Fundamental Neutron Physics: a White Paper on Progress and Prospects in the US

Autor: Alarcon, R., Aleksandrova, A., Baeßler, S., Beck, D. H., Bhattacharya, T., Blatnik, M., Bowles, T. J., Bowman, J. D., Brewington, J., Broussard, L. J., Bryant, A., Burdine, J. F., Caylor, J., Chen, Y., Choi, J. H., Christie, L., Chupp, T. E., Cianciolo, V., Cirigliano, V., Clayton, S. M., Collett, B., Crawford, C., Dekens, W., Demarteau, M., DeMille, D., Dodson, G., Filippone, B. W., Floyd, N., Fomin, N., Fry, J, Fuyuto, K., Gardner, S., Godri, R., Golub, R., Gonzalez, F., Greene, G. L., Gudkov, V., Gupta, R., Hamblen, J., Hayen, L., Hendrus, J C., Hickerson, K., Hills, F. B., Holley, A. T., Hoogerheide, S., Hubert, M., Huffman, P. R., Imam, S. K., Ito, T. M., Jin, L., Jones, G., Komives, A., Korobkina, E., Korsch, W., Leung, K. K. H., Liu, C. -Y., Liu, K. -F., Long, J. C., Mathews, D., Mendelsohn, A., Mereghetti, E., Mohanmurthy, P., Morris, C. L., Mueller, P., Mumm, H. P., Nelsen, A., Nicholson, A., Nico, J., O'Shaughnessy, C. M., Palamure, P. A., Pastore, S., Pattie Jr., R. W., Phan, N. S., Pioquinto, J. A., Plaster, B., Počanić, D., Rahangdale, H., Redwine, R., Reid, A., Salvat, D. J., Saunders, A., Schaper, D., Seng, C. -Y., Singh, M., Shindler, A., Snow, W. M., Tang, Z., Walker-Loud, A., Wong, D. K. -T., Wietfeldt, F., Young, A. R.

Fundamental neutron physics, combining precision measurements and theory, probes particle physics at short range with reach well beyond the highest energies probed by the LHC. Significant US efforts are underway that will probe BSM CP violation with

Externí odkaz: http://arxiv.org/abs/2308.09059

Measurement of the Parity-Odd Angular Distribution of Gamma Rays From Polarized Neutron Capture on $^{35}$Cl

Autor: Fomin, N., Alarcon, R., Alonzi, L., Askanazi, E., Baeßler, S., Balascuta, S., Barrón-Palos, L., Barzilov, A., Blyth, D., Bowman, J. D., Birge, N., Calarco, J. R., Chupp, T. E., Cianciolo, V., Coppola, C. E., Crawford, C. B., Craycraft, K., Evans, D., Fieseler, C., Frlež, E., Fry, J., Garishvili, I., Gericke, M. T. W., Gillis, R. C., Grammer, K. B., Greene, G. L., Hall, J., Hamblen, J., Hayes, C., Iverson, E. B., Kabir, M. L., Kucuker, S., Lauss, B., Mahurin, R., McCrea, M., Maldonado-Velázquez, M., Masuda, Y., Mei, J., Milburn, R., Mueller, P. E., Musgrave, M., Nann, H., Novikov, I., Parsons, D., Penttilä, S. I., Počanić, D., Ramirez-Morales, A., Root, M., Salas-Bacci, A., Santra, S., Schröder, S., Scott, E., Seo, P. -N., Sharapov, E. I., Simmons, F., Snow, W. M., Sprow, A., Stewart, J., Tang, E., Tang, Z., Tong, X., Turkoglu, D. J., Whitehead, R., Wilburn, W. S.

We report a measurement of two energy-weighted gamma cascade angular distributions from polarized slow neutron capture on the ${}^{35}$Cl nucleus, one parity-odd correlation proportional to $\vec{s_{n}} \cdot \vec{k_{\gamma}}$ and one parity-even cor

Externí odkaz: http://arxiv.org/abs/2207.11295

New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the European Spallation Source

