L. de Barbaro

Airbus (France)

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M. Vakili

Iran University of Science and Technology

Robert Bernstein

Fermi National Accelerator Laboratory

K. S. McFarland

University of Rochester

A. Bodek

University of Rochester

A. Romosan

Lawrence Berkeley National Laboratory

J. M. Conrad

Massachusetts Institute of Technology

E. G. Stern

Fermi National Accelerator Laboratory

W. Marsh

Fermi National Accelerator Laboratory

P. Spentzouris

Fermi National Accelerator Laboratory

D. Naples

University of Pittsburgh

Cooperative Institutions

Fermi National Accelerator Laboratory

Columbia University

University of Rochester

European Organization for Nuclear Research

Institute of High Energy Physics

Centre National de la Recherche Scientifique

Kansas State University

Argonne National Laboratory

A. Alikhanyan National Laboratory

University of Chicago

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Search for a33.9MeV/c2Neutral Particle in Pion Decay

Physical Review Letters (2000)

J. A. Formaggio E. D. Zimmerman T. Adams A. Alton S. Avvakumov

The E815 (NuTeV) neutrino experiment has performed a search for a 33. 9 MeV/c(2) weakly interacting neutral particle produced in pion decay. Such a particle may be responsible for an anomaly in the timing distribution of neutrino interactions in the KARMEN experiment. E815 has searched for this particle's decays in an instrumented decay region; no evidence for this particle was found. The search is sensitive to pion branching ratios as low as 10(-13).

10.1103/physrevlett.84.4043

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Citations (7)

Recent Structure Function Results from CCFR

B. T. Fleming C. G. Arroyo W. Seligman M.H. Shaevitz A. Romosan

Source

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Citations (0)

Reply to the Comment on "A Precise Determination of Electroweak Parameters in Neutrino-Nucleon Scattering"

arXiv (Cornell University) (2002)

G. P. Zeller N. Suwonjandee M.H. Shaevitz A. Romosan J. Goldman

In a recent comment, Miller and Thomas assert that differences in nuclear shadowing effects between neutrino neutral current (NC) and charged current (CC) interactions could explain the difference between NuTeV's measurement of the weak mixing angle and the prediction from other electroweak data. We argue that the proposed effect could have only a small impact on sin2thetaW derived from the Paschos-Wolfenstein R- and that such an effect is strongly disfavored by the neutrino and anti-neutrino NC-to-CC cross-section ratios also measured by NuTeV.

Neutral current

Weinberg angle

Charged current

10.48550/arxiv.hep-ex/0207052

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Citations (1)

Parton Distributions Working Group

arXiv (Cornell University) (2000)

L. de Barbaro Spencer Keller S. E. Kuhlmann H. Schellman W.-K. Tung

The main focus of this working group was to investigate the different issues associated with the development of quantitative tools to estimate parton distribution functions uncertainties. In the conclusion, we introduce a "Manifesto" that describes an optimal method for reporting data.

Manifesto

10.48550/arxiv.hep-ph/0006300

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Citations (2)

High Statistics Search forνμ(ν¯μ)→<…

Physical Review Letters (1997)

A. Romosan C. G. Arroyo L. de Barbaro P. de Barbaro A. O. Bazarko

Limits on $\nu_\mu (\overline{\nu}_\mu) \to \nu_e (\overline{\nu}_e)$ oscillations based on a statistical separation of $\nu_e N$ charged current interactions in the CCFR detector at Fermilab are presented. $\nu_e$ interactions are identified by the difference in the longitudinal shower energy deposition pattern of $\nu_e N \rightarrow eX$ versus $\nu_\mu N \to \nu_\mu X$ interactions. Neutrino energies range from 30 to 600 GeV with a mean of 140 GeV, and $\nu_\mu$ flight lengths vary from 0.9 km to 1.4 km. The lowest 90% confidence upper limit in $sin^2 2\alpha$ of $1.1 \times 10^{-3}$ is obtained at $\Delta m^2 \sim 300 eV^2$. For $sin^2 2\alpha = 1$, $\Delta m^2 > 1.6 eV^2$ is excluded, and for $\Delta m^2 \gg 1000 eV^2$, $sin^2 2\alpha > 1.8 \times 10^{-3}$ is excluded. This result is the most stringent limit to date for $\Delta m^2 > 25 eV^2$ and it excludes the high $\Delta m^2$ oscillation region favoured by the LSND experiment. The $\nu_\mu$-to-$\nu_e$ cross-section ratio was measured as a test of $\nu_\mu (\bar\nu_\mu) \leftrightarrow \nu_e (\bar\nu_e)$ universality to be $1.026 \pm 0.055$.

