Zobrazeno 1 - 10
of 67
pro vyhledávání: '"VornDick, B."'
Autor:
Sun, Xuan, Adamek, E., Allgeier, B., Bagdasarova, Y., Berguno, D. B., Blatnik, M., Bowles, T. J., Broussard, L. J., Brown, M. A. -P., Carr, R., Clayton, S., Cude-Woods, C., Currie, S., Dees, E. B., Ding, X., Filippone, B. W., García, A., Geltenbort, P., Hasan, S., Hickerson, K. P., Hoagland, J., Hong, R., Holley, A. T., Ito, T. M., Knecht, A., Liu, C. -Y., Liu, J., Makela, M., Mammei, R., Martin, J. W., Melconian, D., Mendenhall, M. P., Moore, S. D., Morris, C. L., Nepal, S., Nouri, N., Pattie Jr., R. W., Galván, A. Pérez, Phillips II, D. G., Picker, R., Pitt, M. L., Plaster, B., Salvat, D. J., Saunders, A., Sharapov, E. I., Sjue, S., Slutsky, S., Sondheim, W., Swank, C., Tatar, E., Vogelaar, R. B., VornDick, B., Wang, Z., Wei, W., Wexler, J. W., Womack, T., Wrede, C., Young, A. R., Zeck, B. A.
Publikováno v:
Phys. Rev. C 101, 035503 (2020)
The Ultracold Neutron Asymmetry (UCNA) experiment was designed to measure the $\beta$-decay asymmetry parameter, $A_0$, for free neutron decay. In the experiment, polarized ultracold neutrons are transported into a decay trap, and their $\beta$-decay
Externí odkaz:
http://arxiv.org/abs/1911.05829
Autor:
Plaster, B., Adamek, E., Allgeier, B., Anaya, J., Back, H. O., Bagdasarova, Y., Berguno, D. B., Blatnik, M., Boissevain, J. G., Bowles, T. J., Broussard, L. J., Brown, M. A. -P., Carr, R., Clark, D. J., Clayton, S., Cude-Woods, C., Currie, S., Dees, E. B., Ding, X., Du, S., Filippone, B. W., Garcia, A., Geltenbort, P., Hasan, S., Hawari, A., Hickerson, K. P., Hill, R., Hino, M., Hoagland, J., Hoedl, S. A., Hogan, G. E., Hona, B., Hong, R., Holley, A. T., Ito, T. M., Kawai, T., Kirch, K., Kitagaki, S., Knecht, A., Lamoreaux, S. K., Liu, C. -Y., Liu, J., Makela, M., Mammei, R. R., Martin, J. W., Meier, N., Melconian, D., Mendenhall, M. P., Moore, S. D., Morris, C. L., Mortensen, R., Nepal, S., Nouri, N., Pattie, R. W., Galvan, A. Perez, Phillips, D. G., Pichlmaier, A., Picker, R., Pitt, M. L., Ramsey, J. C., Rios, R., Russell, R., Sabourov, K., Sallaska, A. L., Salvat, D. J., Saunders, A., Schmid, R., Seestrom, S. J., Servicky, C., Sharapov, E. I., Sjue, S. K. L., Slutsky, S., Smith, D., Sondheim, W. E., Sun, X., Swank, C., Swift, G., Tatar, E., Teasdale, W., Terai, C., Tipton, B., Utsuro, M., Vogelaar, R. B., VornDick, B., Wang, Z., Wehring, B., Wexler, J., Womack, T., Wrede, C., Xu, Y. P., Yan, H., Young, A. R., Yuan, J., Zeck, B. A.
The UCNA experiment was designed to measure the neutron $\beta$-asymmetry parameter $A_0$ using polarized ultracold neutrons (UCN). UCN produced via downscattering in solid deuterium were polarized via transport through a 7 T magnetic field, and then
Externí odkaz:
http://arxiv.org/abs/1904.05432
Autor:
Sun, X., Adamek, E., Allgeier, B., Blatnik, M., Bowles, T. J., Broussard, L. J., Brown, M. A. -P., Carr, R., Clayton, S., Cude-Woods, C., Currie, S., Dees, E. B., Ding, X., Filippone, B. W., García, A., Geltenbort, P., Hasan, S., Hickerson, K. P., Hoagland, J., Hong, R., Hogan, G. E., Holley, A. T., Ito, T. M., Knecht, A., Liu, C. -Y., Liu, J., Makela, M., Mammei, R., Martin, J. W., Melconian, D., Mendenhall, M. P., Moore, S. D., Morris, C. L., Nepal, S., Nouri, N., Pattie, Jr., R. W., Galván, A. Pérez, Phillips II, D. G., Picker, R., Pitt, M. L., Plaster, B., Ramsey, J. C., Rios, R., Salvat, D. J., Saunders, A., Sondheim, W., Sjue, S., Slutsky, S., Swank, C., Swift, G., Tatar, E., Vogelaar, R. B., VornDick, B., Wang, Z., Wei, W., Wexler, J., Womack, T., Wrede, C., Young, A. R., Zeck, B. A.
