Qweak: First Direct Measurement of the Proton’s Weak Charge

Autor: Androic D., Armstrong D.S., Asaturyan A., Averett T., Balewski J., Bartlett K., Beaufait J., Beminiwattha R.S., Benesch J., Benmokhtar F., Birchall J., Carlini R.D., Cates G.D., Cornejo J.C., Covrig S., Dalton M.M., Davis C.A., Deconinck W., Diefenbach J., Dowd J.F., Dunne J.A., Dutta D., Duvall W.S., Elaasar M., Falk W.R., Finn J.M., Forest T., Gal C., Gaskell D., Gericke M.T.W., Grames J., Gray V.M., Grimm K., Guo F., Hoskins J.R., Johnston K., Jones D., Jones M., Jones R., Kargiantoulakis M., King P.M., Korkmaz E., Kowalski S., Leacock J., Leckey J., Lee A.R., Lee J.H., Lee L., MacEwan S., Mack D., Magee J.A., Mahurin R., Mammei J., Martin J.W., McHugh M.J., Meekins D., Mei J., Michaels R., Micherdzinska A., Mkrtchyan A., Mkrtchyan H., Morgan N., Myers K.E., Narayan A., Ndukum L.Z., Nelyubin V., Nuhait H., Nuruzzaman, van Oers W.T.H, Opper A.K., Page S.A., Pan J., Paschke K.D., Phillips S.K., Pitt M.L., Poelker M., Rajotte J.F., Ramsay W.D., Roche J., Sawatzky B., Seva T., Shabestari M.H., Silwal R., Simicevic N., Smith G.R., Solvignon P., Spayde D.T., Subedi A., Subedi R., Suleiman R., Tadevosyan V., Tobias W.A., Tvaskis V., Waidyawansa B., Wang P., Wells S.P., Wood S.A., Yang S., Young R.D., Zang P., Zhamkochyan S.

Publikováno v: EPJ Web of Conferences, Vol 137, p 08005 (2017)

The Qweak experiment, which took data at Jefferson Lab in the period 2010 - 2012, will precisely determine the weak charge of the proton by measuring the parity-violating asymmetry in elastic e-p scattering at 1.1 GeV using a longitudinally polarized

Externí odkaz: https://doaj.org/article/0f8c514adbd84ff7a8549bfb7a3b5590

Measurement of the Beam-Normal Single-Spin Asymmetry for Elastic Electron Scattering from $^{12}$C and $^{27}$Al

Autor: QWeak Collaboration, Androic, D., Armstrong, D. S., Asaturyan, A., Bartlett, K., Beminiwattha, R. S., Benesch, J., Benmokhtar, F., Birchall, J., Carlini, R. D., Christy, M. E., Cornejo, J. C., Dusa, S. Covrig, Dalton, M. M., Davis, C. A., Deconinck, W., Dowd, J. F., Dunne, J. A., Dutta, D., Duvall, W. S., Elassar, M., Falk, W. R., Finn, J. M., Forest, T., Gal, C., Gaskell, D., Gericke, M. T. W., Gray, V. M., Guo, F., Hoskins, J. R., Jones, D. C., Kargiantoulakis, M., King, P. M., Korkmaz, E., Kowalski, S., Leacock, J., Leckey, J. P., Lee, A. R., Lee, J. H., Lee, L., MacEwan, S., Mack, D., Magee, J. A., Mahurin, R., Mammei, J., Martin, J. W., McHugh, M. J., Meekins, D., Mesick, K. E., Michaels, R., Mkrtchyan, A., Mkrtchyan, H., Narayan, A., Ndukum, L. Z., Nuruzzaman, Nelyubin, V., van Oers, W. T. H, Owen, V. F., Page, S. A., Pan, J., Paschke, K. D., Phillips, S. K., Pitt, M. L., Radloff, R. W., Rajotte, J. F., Ramsay, W. D., Roche, J., Sawatzky, B., Seva, T., Shabestari, M. H., Silwal, R., Simicevic, N., Smith, G. R., Solvignon, P., Spayde, D. T., Subedi, A., Subedi, R., Tadevosyan, V., Tobias, W. A., Waidyawansa, B., Wang, P., Wells, S. P., Wood, S. A., Zang, P., Zhamkochyan, S.

Publikováno v: Phys. Rev. C 104, 014606 (2021)

We report measurements of the parity-conserving beam-normal single-spin elastic scattering asymmetries $B_n$ on $^{12}$C and $^{27}$Al, obtained with an electron beam polarized transverse to its momentum direction. These measurements add an additiona

