K. Nakamura

Publication List Details

Period

1975 - 9999

Number

485

Co-Authors

High Heat Flux Experiment on B4C-Overlaid C/C Composites for Plasma Facing Materials of JT-60U. (9999)

Nakamura, K., Akiba, M., Suzuki, S., Yokoyama, K., Dairaku, M.

High heat flux experiments (5-40MW/sq meter, 5 s and 550MW/sq meter, 5-10 ms) in the JAERI electron beam irradiation stand (JEBIS) have been carried out on the three kinds (conversion, CVD and LLPS)...

Modification of Angular Velocity by Inhomogeneous MRI Growth in Protoplanetary Disks (2008)

Kato, M. T., Nakamura, K., Tandokoro, R., Fujimoto, M., Ida, S.

We have investigated evolution of magneto-rotational instability (MRI) in protoplanetary disks that have radially non-uniform magnetic field such that stable and unstable regions coexist initially,...

Broadband Single-Shot Electron Spectrometer for GeV-Class Laser Plasma Based Accelerators (2008)

Nakamura, K.

Laser-plasma-based accelerators can provide electrons over a broad energy range and/or with large momentum spread. The electron beam energy distribution can be controlled via accurate control of...

Hydrothermal activity on the southern Mid-Atlantic Ridge: Tectonically- and volcanically-controlled venting at 4–5°S (2008)

German, C.R., Bennett, S.A., Connelly, D.P., Evans, A.J., Murton, B.J., Parson, L.M., ...

We report results from an investigation of the geologic processes controlling hydrothermal activity along the previously-unstudied southern Mid-Atlantic Ridge (3–7°S). Our study employed the NOC...

High Quality Electron Bunches up to 1 GeV from Laser Wakefield Acceleration at LBNL (2008)

Esarey, E., Nagler, B., Gonsalves, A.J., Toth, Cs., Nakamura, K., Geddes, C.G.R., ...

Experiments at the LOASIS laboratory of LBNL have demonstrated production of 100 MeV to 1 GeV electron bunches with low energy spread and low divergence from laser wakefield acceleration. The...

GeV electron beams from cm-scale channel guided laser wakefield accelerator (2008)

Nakamura, K., Nagler, B., Toth, Cs., Geddes, C.G.R., Schroeder, C., Esarey, E., ...

Laser-wakefield accelerators (LWFA) can produce electric fields of order 10-100 GV/m suitable for acceleration of electrons to relativistic energies. The wakefields are excited by a relativistically...

Low energy spread 100 MeV-1 GeV electron bunches from laser wakefiel d acceleration at LOASIS (2008)

Geddes, C.G.R., Esarey, E., Michel, P., Nagler, B., Nakamura, K., Plateau, G.R., ...

Experiments at the LOASIS laboratory of LBNL recently demonstrated production of 100 MeV electron beams with low energy spread and low divergence from laser wakefield acceleration. The radiation...

Evidence for D0-D-bar0 Mixing using the CDF II Detector (2008)

Aaltonen, T., Adelman, J., Akimoto, T., G. Albrow, M., Álvarez González, B., Amerio, S., ...

We measure the time dependence of the ratio of decay rates for the rare decay D0 --> K+ pi+- to the Cabibbo-favored decay D0 --> K- pi++. We use a signal of 12.7 x 103 D0 --> K+ pi+- decays with...

Evidence for D0-D-bar0 Mixing using the CDF II Detector (2008)

Aaltonen, T., Adelman, J., Akimoto, T., G. Albrow, M., Álvarez González, B., Amerio, S., ...

We measure the time dependence of the ratio of decay rates for the rare decay D0 --> K+ pi+- to the Cabibbo-favored decay D0 --> K- pi++. We use a signal of 12.7 x 103 D0 --> K+ pi+- decays with...

Stable Electron Beams With Low Absolute Energy Spread From a Laser Wakefield Accelerator With Plasma Density Ramp Controlled Injection (2008)

Geddes, Cameron G.R., Cormier-Michel, E., Esarey, E., Leemans, W.P., Nakamura, K., Panasenko, D., ...

Laser wakefield accelerators produce accelerating gradients up to hundreds of GeV/m, and recently demonstrated 1-10 MeV energy spread at energies up to 1 GeV using electrons self-trapped from the...

Alignment of the Pixel and SCT Modules for the 2004 ATLAS Combined Test Beam (2008)

Ahmad, A., Andreazza, A., Atkinson, T., Baines, J., Barr, A. J., Beccherle, R., ...

A small set of final prototypes of the ATLAS Inner Detector silicon tracker (Pixel and SCT) were used to take data during the 2004 Combined Test Beam. Data were collected from runs with beams of...