10.1103/physrevlett.78.2912

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Citations (72)

Measurement of the Nucleon Strange-Antistrange Asymmetry at Next-to-Leading Order in QCD from NuTeV Dimuon Data

Physical Review Letters (2007)

D. Mason J. Brau R. B. Drucker R. Frey P. Spentzouris

We present a new measurement of the difference between the nucleon strange and antistrange quark distributions from dimuon events recorded by the NuTeV experiment at Fermilab. This analysis is the first to use a complete next to leading order QCD description of charm production from neutrino scattering. Dimuon events in neutrino deep inelastic scattering allow direct and independent study of the strange and antistrange content of the nucleon. We find a positive strange asymmetry with a significance of 1.6sigma. We also report a new measurement of the charm mass.

Strange quark

Fermilab

Charm (quantum number)

Charm quark

10.1103/physrevlett.99.192001

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Citations (113)

Strange Content of the Nucleon (NuTeV)

arXiv (Cornell University) (1999)

T. Adams A. Alton S. Avvakumov L. de Barbaro P. de Barbaro

The NuTeV experiment uses neutrino deep-inelastic scattering from separate neutrino and anti-neutrino beams to study the structure of the nucleon. Charged-current production of charm is sensitive to the strange content of the nucleon while neutral-current charm production probes the charm content. Preliminary analyses of both topics are presented along with discussion of possible momentum asymmetry in the strange sea.

Charm (quantum number)

Content (measure theory)

Strange quark

Charged current

10.48550/arxiv.hep-ex/9906038

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Citations (4)

Measurements ofF2andxF3ν

Physical Review Letters (2001)

U. K. Yang T. Adams A. Alton C. G. Arroyo S. Avvakumov

We report on the extraction of the structure functions F2 and DeltaxF(3) = xF(nu)(3)-xF(nu;)(3) from CCFR nu(mu)-Fe and nu;(mu)-Fe differential cross sections. The extraction is performed in a physics model-independent (PMI) way. This first measurement of DeltaxF(3), which is useful in testing models of heavy charm production, is higher than current theoretical predictions. The ratio of the F2 (PMI) values measured in nu(mu) and mu scattering is in agreement (within 5%) with the predictions of next-to-leading-order parton distribution functions using massive charm production schemes, thus resolving the long-standing discrepancy between the two sets of data.

Charm (quantum number)

10.1103/physrevlett.86.2742

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Citations (101)

Measurement of sin^2 theta_W in nu N Scattering from NuTeV

arXiv (Cornell University) (1999)

NuTeV Collaboration Rob Johnson T. Adams A. Alton S. Avvakumov

We report the measurement of sin^2 theta_W in nu N deep inelastic scattering from the NuTeV experiment. By using separate neutrino and anti-neutrino beams, NuTeV is able to determine sin^2 theta_W with smaller systematic and similar or smaller statistical errors when compared to previous neutrino experiments. NuTeV measures sin^2 theta_W (on-shell) = 0.2253 +/- 0.0019(stat.) +/- 0.0010(sys.), which implies M_W = 80.26 +/- 0.11 GeV/c^2.

10.48550/arxiv.hep-ex/9904028

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Citations (1)

Production ofπ0andηmesons at large transverse momenta inppand Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (2003)

L. Apanasevich J. Bacigalupi W. Baker M. Begel S. Blusk

We present measurements of the production of high transverse momentum ${\ensuremath{\pi}}^{0}$ and $\ensuremath{\eta}$ mesons in $\mathrm{pp}$ and $p\mathrm{Be}$ interactions at 530 and $800\mathrm{GeV}/c.$ The data span the kinematic ranges: $1<{p}_{T}<10\mathrm{GeV}/c$ in transverse momentum and 1.5 units in rapidity. The inclusive ${\ensuremath{\pi}}^{0}$ cross sections are compared with next-to-leading order QCD calculations and to expectations based on a phenomenological parton-${k}_{T}$ model.

10.1103/physrevd.68.052001

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Citations (32)