Externí odkaz: http://arxiv.org/abs/2103.09758

Spectroscopy of $A=9$ hyperlithium by the $(e,e^{\prime}K^{+})$ reaction

Autor: Gogami, T., Chen, C., Kawama, D., Achenbach, P., Ahmidouch, A., Albayrak, I., Androic, D., Asaturyan, A., Asaturyan, R., Ates, O., Baturin, P., Badui, R., Boeglin, W., Bono, J., Brash, E., Carter, P., Chiba, A., Christy, E., Danagoulian, S., De Leo, R., Doi, D., Elaasar, M., Ent, R., Fujii, Y., Fujita, M., Furic, M., Gabrielyan, M., Gan, L., Garibaldi, F., Gaskell, D., Gasparian, A., Han, Y., Hashimoto, O., Horn, T., Hu, B., Hungerford, Ed. V., Jones, M., Kanda, H., Kaneta, M., Kato, S., Kawai, M., Khanal, H., Kohl, M., Liyanage, A., Luo, W., Maeda, K., Margaryan, A., Markowitz, P., Maruta, T., Matsumura, A., Maxwell, V., Meekins, D., Mkrtchyan, A., Mkrtchyan, H., Nagao, S., Nakamura, S. N., Narayan, A., Neville, C., Niculescu, G., Niculescu, M. I., Nunez, A., Nuruzzaman, Okayasu, Y., Petkovic, T., Pochodzalla, J., Qiu, X., Reinhold, J., Rodriguez, V. M., Samanta, C., Sawatzky, B., Seva, T., Shichijo, A., Tadevosyan, V., Tang, L., Taniya, N., Tsukada, K., Veilleux, M., Vulcan, W., Wesselmann, F. R., Wood, S. A., Yamamoto, T., Ya, L., Ye, Z., Yokota, K., Yuan, L., Zhamkochyan, S., Zhu, L.

Publikováno v: Phys. Rev. C 103, 041301 (2021)

Missing mass spectroscopy with the $(e,e^{\prime}K^{+})$ reaction was performed at Jefferson Laboratory's Hall C for the neutron rich $\Lambda$ hypernucleus $^{9}_{\Lambda}{\rm Li}$. The ground state energy was obtained to be $B_{\Lambda}^{\rm g.s.}=

Externí odkaz: http://arxiv.org/abs/2102.04437

Recent results from the G0 experiment

Autor: Roos P., Roche J., Ramsay W.D., Quinn B., Poelker M., Pitt M.L., Pillot P., Phillips S.K., Pate S.F., Papavassiliou V., Page S.A., van Oers W.T.H., Muether M., Mkrtchyan H., Mihovilovic M., Micherdzinska A., McKeown R.D., Martin J.W., Mammei J., Lung A., Liu J., Lee L., Kox S., Korsch W., King P.M., Jones M., Horn T., Hansknecht J., Guillard G., Grames J., Gericke M.T.W., Gaskell D., Furget C., Franklin G., Flores G., Davis C.A., Ellis C., Coppens A., Chao Y.-C., Capuano C.L., Breuer H., Bosted P., Birchall J., Benmokhtar F., Bimbot L., Benesch J., Beise E.J., Beck D.H., Bailey S.L., Arvieux J., Armstrong D.S., Androić D., Real J.S., Schaub J., Seva T., Simicevic N., Smith G.R., Spayde D.T., Stutzman M., Suleiman R., Tadevosyan V., Versteegen M., Voutier E., Vulcan W., Wells S.P., Williamson S.E., Wood S.A.

Publikováno v: EPJ Web of Conferences, Vol 3, p 03004 (2010)

We have measured parity violating asymmetries in elastic electron-proton and quasi-elastic electrondeuteron scattering at backward electron angle. These measurements have been done at two momentum transfers : Q2 = 0.22 and 0.63 (GeV/c)2 . Together wi

Externí odkaz: https://doaj.org/article/743cb8a019bd49979ea7b8e0a6b67c93

Precision Measurement of the Weak Charge of the Proton

Autor: Androic, D., Armstrong, D. S., Asaturyan, A., Averett, T., Balewski, J., Bartlett, K., Beaufait, J., Beminiwattha, R. S., Benesch, J., Benmokhtar, F., Birchall, J., Carlini, R. D., Cornejo, J. C., Dusa, S. Covrig, Dalton, M. M., Davis, C. A., Deconinck, W., Diefenbach, J., Dowd, J. F., Dunne, J. A., Dutta, D., Duvall, W. S., Elaasar, M., Falk, W. R., Finn, J. M., Forest, T., Gal, C., Gaskell, D., Gericke, M. T. W., Grames, J., Gray, V. M., Grimm, K., Guo, F., Hoskins, J. R., Jones, D., Jones, M., Jones, R., Kargiantoulakis, M., King, P. M., Korkmaz, E., Kowalski, S., Leacock, J., Leckey, J., Lee, A. R., Lee, J. H., Lee, L., MacEwan, S., Mack, D., Magee, J. A., Mahurin, R., Mammei, J., Martin, J. W., McHugh, M. J., Meekins, D., Mei, J., Mesick, K. E., Michaels, R., Micherdzinska, A., Mkrtchyan, A., Mkrtchyan, H., Morgan, N., Narayan, A., Ndukum, L. Z., Nelyubin, V., Nuhait, H., Nuruzzaman, van Oers, W. T. H., Opper, A. K., Page, S. A., Pan, J., Paschke, K. D., Phillips, S. K., Pitt, M. L., Poelker, M., Rajotte, J. F., Ramsay, W. D., Roche, J., Sawatzky, B., Seva, T., Shabestari, M. H., Silwal, R., Simicevic, N., Smith, G. R., Solvignon, P., Spayde, D. T., Subedi, A., Subedi, R., Suleiman, R., Tadevosyan, V., Tobias, W. A., Tvaskis, V., Waidyawansa, B., Wang, P., Wells, S. P., Wood, S. A., Yang, S., Young, R. D., Zang, P., Zhamkochyan, S.

Publikováno v: Nature 557, 207-211 (2018)

The fields of particle and nuclear physics have undertaken extensive programs to search for evidence of physics beyond that explained by current theories. The observation of the Higgs boson at the Large Hadron Collider completed the set of particles

Externí odkaz: http://arxiv.org/abs/1905.08283