Light Dark Matter Constraints from SuperCDMS HVeV Detectors Operated Underground with an Anticoincidence Event Selection

Autor: SuperCDMS Collaboration, Albakry, M. F., Alkhatib, I., Alonso-González, D., Amaral, D. W. P., Anczarski, J., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Bathurst, C., Bhattacharyya, R., Biffl, A. J., Brink, P. L., Buchanan, M., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, J. -H., Chen, R., Chott, N., Cooley, J., Coombes, H., Cushman, P., Cyna, R., Das, S., De Brienne, F., Dharani, S., di Vacri, M. L., Diamond, M. D., Elwan, M., Fascione, E., Figueroa-Feliciano, E., Fouts, K., Fritts, M., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Harms, S. A. S., Harris, K., Hassan, N., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Kashyap, V. K. S., Keller, S. T. D., Kelsey, M. H., Kennard, K. T., Kubik, A., Kurinsky, N. A., Lee, M., Leyva, J., Liu, J., Liu, Y., Loer, B., Asamar, E. Lopez, Lukens, P., MacFarlane, D. B., Mahapatra, R., Mammo, J. S., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É., Michielin, E., Mirabolfathi, N., Mirzakhani, M., Mohanty, B., Monteiro, D., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Pandey, L., Pandey, S., Partridge, R., Pedreros, D. S., Peng, W., Perna, L., Perry, W. L., Podviianiuk, R., Poudel, S. S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Rios, M., Roberts, A., Robinson, A. E., Ryan, J. L., Saab, T., Sadek, D., Sadoulet, B., Sahoo, S. P., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Simchony, A., Sincavage, D. J., Sinervo, P., Street, J., Sun, H., Tanner, E., Terry, G. D., Toback, D., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., Zuniga, A., Zurowski, M. J.

This article presents constraints on dark-matter-electron interactions obtained from the first underground data-taking campaign with multiple SuperCDMS HVeV detectors operated in the same housing. An exposure of 7.63 g-days is used to set upper limit

Externí odkaz: http://arxiv.org/abs/2407.08085

The magnetic system SMSS J1606-1000 as a period bouncer

Autor: Kawka, Adela, Vennes, Stephane, Ferrario, Lilia, Bessell, M. S., Keller, S. C., Paunzen, E., Buckley, D. A. H., Groenewald, D., Janik, J., Zejda, M.

We report the discovery of a rare close binary system, SMSS J160639.78-100010.7, comprised of a magnetic white dwarf with a field of about 30 MG and a brown dwarf. We measured an orbital period of 92 min which is consistent with the photometric perio

Externí odkaz: http://arxiv.org/abs/2107.13141

Crystal structure of (2,6-diisopropyl-phenyl)-[6-(2,6-dimethyl-phenyl)- pyridin-2-yl-methylene]-aminopalladium(II) dichloromethane trisolvate, Pd(C26H30N2)Cl2 · 3CH2Cl2

Autor: Maisel H., Keller S., Irrgang T., Kempe R.

Publikováno v: Zeitschrift für Kristallographie - New Crystal Structures, Vol 220, Iss 3, Pp 465-466 (2005)

C29H36Cl8N2Pd, orthorhombic, P212121 (no. 19), a = 16.5460(8) Å, b = 17.995(1) Å, c = 11.817(1) Å, V = 3518.5 Å3, Z = 4, Rgt(F) = 0.037, wRref(F2) = 0.099, T = 193 K.

Externí odkaz: https://doaj.org/article/01016d2e8d5d4b2aae3fbee50be5e8cd

Keck HIRES Spectroscopy of SkyMapper Commissioning Survey Candidate Extremely Metal-Poor Stars

Autor: Marino, A. F., Da Costa, G. S., Casey, A. R., Asplund, M., Bessell, M. S., Frebel, A., Keller, S. C., Lind, K., Mackey, A. D., Murphy, S. J., Nordlander, T., Norris, J. E., Schmidt, B. P., Yong, D.

We present results from the analysis of high-resolution spectra obtained with the Keck HIRES spectrograph for a sample of 17 candidate extremely metal-poor (EMP) stars originally selected from commissioning data obtained with the SkyMapper telescope.

Externí odkaz: http://arxiv.org/abs/1902.10611

Lack of correlation between the spin mixing conductance and the ISHE-generated voltages in CoFeB/Pt,Ta bilayers

Autor: Conca, A., Heinz, B., Schweizer, M. R., Keller, S., Papaioannou, E. Th., Hillebrands, B.

Publikováno v: Phys. Rev. B 95, 174426 (2017)

We investigate spin pumping phenomena in polycrystalline CoFeB/Pt and CoFeB/Ta bilayers and the correlation between the effective spin mixing conductance $g^{\uparrow\downarrow}_{\rm eff}$ and the obtained voltages generated by the spin-to-charge cur

Externí odkaz: http://arxiv.org/abs/1701.09110