Autor: Addazi, A., Anderson, K., Ansell, S., Babu, K., Barrow, J., Baxter, D. V., Bentley, P. M., Berezhiani, Z., Bevilacqua, R., Bohm, C., Brooijmans, G., Broussard, J., Biondi, R., Dev, B., Crawford, C., Dolgov, A., Dunne, K., Fierlinger, P., Fitzsimmons, M. R., Fomin, A., Frost, M., Gardner, S., Galindo-Uribarri, A., Golubeva, E., Girmohanta, S., Greene, G. L., Greenshaw, T., Gudkov, V., Hall-Wilton, R., Heilbronn, L., Herrero-Garcia, J., Ito, G. Ichikawa T. M., Iverson, E., Johansson, T., Joensson, L., Jwa, Y-J., Kamyshkov, Y., Kanaki, K., Kearns, E., Kitaguchi, M., Kittelmann, T., Klinkby, E., Koerner, L. W., Kopeliovich, B., Kozela, A., Kudryatsev, V., Kupsc, A., Lee, Y., Lindroos, M., Makkinje, J., Marquez, J. I., Mohapatra, R., Meirose, B., Miller, T. M., Milstead, D., Morishima, T., Muhrer, G., Mumm, H. P., Nagamoto, K., Nesvizhevsky, V. V., Nilsson, T., Oskarsson, A., Paryev, E., Pattie Jr, R. W., Penttil, S., Pokotilovski, Y. N., Potashnikova, I., Redding, C., Richard, J-M, Ries, D., Rinaldi, E., Ruggles, A., Rybolt, B., Santoro, V., Sarkar, U., Saunders, A., Senjanovic, G., Serebrov, A. P., Shimizu, H. M., Shrock, R., Silverstein, S., Silvermyr, D., Snow, W. M., Takibayev, A., Townsend, L., Tkachev, I., Varriano, L., Vainshtein, A., de VRies, J., Woracek, R., Yamagata, Y., Young, A. R., Zanini, L., Zhang, Z., Zimmer, O.

The violation of Baryon Number, $\mathcal{B}$, is an essential ingredient for the preferential creation of matter over antimatter needed to account for the observed baryon asymmetry in the universe. However, such a process has yet to be experimentall

Externí odkaz: http://arxiv.org/abs/2006.04907

The n$^3$He Experiment: Parity Violation in Polarized Neutron Capture on $^{3}$He

Autor: n3He Collaboration, McCrea, M., Kabir, M. L., Birge, N., Coppola, C. E., Hayes, C., Plemons, E., Ramírez-Morales, A., Scott, E. M., Watts, J., Baessler, S., Barrón-Palos, L., Bowman, J. D., Britton Jr., C., Calarco, J., Cianciolo, V., Crawford, C. B., Ezell, D., Fomin, N., Garishvili, I., Gericke, M. T., Greene, G. L., Hale, G. M., Hamblen, J., Iverson, E., Mueller, P. E., Novikov, I., Penttila, S., Wickersham, C.

Significant progress has been made to experimentally determine a complete set of the parity-violating (PV) weak-interaction amplitudes between nucleons. In this paper we describe the design, construction and operation of the n$^3$He experiment that w

Externí odkaz: http://arxiv.org/abs/2004.10889

The neutron electric dipole moment experiment at the Spallation Neutron Source

Autor: Leung, K. K. H., Ahmed, M., Alarcon, R., Aleksandrova, A., Baeßler, S., Barrón-Palos, L., Bartoszek, L., Beck, D. H., Behzadipour, M., Bessuille, J., Blatnik, M. A., Broering, M., Broussard, L. J., Busch, M., Carr, R., Chu, P. -H., Cianciolo, V., Clayton, S. M., Cooper, M. D., Crawford, C., Currie, S. A., Daurer, C., Dipert, R., Dow, K., Dutta, D., Efremenko, Y., Erickson, C. B., Filippone, B. W., Fomin, N., Gao, H., Golub, R., Gould, C. R., Greene, G. L., Haase, D. G., Hasell, D., Hawari, A. I., Hayden, M. E., Holley, A. T., Holt, R. J., Huffman, P. R., Ihloff, E., Ito, T. M., Kelsey, J., Kim, Y. J., Koivuniemi, J., Korobkina, E., Korsch, W., Lamoreaux, S. K., Leggett, E., Lipman, A., Liu, C. -Y., Long, J., MacDonald, S. W. T., Makela, M., Matlashov, A., Maxwell, J., McCrea, M., Mendenhall, M., Meyer, H. O., Milner, R., Mueller, P., Nouri, N., O'Shaughnessy, C. M., Osthelder, C., Peng, J. -C., Penttila, S., Phan, N. S., Plaster, B., Ramsey, J., Rao, T., Redwine, R. P., Reid, A., Saftah, A., Seidel, G. M., Silvera, I. F., Slutsky, S., Smith, E., Snow, W. M., Sondheim, W., Sosothikul, S., Stanislaus, T. D. S., Sun, X., Swank, C. M., Tang, Z., Dinani, R. Tavakoli, Tsentalovich, E., Vidal, C., Wei, W., White, C. R., Williamson, S. E., Yang, L., Yao, W., Young, A. R.

Novel experimental techniques are required to make the next big leap in neutron electric dipole moment experimental sensitivity, both in terms of statistics and systematic error control. The nEDM experiment at the Spallation Neutron Source (nEDM@SNS)

Externí odkaz: http://arxiv.org/abs/1903.02700