Publikováno v:
Phys. Rev. C 97, 052501 (2018)
It has been proposed recently that a previously unobserved neutron decay branch to a dark matter particle ($\chi$) could account for the discrepancy in the neutron lifetime observed in experiments that use two different measurement techniques. One of
Externí odkaz:
http://arxiv.org/abs/1803.10890
Autor:
Brown, M. A. -P., Dees, E. B., Adamek, E., Allgeier, B., Blatnik, M., Bowles, T. J., Broussard, L. J., Carr, R., Clayton, S., Cude-Woods, C., Currie, S., Ding, X., Filippone, B. W., Garcia, A., Geltenbort, P., Hasan, S., Hickerson, K. P., Hoagland, J., Hong, R., Hogan, G. E., Holley, A. T., Ito, T. M., Knecht, A., Liu, C. -Y., Liu, J., Makela, M., Martin, J. W., Melconian, D., Mendenhall, M. P., Moore, S. D., Morris, C. L., Nepal, S., Nouri, N., Pattie, Jr., R. W., Perez-Galvan, A., Phillips II, D. G., Picker, R., Pitt, M. L., Plaster, B., Ramsey, J. C., Rios, R., Salvat, D. J., Saunders, A., Sondheim, W., Seestrom, S. J., Sjue, S., Slutsky, S., Sun, X., Swank, C., Swift, G., Tatar, E., Vogelaar, R. B., VornDick, B., Wang, Z., Wexler, J., Womack, T., Wrede, C., Young, A. R., Zeck, B. A.
Publikováno v:
Phys. Rev. C 97, 035505 (2018)
The neutron $\beta$-decay asymmetry parameter $A_0$ defines the correlation between the spin of the neutron and the momentum of the emitted electron, which determines $\lambda=\frac{g_{A}}{g_{V}}$, the ratio of the axial-vector to vector weak couplin
Externí odkaz:
http://arxiv.org/abs/1712.00884
Autor:
Hickerson, K. P., Sun, X., Bagdasarova, Y., Bravo-Berguño, D., Broussard, L. J., Brown, M. A. -P., Carr, R., Currie, S., Ding, X., Filippone, B. W., García, A., Geltenbort, P., Hoagland, J., Holley, A. T., Hong, R., Ito, T. M., Knecht, A., Liu, C. -Y., Liu, J. L., Makela, M., Mammei, R. R., Martin, J. W., Melconian, D., Mendenhall, M. P., Moore, S. D., Morris, C. L., Pattie, Jr., R. W., Galván, A. Pérez, Picker, R., Pitt, M. L., Plaster, B., Ramsey, J. C., Rios, R., Saunders, A., Seestrom, S. J., Sharapov, E. I., Sondheim, W. E., Tatar, E., Vogelaar, R. B., VornDick, B., Wrede, C., Young, A. R., Zeck, B. A.
Publikováno v:
Phys. Rev. C 96, 042501 (2017)
Precision measurements of free neutron $\beta$-decay have been used to precisely constrain our understanding of the weak interaction. However the neutron Fierz interference term $b_n$, which is particularly sensitive to Beyond-Standard-Model tensor c
Externí odkaz:
http://arxiv.org/abs/1707.00776
Autor:
Broussard, L. J., Zeck, B. A., Adamek, E. R., Baeßler, S., Birge, N., Blatnik, M., Bowman, J. D., Brandt, A. E., Brown, M., Burkhart, J., Callahan, N. B., Clayton, S. M., Crawford, C., Cude-Woods, C., Currie, S., Dees, E. B., Ding, X., Fomin, N., Frlez, E., Fry, J., Gray, F. E., Hasan, S., Hickerson, K. P., Hoagland, J., Holley, A. T., Ito, T. M., Klein, A., Li, H., Liu, C. -Y., Makela, M. F., McGaughey, P. L., Mirabal-Martinez, J., Morris, C. L., Ortiz, J. D., Pattie Jr., R. W., Penttilä, S. I., Plaster, B., Počanić, D., Ramsey, J. C., Salas-Bacci, A., Salvat, D. J., Saunders, A., Seestrom, S. J., Sjue, S. K. L., Sprow, A. P., Tang, Z., Vogelaar, R. B., Vorndick, B., Wang, Z., Wei, W., Wexler, J., Wilburn, W. S., Womack, T. L., Young, A. R.
