Zobrazeno 1 - 10
of 4 091
pro vyhledávání: '"Hagedorn, C"'
Autor:
Ross, M. P., Fleischer, S. M., Paulson, I. A., Lamb, P., Iritani, B. M., Adelberger, E. G., Hagedorn, C. A., Venkateswara, K., Gettings, C., Shaw, E. A., Apple, S. K., Gundlach, J. H.
We searched for violations of the weak equivalence principle using a cryogenic torsion balance with a pendulum comprised of superconducting niobium and copper. We constrain the E\"otv\"os parameter with 95%-confidence to $\eta_{\text{Nb*-Cu}}~\leq~2.
Externí odkaz:
http://arxiv.org/abs/2407.21232
Autor:
Di Meglio, F. P., Hagedorn, C.
We study charged lepton flavour violation in a scenario in which light neutrino masses are generated via the inverse seesaw mechanism with 3+3 gauge singlet fermions, Ni and Sj, i,j=1,2,3. Lepton mixing is predicted with the help of the flavour symme
Externí odkaz:
http://arxiv.org/abs/2407.19734
Autor:
Fleischer, S. M., Ross, M. P., Venkateswara, K., Hagedorn, C. A., Shaw, E. A., Swanson, E., Heckel, B. R., Gundlach, J. H.
Publikováno v:
Review of Scientific Instruments 93, 064505 (2022)
We describe a liquid-cryogen free cryostat with ultra-low vibration levels which allows for continuous operation of a torsion balance at cryogenic temperatures. The apparatus uses a commercially available two-stage pulse-tube cooler and passive vibra
Externí odkaz:
http://arxiv.org/abs/2206.02890
We used a stationary torsion balance with a beryllium-aluminum composition dipole to search for ultra low-mass bosonic dark matter coupled to baryon minus lepton number. We set 95% confidence limits on the coupling constant $g_{\rm B-L}$ for bosons w
Externí odkaz:
http://arxiv.org/abs/2109.08822
We consider an inverse seesaw mechanism of neutrino mass generation in which the Standard Model is extended by $3+3$ (heavy) sterile states, and endowed with a flavour symmetry $G_f$, $G_f=\Delta (3 \, n^2)$ or $G_f=\Delta (6 \, n^2)$, and a CP symme
Externí odkaz:
http://arxiv.org/abs/2107.07537
Autor:
Ross, M. P., Venkateswara, K., Hagedorn, C. A., Leupold, C. J., Forsyth, P. W. F., Wegner, J. D., Shaw, E. A., Lee, J. G., Gundlach, J. H.
We describe a torsion pendulum with a large mass-quadrupole moment and a resonant frequency of 2.8 mHz, whose angle is measured using a modified Michelson interferometer. The system achieved noise levels of $\sim200\ \text{prad}/\sqrt{\text{Hz}}$ bet
Externí odkaz:
http://arxiv.org/abs/2101.01243
Autor:
Ross, M. P., Hagedorn, C. A., Shaw, E. A., Lockwood, A. L., Iritani, B. M., Lee, J. G., Venkateswara, K., Gundlach, J. H.
Publikováno v:
Phys. Rev. D 101, 102004 (2020)
With a reinterpretation of recent results, the GRACE Follow-On mission can be applied to gravitational wave astronomy. Existing GRACE Follow-On data constrain the stochastic gravitational wave background to $\Omega_{GW}<3.3\times10^{7}$ at 100 mHz. W
Externí odkaz:
http://arxiv.org/abs/2002.02044
Publikováno v:
Int. J. Mod. Phys. A 33, 1842006 (2018)
We review the current status of the data on neutrino masses and lepton mixing and the prospects for measuring the CP-violating phases in the lepton sector. The possible connection between low energy CP violation encoded in the Dirac and Majorana phas
Externí odkaz:
http://arxiv.org/abs/1711.02866
Autor:
Ross, M. P., Venkateswara, K., Hagedorn, C. A., Gundlach, J. H., Kissel, J. S., Warner, J., Radkins, H., Shaffer, T. J., Coughlin, M. W., Bodin, P.
We describe measurements of the rotational component of teleseismic surface waves using an inertial high-precision ground-rotation-sensor installed at the LIGO Hanford Observatory (LHO). The sensor has a noise floor of 0.4 nrad$/ \sqrt{\rm Hz}$ at 50
Externí odkaz:
http://arxiv.org/abs/1707.03084
Autor:
Blanchard, Alain
Publikováno v:
Revue des Études Grecques, 1990 Jan 01. 103(490/491), 292-293.
Externí odkaz:
https://www.jstor.org/stable/44264452
