Sneutrino mass measurements ate+e−linear colliders

Advantages of the e-e- option at linear colliders for the study of supersymmetry are highlighted. The fermion number violating process [Formula: see text] provides unique opportunities for studies of slepton masses and flavor mixings. In particular, slepton mass measurements at the 100 MeV level through threshold scans of scalar pair production may be possible. Such measurements are over an order of magnitude better than those possible in e+e- mode, require far less integrated luminosity, and may lead to precise, model-independent measurements of tan β. Implications for studying gauginos and the importance of accurate beam polarimetry are also discussed.

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Radial mass analysis of unstained STEM images of molluscan hemocyanins

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100161618 ◽

1990 ◽

Vol 48 (3) ◽

pp. 810-811

Author(s):

M.G. Hamilton ◽

T.T. Herskovits ◽

J.S. Wall

Keyword(s):

Image Analysis ◽

Hollow Cylinder ◽

Electron Micrographs ◽

Side View ◽

Mass Analysis ◽

Mass Measurements ◽

Electron Microscopic ◽

Transmission Electron ◽

Transmission Electron Microscopic ◽

Microscopic Studies

The hemocyanins of molluscs are aggregates of a cylindrical decameric subparticle that assembles into di-, tri-, tetra-, penta-, and larger multi-decameric particles with masses that are multiples of the 4.4 Md decamer. Electron micrographs of these hemocyanins typically show the particles with two profiles: circular representing the cylinder viewed from the end and rectangular representing the side-view of the hollow cylinder.The model proposed by Mellema and Klug from image analysis of a didecameric hemocyanin with the two decamers facing one another with collar (closed) ends outward fits the appearance of side-views of the negatively-stained cylinders. These authors also suggested that there might be caps at the ends. In one of a series of transmission electron microscopic studies of molluscan hemocyanins, Siezen and Van Bruggen supported the Mellema-Klug model, but stated that they had never observed a cap component. With STEM we have tested the end cap hypothesis by direct mass measurements across the end-views of unstained particles.

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Revisiting the Analysis of the Isochronous Mass Measurements of Uranium Fission Fragments at the ESR

EPJ Web of Conferences ◽

10.1051/epjconf/202022702012 ◽

2020 ◽

Vol 227 ◽

pp. 02012

Author(s):

R. S. Sidhu ◽

R. J. Chen ◽

Yu. A Litvinov ◽

Y. H. Zhang ◽

Keyword(s):

Experimental Data ◽

Data Analysis ◽

State Of The Art ◽

Fission Products ◽

Mass Measurements ◽

Fission Fragments ◽

Uranium Fission

The re-analysis of experimental data on mass measurements of ura- nium fission products obtained at the ESR in 2002 is discussed. State-of-the-art data analysis procedures developed for such measurements are employed.

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Native mitochondrial creatine kinase forms octameric structures. II. Characterization of dimers and octamers by ultracentrifugation, direct mass measurements by scanning transmission electron microscopy, and image analysis of single mitochondrial creatine kinase octamers.

Journal of Biological Chemistry ◽

10.1016/s0021-9258(18)37483-0 ◽

1988 ◽

Vol 263 (32) ◽

pp. 16954-16962 ◽

Cited By ~ 8

Author(s):

T Schnyder ◽

A Engel ◽

A Lustig ◽

T Wallimann

Keyword(s):

Electron Microscopy ◽

Transmission Electron Microscopy ◽

Image Analysis ◽

Creatine Kinase ◽

Scanning Transmission Electron Microscopy ◽

Mitochondrial Creatine Kinase ◽

Mass Measurements ◽

Transmission Electron ◽

Scanning Transmission

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Rheology of rounded mammalian cells over continuous high-frequencies

Nature Communications ◽

10.1038/s41467-021-23158-0 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Gotthold Fläschner ◽

Cosmin I. Roman ◽

Nico Strohmeyer ◽

David Martinez-Martin ◽

Daniel J. Müller

Keyword(s):

High Frequency ◽

Mammalian Cells ◽

Mechanical Response ◽

Cell Mass ◽

Low Frequency ◽

Mass Measurements ◽

High Frequencies ◽

Polymer Relaxation ◽

Continuous Frequency ◽

Rheological Experiments

AbstractUnderstanding the viscoelastic properties of living cells and their relation to cell state and morphology remains challenging. Low-frequency mechanical perturbations have contributed considerably to the understanding, yet higher frequencies promise to elucidate the link between cellular and molecular properties, such as polymer relaxation and monomer reaction kinetics. Here, we introduce an assay, that uses an actuated microcantilever to confine a single, rounded cell on a second microcantilever, which measures the cell mechanical response across a continuous frequency range ≈ 1–40 kHz. Cell mass measurements and optical microscopy are co-implemented. The fast, high-frequency measurements are applied to rheologically monitor cellular stiffening. We find that the rheology of rounded HeLa cells obeys a cytoskeleton-dependent power-law, similar to spread cells. Cell size and viscoelasticity are uncorrelated, which contrasts an assumption based on the Laplace law. Together with the presented theory of mechanical de-embedding, our assay is generally applicable to other rheological experiments.

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Kinematic focus point method for particle mass measurements in missing energy events

Journal of High Energy Physics ◽

10.1007/jhep10(2019)154 ◽

2019 ◽

Vol 2019 (10) ◽

Cited By ~ 1

Author(s):

Doojin Kim ◽

Konstantin T. Matchev ◽

Prasanth Shyamsundar

Keyword(s):

Point Method ◽

Particle Mass ◽

Missing Energy ◽

Mass Measurements ◽

Focus Point

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Transverse wakefield suppression using cell detuning assisted by manifold damping for high gradient linear colliders

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ◽

10.1016/j.nima.2011.04.061 ◽

2011 ◽

Vol 657 (1) ◽

pp. 59-70

Author(s):

Roger M. Jones

Keyword(s):

High Gradient ◽

Linear Colliders

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Nuclear mass measurements with radioactive ion beams

International Journal of Modern Physics E ◽

10.1142/s0218301319300054 ◽

2019 ◽

Vol 28 (04) ◽

pp. 1930005 ◽

Cited By ~ 2

Author(s):

Michael A. Famiano

Keyword(s):

Mass Measurement ◽

Measurement Techniques ◽

Nuclear Mass ◽

Mass Measurements ◽

Future Directions ◽

Advantages And Disadvantages ◽

Nuclear Masses ◽

Under Construction ◽

Very High ◽

Practical Constraints

Nuclear masses are the most fundamental of all nuclear properties, yet they can provide a wealth of knowledge, including information on astrophysical sites, constraints on existing theory, and fundamental symmetries. In nearly all applications, it is necessary to measure nuclear masses with very high precision. As mass measurements push to more short-lived and more massive nuclei, the practical constraints on mass measurement techniques become more exacting. Various techniques used to measure nuclear masses, including their advantages and disadvantages are described. Descriptions of some of the world facilities at which the nuclear mass measurements are performed are given, and brief summaries of planned facilities are presented. Future directions are mentioned, and conclusions are presented which provide a possible outlook and emphasis on upcoming plans for nuclear mass measurements at existing facilities, those under construction, and those being planned.

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