GeV electron beams from a laser-plasma accelerator (2008)

Schroeder, C.B., Toth, Cs., Nagler, B., Gonsalves, A.J., Nakamura, K., Geddes, C.G.R., ...

High-quality electron beams with up to 1 GeV energy have been generated by a laser-driven plasma-based accelerator by guiding a 40 TW peak power laser pulse in a 3.3 cm long gas-filled capillary...

GeV electron beams from a centimeter-scale laser-driven plasma accelerator (2008)

Gonsalves, A., Nakamura, K., Panasenko, D., Toth, Cs., Esarey, E., ...

esults are presented on the generation of quasi-monoenergeticelectron beams with energy up to 1GeV using a 40TW laser and a 3.3 cm-long hydrogen-filled capillary discharge waveguide. Electron beams...

Performance of MPGD-based TPC prototypes for the linear collider experiment (2008)

Kobayashi, M., Araki, T., Arogancia, D.C., Bacala, A.M., Boudjemline, K., Burke, D., ...

We conducted a series of beam tests of prototype TPCs for the International Linear Collider (ILC) experiment, equipped with an MWPC, a MicroMEGAS, or GEMs as a readout device. The prototype operated...

Performance of MPGD-based TPC prototypes for the linear collider experiment (2008)

Kobayashi, M., Araki, T., Arogancia, D.C., Bacala, A.M., Boudjemline, K., Burke, D., ...

We conducted a series of beam tests of prototype TPCs for the International Linear Collider (ILC) experiment, equipped with an MWPC, a MicroMEGAS, or GEMs as a readout device. The prototype operated...

Performance of MPGD-based TPC prototypes for the linear collider experiment (2008)

Kobayashi, M., Araki, T., Arogancia, D.C., Bacala, A.M., Boudjemline, K., Burke, D., ...

We conducted a series of beam tests of prototype TPCs for the International Linear Collider (ILC) experiment, equipped with an MWPC, a MicroMEGAS, or GEMs as a readout device. The prototype operated...

Recent advances in the LHD experiment (2008)

Motojima, O., Ohyabu, N., Komori, A., Kaneko, O., Yamada, H., Kawahata, K., ...

In the first four years of the LHD experiment, several encouraging results have emerged, the most significant of which is that MHD stability and good transport are compatible in the inward shifted...

Search for third generation vector leptoquarks in p(p)over-barcollisions at root s=1.96 TeV (2008)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M. G., ...

We search for a third generation vector leptoquark (VLQ3) that decays to a b quark and tau lepton using the CDF II detector and 320 pb(-1) of integrated luminosity from the Fermilab Tevatron....

Measurement of correlated b(b)over-bar production in p(p)over-bar collisions at root s=1960 GeV (2008)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M. G., ...

We present a measurement of the correlated b (b) over bar production cross section. The data used in this analysis were taken with the upgraded CDF detector (CDF II) at the Fermilab Tevatron...

First run II measurement of the W boson mass at the Fermilab Tevatron (2008)

Aaltonen, T., Abulencia, A., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., ...

We describe a measurement of the W boson mass m(W) using 200 pb(-1) of root s=1.96 TeV p (p) over bar collision data taken with the CDF II detector. With a sample of 63 964 W -> e nu candidates and...

Measurement of the cross section for W-boson production in association with jets in p(p)over-bar collisions at root s=1.96 TeV (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B., Amerio, S., ...

We present a measurement of the cross section for W-boson production in association with jets in p (p) over bar collisions at root s =1.96 TeV. The analysis uses a data sample corresponding to an...

Two-particle momentum correlations in jets produced in p(p)over-barcollisions at root s=1.96 TeV (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

We present the first measurement of two-particle momentum correlations in jets produced in p (p) over bar collisions at root s = 1.96 TeV. Results are obtained for charged particles within a...

Measurement of ratios of fragmentation fractions for bottom hadrons in p(p)over-bar collisions at root s=1.96 TeV (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

This paper describes the first measurement of b-quark fragmentation fractions into bottom hadrons in Run II of the Tevatron Collider at Fermilab. The result is based on a 360 pb(-1) sample of data...

Limits on the production of narrow t(t)over-bar resonances in p(p)over-bar collisions at root s=1.96 TeV (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

We search for evidence of resonant top quark pair production in 955 pb(-1) of p (p) over bar collisions at root s = 1: 96 TeV recorded with the CDF II detector at the Fermilab Tevatron. For fully...

