Composite solution to the neutron lifetime anomaly

The Puzzle of Neutron Lifetime

In this paper we review the role of the neutron lifetime and discuss the present status of measurements. In view of the large discrepancy observed by the two most precise individual measurements so far we describe the different techniques and point out principle strengths and weaknesses. In particular we discuss the estimation of systematic uncertainties and its correlation to the statistical o...

Determination of the Free Neutron Lifetime

J. David Bowman, L. J. Broussard, S. M. Clayton, M. S. Dewey, N. Fomin, K. B. Grammer, G. L. Greene, 1, † P. R. Huffman, A. T. Holley, G. L. Jones, C.-Y. Liu, M. Makela, M. P. Mendenhall, C. L. Morris, J. Mulholland, K. M. Nollett, 10 R. W. Pattie, Jr., S. Penttilä, M. Ramsey-Musolf, D. J. Salvat, 2 A. Saunders, S. J. Seestrom, W. M. Snow, A. Steyerl, F. E. Wietfeldt, A. R. Young, and A. T. Yue...

Neutron radioactivity—Lifetime measurements of neutron-unbound states

A new technique to measure the lifetime � of a neutron-radioactive nucleus that decays in-flight via neutron emission is presented and demonstrated utilizing MonteCarlo simulations. The method is based on the production of the neutron-unbound nucleus in a target, which at the same time slows down the produced nucleus and the residual nucleus after (multi-) neutron emission. The spectrum of the ...

Gravitational solution to the Pioneer 10/11 anomaly

A fully relativistic modified gravitational theory including a fifth force skew symmetric field is fitted to the Pioneer 10/11 anomalous acceleration. The theory allows for a variation with distance scales of the gravitational constant G, the fifth force skew symmetric field coupling strength ω and the mass of the skew symmetric field μ = 1/λ. A fit to the available anomalous acceleration data ...

Neutron lifetime measured with stored ultracold neutrons.