Zobrazeno 1 - 10
of 140
pro vyhledávání: '"Seestrom, S"'
Autor:
Musedinovic, R., Blokland, L. S., Cude-Woods, C. B., Singh, M., Blatnik, M. A., Callahan, N., Choi, J. H., Clayton, S., Filippone, B. W., Fox, W. R., Fries, E., Geltenbort, P., Gonzalez, F. M., Hayen, L., Hickerson, K. P., Holley, A. T., Ito, T. M., Komives, A., Lin, S, Liu, Chen-Yu, Makela, M. F., O'Shaughnessy, C. M., Pattie Jr, R. W., Ramsey, J. C., Salvat, D. J., Saunders, A., Seestrom, S. J., Sharapov, E. I., Tang, Z., Uhrich, F. W., Vanderwerp, J., Walstrom, P., Wang, Z., Young, A. R., Morris, C. L.
Here we publish three years of data for the UCNtau experiment performed at the Los Alamos Ultra Cold Neutron Facility at the Los Alamos Neutron Science Center. These data are in addition to our previously published data. Our goals in this paper are t
Externí odkaz:
http://arxiv.org/abs/2409.05560
Autor:
Blatnik, M. F., Blokland, L. S., Callahan, N., Choi, J. H., Clayton, S., Cude-Woods, C. B, Filippone, B. W., Fox, W. R., Fries, E., Geltenbort, P., Gonzalez, F. M., Hayen, L., Hickerson, K. P., Holley, A. T., Ito, T. M., Komives, A., Lin, S, Liu, Chen-Yu, Makela, M. F., Morris, C. L., Musedinovic, R., O'Shaughnessy, C. M., Pattie Jr., R. W., Ramsey, J. C., Salvat, D. J., Saunders, A., Seestrom, S. J., Sharapov, E. I., Singh, M., Tang, Z., Uhrich, W. F., Vanderwerp, J., Walstrom, P., Wang, Z., Young, A. R.
The past two decades have yielded several new measurements and reanalysis of older measurements of the neutron lifetime. These have led to a 4.4 standard deviation discrepancy between the most precise measurements of the neutron decay rate producing
Externí odkaz:
http://arxiv.org/abs/2406.10378
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:
Kuk, K., Cude-Woods, C., Chavez, C. R., Choi, J. H., Estrada, J., Hoffbauer, M., Makela, M., Merkel, P., Morris, C. L., Ramberg, E., Wang, Z., Bailey, T., Blatnik, M., Adamek, E. R., Broussard, L. J., Brown, M. A. -P., Callahan, N. B., Clayton, S. M., Currie, S. A., Ding, X., Dinger, D., Filippone, B., Fries, E. M., Geltenbort, P., George, E., Gonzalez, F., Hickerson, K. P., Hoffman, K., Holley, A. T., Ito, T. M., MacDonald, S. W. T., Liu, C. -Y., O'Shaughnessy, C., Pattie, Jr., R. W., Phillips II, D. G., Plaster, B., Salvat, D. J., Saunders, A., Seestrom, S., Sharapov, E. I., Sjue, S. K. L., Su, V., Sun, X., Tang, Z., Walstrom, P. L., Wei, W., Wexler, J. W., Womack, T. L., Young, A. R., Zeck, B. A., collaboration, UCN
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A, Volume 1003, 1 July 2021, 165306
A new boron-coated CCD camera is described for direct detection of ultracold neutrons (UCN) through the capture reactions $^{10}$B (n,$\alpha$0$\gamma$)$^7$Li (6%) and $^{10}$B(n,$\alpha$1$\gamma$)$^7$Li (94%). The experiments, which extend earlier w
Externí odkaz:
http://arxiv.org/abs/1903.01335
Autor:
Callahan, Nathan, Liu, Chen-Yu, Gonzalez, Francisco, Adamek, Evan, Bowman, James David, Broussard, Leah, Clayton, S. M., Currie, S., Cude-Woods, C., Dees, E. B., Ding, X., Egnel, E. M., Fellers, D., Fox, W., Geltenbort, P., Hickerson, K. P., Hoffbauer, M. A., Holley, A. T., Komives, A., MacDonald, S. W. T., Makela, M., Morris, C. L., Ortiz, J. D., Pattie Jr, R. W., Ramsey, J., Salvat, D. J., Saunders, A., Seestrom, S. J., Sharapov, E. I., Sjue, S. K. L., Tang, Z., Vanderwerp, J., Vogelaar, B., Walstrom, P. L., Wang, Z., Weaver, H., Wei, W., Wexler, J., Young, A. R., Zeck, B. A.
Publikováno v:
Phys. Rev. C 100, 015501 (2019)
In the UCN{\tau} experiment, ultracold neutrons (UCN) are confined by magnetic fields and the Earth's gravitational field. Field-trapping mitigates the problem of UCN loss on material surfaces, which caused the largest correction in prior neutron exp
Externí odkaz:
http://arxiv.org/abs/1810.07691
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:
Pattie Jr., R. W., Callahan, N. B., Cude-Woods, C., Adamek, E. R., Broussard, L. J., Clayton, S. M., Currie, S. A., Dees, E. B., Ding, X., Engel, E. M., Fellers, D. E., Fox, W., Hickerson, K. P., Hoffbauer, M. A., Holley, A. T., Komives, A., Liu, C. -Y., MacDonald, S. W. T., Makela, M., Morris, C. L., Ortiz, J. D., Ramsey, J., Salvat, D. J., Saunders, A., Seestrom, S. J., Sharapov, E. I., Sjue, S. K., Tang, Z., Vanderwerp, J., Vogelaar, B., Walstrom, P. L., Wang, Z., Wei, W., Weaver, H. L., Wexler, J. W., Womack, T. L., Young, A. R., Zeck, B. A.
The precise value of the mean neutron lifetime, $\tau_n$, plays an important role in nuclear and particle physics and cosmology. It is a key input for predicting the ratio of protons to helium atoms in the primordial universe and is used to search fo
Externí odkaz:
http://arxiv.org/abs/1707.01817
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:
Morris, C. L., Adamek, E. R., Broussard, L. J., Callahan, N. B., Clayton, S. M., Cude-Woods, C., Currie, S. A., Ding, X., Fox, W., Hickerson, K. P., Holley, A. T., Komives, A., Liu, C. -Y., Makela, M., Pattie Jr., R. W., Ramsey, J., Salvat, D. J., Saunders, A., Seestrom, S. J., Sharapov, E. I., Sjue, S. K., Tang, Z., Vanderwerp, J., Vogelaar, B., Walstrom, P. L., Wang, Z., Wei, Wanchun, Wexler, J. W., Womack, T. L., Young, A. R., Zeck, B. A.
The neutron lifetime is important in understanding the production of light nuclei in the first minutes after the big bang and it provides basic information on the charged weak current of the standard model of particle physics. Two different methods h
Externí odkaz:
http://arxiv.org/abs/1610.04560
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