Search for chargino-neutralino production in p(p)over-bar collisions at root s=1.96 TeV with high-p(T) leptons (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

We present a search for the associated production of charginos and neutralinos in p (p) over bar collisions at root s = 1.96 TeV. The data were collected at the Collider Detector at Fermilab (CDF II)...

Observation of exclusive dijet production at the Fermilab Tevatron (p)over-bar-p collider (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

We present the first observation and cross section measurement of exclusive dijet production in (p) over barp interactions, (p) over barp -> (p) over bar + dijet + p. Using a data sample of 310...

Observation of orbitally excited B-s mesons (2008)

Aaltonen, T., Abulencia, A., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, Ba, ...

We report the observation of two narrow resonances consistent with states of orbitally excited (L=1) B-s mesons using 1 fb(-1) of p (p) over bar collisions at root s =1.96 TeV collected with the...

Search for resonant t(t)over-bar production in p(p)over-bar collisions at root s=1.96 TeV (2008)

Aaltonen, T., Abulencia, A., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., ...

We report on a search for narrow-width particles decaying to a top and antitop quark pair. The data set used in the analysis corresponds to an integrated luminosity of 680 pb(-1) collected with the...

Measurement of lifetime and decay-width difference in B-S(0)-> J/psi phi decays (2008)

Aaltonen, T., Abulencia, A., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., ...

We measure the mean lifetime tau=2/(Gamma(L)+Gamma(H)) and the decay-width difference Delta Gamma=Gamma(L)-Gamma(H) of the light and heavy mass eigenstates of the B-s(0) meson, B-sL(0) and B-sH(0),...

Search for the Higgs boson in events with missing transverse energy and b quark jets produced in p(p)over-bar collisions at root s=1.96 TeV (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

We search for the standard model Higgs boson produced in association with an electroweak vector boson in events with no identified charged leptons, large imbalance in transverse momentum, and two...

Strong evidence for ZZ production in pp collisions at root s=1.96 TeV (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

We report the first evidence of Z boson pair production at a hadron collider with a significance exceeding 4 standard deviations. This result is based on a data sample corresponding to 1.9 fb(-1) of...

Observation of the decay B-c(+/-) -> J/psi pi(+/-) and measurement of the B-c(+/-) mass (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

The B-c(+/-) meson is observed through the decay B-c(+/-) -> J/psi pi(+/-), in data corresponding to an integrated luminosity of 2.4 fb(-1) recorded by the Collider Detector at Fermilab II detector...

Search for heavy toplike quarks using lepton plus jets events in 1.96 TeV p(p)over-bar collisions (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

We present the results of a search for pair production of a new heavy toplike quark t' decaying to a W boson and another quark using the Collider Detector at Fermilab II detector in run II of the...

Evidence for D-0-(D)over-bar(0) mixing using the CDF II detector (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

We measure the time dependence of the ratio of decay rates for the rare decay D-0 -> K+pi(-) to the Cabibbo-favored decay D-0 -> K-pi(+). A signal of 12.7x10(3) D-0 -> K+pi(-) decays was obtained...

Search for B-s(0)->mu(+)mu(-) and B-0 ->mu(+)mu(-) Decays with 2 fb(-1) of p(p)over-bar Collisions (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

We have performed a search for B-s(0)->mu(+)mu(-) and B-0 ->mu(+)mu(-) decays in p (p) over bar collisions at root s = 1.96 TeV using 2 fb(-1) of integrated luminosity collected by the CDF II...

Measurement of inclusive jet cross sections in Z/gamma*(-> e(+)e(-))+jets production in p(p)over-bar collisions at root s=1.96 TeV (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

Inclusive jet cross sections in Z/gamma* events, with Z/gamma* decaying into an electron-positron pair, are measured as a function of jet transverse momentum and jet multiplicity in p (p) over bar...

First measurement of W boson production in association with a single charm quark in p(p)over-bar collisions at root s=1.96 TeV (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

We present the first measurement of the production cross section of a W boson with a single charm quark (c) in p (p) over bar collisions at root s=1.96 TeV, using soft muon tagging of c jets. In a...

Direct measurement of the W boson width in p(p)over-bar collisions at root s=1.96 TeV (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

A direct measurement of the total decay width of the W boson Gamma(W) is presented using 350 pb(-1) of data from p (p) over bar collisions at root s = 1.96 TeV collected with the CDF II detector at...

Cross-section-constrained top-quark mass measurement from dilepton events at the tevatron (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

We report the first top-quark mass measurement that uses a cross-section constraint to improve the mass determination. This measurement is made with a dilepton t (t) over bar event candidate sample...

First observation of the decay B-s(0)-> Ds-Ds+ and measurement of its branching ratio (2008)

Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M. G., Gonzalez, B. A., Amerio, S., ...

