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Your search keyword '"Snow, William A."' showing total 3 results
Start Over Author "Snow, William A." Topic nuclear experiment
3 results on '"Snow, William A."'

1. A Search for Possible Long Range Spin Dependent Interactions of the Neutron From Exotic Vector Boson Exchange

Author

Haddock, Christopher C., Amadio, Joseph, Anderson, Eamon, Barron-Palos, Libertad, Crawford, Bret, Esposito, Daniel, Fox, Walter, Francis, Ian, Fry, Jason, Gardiner, Hanna, Holley, Adam, Korsak, Kirill, Lieffers, Justin, Magers, Scott, Maldonado-Velazquez, Marissa, Mayorov, Dimitry, Nico, Jefferey, Okudaira, Takuya, Paudel, Churamani, Santra, Satyaranjan, Sarsour, Murad, Shimizu, Hirohiko M., Snow, William M., Sprow, Aaron, Steffen, Kyle, Swanson, Erik, Tovesson, Fredrik, Vanderwerp, John, and Yergeau, Peter

Subjects
Nuclear Experiment, High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

We present a search for possible spin dependent interactions of the neutron with matter through exchange of spin 1 bosons with axial vector couplings as envisioned in possible extensions of the Standard Model. This was sought using a slow neutron polarimeter that passed transversely polarized slow neutrons by unpolarized slabs of material arranged so that this interaction would tilt the plane of polarization and develop a component along the neutron momentum. The result for the rotation angle, $\phi'_{V_5} = [2.8\pm\,4.6(stat.)\pm\,4.0(sys.)]\times 10^{-5}~\mbox{rad/m}$ is consistent with zero. This result improves the upper bounds on the neutron-matter coupling $g_{A}^{2}$ from such an interaction by about three orders of magnitude for force ranges in the mm-$\mu$m regime., Comment: 10 pages, 3 figures

Published
2018
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2. Project X: Physics Opportunities

Author

Kronfeld, Andreas S., Tschirhart, Robert S., Al-Binni, Usama, Altmannshofer, Wolfgang, Ankenbrandt, Charles, Babu, Kaladi, Banerjee, Sunanda, Bass, Matthew, Batell, Brian, Baxter, David V., Berezhiani, Zurab, Bergevin, Marc, Bernstein, Robert, Bhattacharya, Sudeb, Bishai, Mary, Blum, Thomas, Bogacz, S. Alex, Brice, Stephen J., Brod, Joachim, Bross, Alan, Buchoff, Michael, Burgess, Thomas W., Carena, Marcela, Castellanos, Luis A., Chattopadhyay, Subhasis, Chen, Mu-Chun, Cherdack, Daniel, Christ, Norman H., Chupp, Tim, Cirigliano, Vincenzo, Coloma, Pilar, Coppola, Christopher E., Cowsik, Ramanath, Crabtree, J. Allen, de Gouvêa, André, Delahaye, Jean-Pierre, Denisov, Dmitri, deNiverville, Patrick, Dharmapalan, Ranjan, Diefenthaler, Markus, Dolgov, Alexander, Dvali, Georgi, Eichten, Estia, Engelfried, Jürgen, Ferguson, Phillip D., Gabriel, Tony, Gal, Avraham, Gallmeier, Franz, Ganezer, Kenneth S., Gardner, Susan, Glenzinski, Douglas, Godfrey, Stephen, Golubeva, Elena S., Gori, Stefania, Graves, Van B., Greene, Geoffrey, Griffard, Cory L., Haisch, Ulrich, Handler, Thomas, Hartfiel, Brandon, Hatzikoutelis, Athanasios, Hawari, Ayman, Heilbronn, Lawrence, Hill, James E., Huber, Patrick, Jaffe, David E., Jiang, Xiaodong, Johnson, Christian, Kamyshkov, Yuri, Kaplan, Daniel M., Kerbikov, Boris, Kiburg, Brendan, Kirk, Harold G., Klein, Andreas, Knoepfel, Kyle, Kopeliovich, Boris, Kopeliovich, Vladimir, Kopp, Joachim, Korsch, Wolfgang, Kribs, Graham, Lipton, Ronald, Liu, Chen-Yu, Lorenzon, Wolfgang, Lu, Zheng-Tian, Makins, Naomi C. R., McKeen, David, Mills, Geoffrey, Mocko, Michael, Mohapatra, Rabindra, Mokhov, Nikolai V., Muhrer, Guenter, Mumm, Pieter, Neuffer, David, Okun, Lev, Palmer, Mark A., Palmer, Robert, Pattie Jr., Robert W., Phillips II, David G., Pitts, Kevin, Pospelov, Maxim, Pronskikh, Vitaly S., Quigg, Chris, Ramberg, Erik, Ray, Amlan, Reimer, Paul E., Richards, David G., Ritz, Adam, Roy, Amit, Ruggles, Arthur, Ryne, Robert, Sarkar, Utpal, Saunders, Andy, Semertzidis, Yannis K., Serebrov, Anatoly, Shimizu, Hirohiko, Shrock, Robert, Sikdar, Arindam K., Snopok, Pavel V., Snow, William M., Soha, Aria, Spanier, Stefan, Striganov, Sergei, Tang, Zhaowen, Townsend, Lawrence, Urheim, Jon, Vainshtein, Arkady, Van de Water, Richard, Van de Water, Ruth S., Van Kooten, Richard J., Wehring, Bernard, Wester III, William C., Whitehead, Lisa, Wilson, Robert J., Worcester, Elizabeth, Young, Albert R., and Zeller, Geralyn

