 22, 2019SaveLearn
Beam-energy dependence of identified two-particle angular correlations in Au+Au collisions at RHICThe two-particle angular correlation functions, R2, of pions, kaons, and protons in Au+Au collisions at sNN= 7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV were measured by the STAR…STAR Collaboration, J. Adam, L. Adamczyk et al.·Jun 21, 2019SaveLearn
Charm and beauty isolation from heavy flavor decay electrons in Au+Au collisions at s NN = 200 GeV at RHICWe present a study of charm and beauty isolation based on a data-driven method with recent measurements on heavy flavor hadrons and their decay electrons in Au+Au collisions at s NN =…Fan Si, Xiao-Long Chen, Long Zhou et al.·Jun 21, 2019SaveLearn
Emerging collectivity from the nuclear structure of 132Xe: Inelastic neutron scattering studies and shell-model calculationsInelastic neutron scattering was used to study the low-lying nuclear structure of 132Xe. A comprehensive level scheme is presented, as well as new level lifetimes, multipole mixing ratios,…E. E. Peters, A. E. Stuchbery, A. Chakraborty et al.·Jun 20, 2019SaveLearn
Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at s=8 and 13 TeVResults are presented from the measurement by ATLAS of long-range (|Δη|>2)dihadron angular correlations in s=8 and 13 TeV pp collisions containing a Z boson. The analysis is performed…ATLAS Collaboration·Jun 19, 2019SaveLearn
Measurement of the total neutron scattering cross section ratios of noble gases of natural isotopic composition using a pulsed neutron beamPrecision measurements of slow neutron cross sections with atoms have several scientific applications. In particular the n-4He s-wave scattering length is important to know both for helping to…Christopher C. Haddock, Masayuki Hiromoto, Katsuya Hirota et al.·Jun 19, 2019SaveLearn
Observation of the 7H excited stateThe 7H system was populated in the 2H(8He,3He)7H reaction with a 26 AMeV 8He beam. The 7H missing mass energy spectrum, the 3H energy and angular distributions in the…A. A. Bezbakh, V. Chudoba, S. A. Krupko et al.·Jun 18, 2019SaveLearn
Search for triple and quadruple beta decay of 150NdTriple beta decay of 150Nd to the ground and excited states of 150Eu and quadruple beta decay of 150Nd to the excited states of 150Gd have been studied using a 400 cm3…A. S. Barabash, Ph. Hubert, A. Nachab et al.·Jun 17, 2019SaveLearn
Investigation of the quasi-free domain in deuteron-deuteron break-up using spin observablesPrecision measurements of vector and tensor analyzing powers of the 2 H( d,dp)n break-up process for configurations in the vicinity of the quasi-free scattering regime with the…R. Ramazani-Sharifabadi, M. T. Bayat, I. Ciepał et al.·Jun 15, 2019SaveLearn
γ-ray Strength Function for Barium IsotopesPhotoneutron cross sections were measured for 137Ba and 138Ba at energies below two-neutron threshold using quasi-monochromatic γ-ray beams produced in laser Compton-scattering at the…H. Utsunomiya, T. Renstrøm, G. M. Tveten et al.·Jun 14, 2019SaveLearn
Calculation of resonance energies from Q-valuesResonance energies are frequently derived from precisely measured excitation energies and reaction Q-values. The latter quantities are usually calculated from atomic instead of nuclear mass…Christian Iliadis·Jun 14, 2019SaveLearn
Constraining the Neutron Star Compactness: Extraction of the 23Al(p,γ) Reaction Rate for the rp-ProcessThe 23Al(p,γ)24Si reaction is among the most important reactions driving the energy generation in Type-I X-ray bursts. However, the present reaction-rate uncertainty limits constraints on…C. Wolf, C. Langer, F. Montes et al.·Jun 14, 2019SaveLearn
Levy HBT results at NA61/SHINEBose-Einstein (or HBT) momentum correlations reveal the space-time structure of the particle emitting source created in high energy nucleus-nucleus collisions. In this paper we present the latest…Barnabas Porfy·Jun 14, 2019SaveLearn
Experimental Constraint on Stellar Electron-Capture Rates from the 88Sr(t,3He+γ)88Rb reaction at 115 MeV/uThe Gamow-Teller strength distribution from 88Sr was extracted from a (t,3He+γ) experiment at 115 MeV/u to constrain estimates for the electron-capture rates on nuclei around…J. C. Zamora, R. G. T. Zegers, Sam M. Austin et al.·Jun 13, 2019SaveLearn