We report the observation of the exclusive decay B-s(0)-> Ds-Ds+ at the 7.5 standard deviation level using 355 pb(-1) of data collected by the CDF II detector in p (p) over bar collisions at root s...

Limits on anomalous triple gauge couplings in p(p)over-bar collisions at sqrt{s}=1.96 TeV (2007)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M. G., ...

8 pages, 3 figures.-- PACS nrs.: 12.15.Ji, 13.40.Em, 14.70.Fm, 14.70.Hp.-- ISI Article Identifier: 000251987200003.-- ArXiv pre-print available at: http://arxiv.org/abs/0705.2247

Precise Measurement of the Top-Quark Mass in the Lepton+Jets Topology at CDF II (2007)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., G. Albrow, M., ...

We present a measurement of the mass of the top quark from proton-antiproton collisions recorded at the CDF experiment in Run II of the Fermilab Tevatron. We analyze events from the single lepton...

Precise Measurement of the Top-Quark Mass in the Lepton+Jets Topology at CDF II (2007)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., G. Albrow, M., ...

We present a measurement of the mass of the top quark from proton-antiproton collisions recorded at the CDF experiment in Run II of the Fermilab Tevatron. We analyze events from the single lepton...

Precise Measurement of the Top-Quark Mass in the Lepton+Jets Topology at CDF II (2007)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., G. Albrow, M., ...

We present a measurement of the mass of the top quark from proton-antiproton collisions recorded at the CDF experiment in Run II of the Fermilab Tevatron. We analyze events from the single lepton...

Search for Chargino-Neutralino Production in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV (2007)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M.G., ...

We present the results of a search for associated production of the chargino and neutralino supersymmetric particles using up to 1.1 fb-1 of integrated lumimosity collected by the CDF II experiment...

Search for Chargino-Neutralino Production in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV (2007)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M.G., ...

We present the results of a search for associated production of the chargino and neutralino supersymmetric particles using up to 1.1 fb-1 of integrated lumimosity collected by the CDF II experiment...

Search for Chargino-Neutralino Production in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV (2007)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M.G., ...

We present the results of a search for associated production of the chargino and neutralino supersymmetric particles using up to 1.1 fb-1 of integrated lumimosity collected by the CDF II experiment...

Observation of the heavy baryons Σ(b) and Σ(b)* (2007)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M. G., ...

7 pages, 2 figures.-- PACS nrs.: 14.20.Mr, 13.30.Eg.-- ISI Article Identifier: 000251003600013.-- ArXiv pre-print available: http://arxiv.org/abs/0706.3868

Precise measurement of the top-quark mass in the Lepton plus Jets topology at CDF II (2007)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M. G., ...

7 pages, 3 figures.-- PACS nrs.: 14.65.Ha, 12.15.Ff, 13.85.Qk.-- ISI Article Identifier :000250644000015.-- ArXiv pre-print available: http://arxiv.org/pdf/hep-ex/0703045

Final results on $\nu\mu\to\nu\tau\nu\mu\to\nu\tau$ oscillation from the CHORUS experiment (2007)

Eskut, E, Kayis-Topaksu, A, Onengüt, G, Van Beuzekom, M G, Van Dantzig, R, De Jong, M, ...

The final oscillation analysis of the complete set of data collected by CHORUS in the years 1994-1997 is presented. Reconstruction algorithms of data extracted by electronic detectors were improved...

Search for new physics in high-mass electron-positron events in p(p)over-bar collisions at sqrt{s}=1.96 TeV (2007)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M. G., ...

7 pages, 4 figures.-- PACS nrs.: 13.85.Rm, 04.50.+h, 13.85.Qk, 14.70.Pw.-- ISI Article Identifier: 000250506000017.-- ArXiv pre-print available at: http://arxiv.org/abs/0707.2524

Search for new particles leading to Z+jets final states in $p\bar{p}$ collisions at $\sqrt{s}$=1.96 TeV (2007)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., G. Albrow, M., ...

We present the results of a search for new particles that lead to a Z boson plus jets in p[overline p] collisions at sqrt(s)=1.96 TeV using the Collider Detector at Fermilab (CDF II). A data sample...

Search for new particles leading to Z+jets final states in $p\bar{p}$ collisions at $\sqrt{s}$=1.96 TeV (2007)

Aaltonen, T., Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., G. Albrow, M., ...

We present the results of a search for new particles that lead to a Z boson plus jets in p[overline p] collisions at sqrt(s)=1.96 TeV using the Collider Detector at Fermilab (CDF II). A data sample...