We describe a detection system designed for precise measurements of angular correlations in neutron $\beta$ decay. The system is based on thick, large area, highly segmented silicon detectors developed in collaboration with Micron Semiconductor, Ltd.
Externí odkaz:
http://arxiv.org/abs/1607.02656
Autor:
Salvat, D. J., Adamek, E. R., Barlow, D., Broussard, L. J., Bowman, J. D., Callahan, N. B., Clayton, S. M., Cude-Woods, C., Currie, S., Dees, E. B., Fox, W., Geltenbort, P., Hickerson, K. P., Holley, A. T., Liu, C. -Y., Makela, M., Medina, J., Morley, D. J., Morris, C. L., Penttila, S. I., Ramsey, J., Saunders, A., Seestrom, S. J., Sjue, S. K. L., Slaughter, B. A., Sharapov, E. I., Vanderwerp, J., VornDick, B., Walstrom, P. L., Wang, Z., Womack, T. L., Young, A. R.
Publikováno v:
Phys. Rev. C 89, 052501 (2014)
The UCN$\tau$ experiment is designed to measure the lifetime $\tau_{n}$ of the free neutron by trapping ultracold neutrons (UCN) in a magneto-gravitational trap. An asymmetric bowl-shaped NdFeB magnet Halbach array confines low-field-seeking UCN with
Externí odkaz:
http://arxiv.org/abs/1310.5759
Autor:
Sharapov, E. I., Morris, C. L., Makela, M., Saunders, A., Adamek, Evan R., Broussard, L. J., Cude-Woods, C. B., Fellers, Deion E, Geltenbort, Peter, Hartl, M., Hasan, S. I., Hickerson, K. P., Hogan, G., Holley, A. T., Lavelle, C. M., Liu, Chen-Yu, Mendenhall, M. P., Ortiz, J., Pattie Jr., R. W., Ramsey, J., Salvat, D. J., Seestrom, S. J., Shaw, E., Sjue, Sky, Sondheim, W. E., VornDick, B., Wang, Z., Womack, T. L., Young, A. R., Zeck, Bryan A., Phillips, D. G.
Publikováno v:
Phys. Rev. C 88, 064605 (2013)
It is generally accepted that the main cause of ultracold neutron (UCN) losses in storage traps is the upscattering to the thermal energy range by hydrogen adsorbed on the surface of the trap walls. However, the data on which this conclusion is based
Externí odkaz:
http://arxiv.org/abs/1308.2710
Autor:
Sharapov, E. I., Morris, C. L., Makela, M., Saunders, A., Adamek, Evan R., Bagdasarova, Yelena, Broussard, L. J., Cude-Woods, C. B., Fellers, Deon E, Geltenbort, Peter, Hasan, S. I., Hickerson, K. P., Hogan, G., Holley, A. T., Liu, Chen-Yu, Mendenhall, M. P., Ortiz, J., Pattie Jr., R. W., Phillips, D. G., Ramsey, J., Salvat, D. J., Seestrom, S. J., Shaw, E., Sjue, Sky, Sondheim, W. E., VornDick, B., Wang, Z., Womack, T. L., Young, A. R., Zeck, B. A.
The study of neutron cross sections for elements used as efficient ``absorbers'' of ultracold neutrons (UCN) is crucial for many precision experiments in nuclear and particle physics, cosmology and gravity. In this context, ``absorption'' includes bo
Externí odkaz:
http://arxiv.org/abs/1306.1261
Autor:
Mendenhall, M. P., Pattie Jr, R. W., Bagdasarova, Y., Berguno, D. B., Broussard, L. J., Carr, R., Currie, S., Ding, X., Filippone, B. W., García, A., Geltenbort, P., Hickerson, K. P., Hoagland, J., Holley, A. T., Hong, R., Ito, T. M., Knecht, A., Liu, C. -Y., Liu, J. L., Makela, M., Mammei, R. R., Martin, J. W., Melconian, D., Moore, S. D., Morris, C. L., Galván, A. Pérez, Picker, R., Pitt, M. L., Plaster, B., Ramsey, J. C., Rios, R., Saunders, A., Seestrom, S. J., Sharapov, E. I., Sondheim, W. E., Tatar, E., Vogelaar, R. B., VornDick, B., Wrede, C., Young, A. R., Zeck, B. A.
A new measurement of the neutron $\beta$-decay asymmetry $A_0$ has been carried out by the UCNA collaboration using polarized ultracold neutrons (UCN) from the solid deuterium UCN source at the Los Alamos Neutron Science Center (LANSCE). Improvements
Externí odkaz:
http://arxiv.org/abs/1210.7048