Subjects
High Energy Physics - Experiment, High Energy Physics - Lattice, High Energy Physics - Phenomenology, Nuclear Experiment, Nuclear Theory, Physics - Accelerator Physics
Abstract

Part 2 of "Project X: Accelerator Reference Design, Physics Opportunities, Broader Impacts". In this Part, we outline the particle-physics program that can be achieved with Project X, a staged superconducting linac for intensity-frontier particle physics. Topics include neutrino physics, kaon physics, muon physics, electric dipole moments, neutron-antineutron oscillations, new light particles, hadron structure, hadron spectroscopy, and lattice-QCD calculations. Part 1 is available as arXiv:1306.5022 [physics.acc-ph] and Part 3 is available as arXiv:1306.5024 [physics.acc-ph]., Comment: 209 pp. with many figures; prepared in part for the DPF Community Summer Study; v2 corrects typos (including one author surname), adds an author, and conforms with the version being printed; v3 includes two more chapter authors in full list at the top

Published
2013

3. Laboratory Search for Spin-dependent Short-range Force from Axion-Like-Particles using Optically Polarized 3He gas

Author

Chu, Ping-Han, Dennis, Alec, Fu, ChangBo, Gao, Haiyan, Khatiwada, Rakshya, Laskaris, Georgios, Li, Ke, Smith, Erick, Snow, William Michael, Yan, Haiyang, and Zheng, Wangzhi

Subjects
Nuclear Experiment, High Energy Physics - Experiment, Physics - Atomic Physics
Abstract

The possible existence of short-range forces between unpolarized and polarized spin-1/2 particles has attracted the attention of physicists for decades. These forces are predicted in various theories and provide a possible new source for parity (P) and time reversal (T) symmetry violation. We use an ensemble of polarized 3He gas in a cell with a 250 um thickness glass window to search for a force from scalar boson exchange over a sub-millimeter ranges. This interaction would produce a NMR frequency shift as an unpolarized mass is moved near and far from the polarized ensemble. We report a new upper bound on the product g_{s}g_{p}^{n} of the scalar couplings to the fermions in the unpolarized mass, and the pseudoscalar coupling of the polarized neutron in the 3He nucleus for force ranges from 1e-4 to 1e-2 m, which corresponds to a mass range of 2e-3 to 2e-5 eV for the scalar boson., Comment: 3 figures, submitted to PRL

Published
2012
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