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8 results on '"DelCorso, J."'

1. Measurement of the vector analyzing power in elastic electron-proton scattering as a probe of double photon exchange amplitudes

Author

Wells, S. P., Averett, T., Barkhuff, D., Beck, D. H., Beise, E. J., Benson, C., Breuer, H., Carr, R., Covrig, S., DelCorso, J., Dodson, G., Eppstein, C., Farkhondeh, M., Filippone, B. W., Forest, T., Frasier, P., Hasty, R., Ito, T. M., Jones, C., Korsch, W., Kowalski, S., Lee, P., Maneva, E., McCarty, K., McKeown, R. D., Mikell, J., Mueller, B., Naik, P., Pitt, M. L., Ritter, J., Savu, V., Spayde, D. T., Sullivan, M., Tieulent, R., Tsentalovich, E., Yang, B., and Zwart, T.

Subjects
Nuclear Experiment
Abstract

We report the first measurement of the vector analyzing power in inclusive transversely polarized elastic electron-proton scattering at Q^2 = 0.1 (GeV/c)^2 and large scattering angles. This quantity should vanish in the single virtual photon exchange, plane wave impulse approximation for this reaction, and can therefore provide information on double photon exchange amplitudes for electromagnetic interactions with hadronic systems. We find a non-zero value of A=-15.4+/-5.4 ppm. No calculations of this observable for nuclei other than spin 0 have been carried out in these kinematics, and the calculation using the spin orbit interaction from a charged point nucleus of spin 0 cannot describe these data., Comment: 4 pages, 2 figures, submitted to Phys. Rev. Lett

Published
2000
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2. Measurement of the vector analyzing power in elastic electron-proton scattering as a probe of double photon exchange amplitudes

Author

Wells, S.P., Wells, S.P., Averett, T., Barkhuff, D., Beck, D.H., Beise, E.J., Benson, C., Breuer, H., Carr, R., Covrig, S., DelCorso, J., Dodson, G., Eppstein, C., Farkhondeh, M., Filippone, B.W., Forest, T., Frasier, P., Hasty, R., Ito, T.M., Jones, C., Korsch, W., Kowalski, S., Lee, P., Maneva, E., McCarty, K., McKeown, R.D., Mikell, J., Mueller, B., Naik, P., Pitt, M.L, Ritter, J., Savu, V., Spayde, D.T., Sullivan, M., Tieulent, R., Tsentalovich, E., Yang, B., Zwart, T., SAMPLE Collaboration, Wells, S.P., Wells, S.P., Averett, T., Barkhuff, D., Beck, D.H., Beise, E.J., Benson, C., Breuer, H., Carr, R., Covrig, S., DelCorso, J., Dodson, G., Eppstein, C., Farkhondeh, M., Filippone, B.W., Forest, T., Frasier, P., Hasty, R., Ito, T.M., Jones, C., Korsch, W., Kowalski, S., Lee, P., Maneva, E., McCarty, K., McKeown, R.D., Mikell, J., Mueller, B., Naik, P., Pitt, M.L, Ritter, J., Savu, V., Spayde, D.T., Sullivan, M., Tieulent, R., Tsentalovich, E., Yang, B., Zwart, T., and SAMPLE Collaboration

Abstract

We report the first measurement of the vector analyzing power in inclusive transversely polarized elastic electron-proton scattering at Q2 = 0.1 (GeV/c)2 and large scattering angles. This quantity should vanish in the single virtual photon exchange, plane wave impulse approximation for this reaction, and can therefore provide information on double photon exchange amplitudes for electro- magnetic interactions with hadronic systems. We find a non-zero value of A=-15.4±5.4 ppm. No calculations of this observable for nuclei other than spin 0 have been carried out in these kinematics, and the calculation using the spin orbit interaction from a charged point nucleus of spin 0 cannot describe these data.

Published
2001

3. Parity Violation in Elastic Electron-Proton Scattering and the Proton's Strange Magnetic Form Factor

Author

Spayde, D. T., Averett, T., Barkhuff, D., Beck, D. H., Beise, E. J., Benson, C., Breuer, H., Carr, R., Covrig, S., DelCorso, J., Dodson, G., Dow, K., Eppstein, C., Farkhondeh, M., Filippone, B. W., Frazier, P., Hasty, R., Ito, T. M., Jones, C. E., Korsch, W., Kowalski, S., Lee, P., Maneva, E., McCarty, K., McKeown, R. D., Mikell, J., Mueller, B., Naik, P., Pitt, M., Ritter, J., Savu, V., Sullivan, M., Tieulent, R., Tsentalovich, E., Wells, S. P., Yang, B., Zwart, T., Spayde, D. T., Averett, T., Barkhuff, D., Beck, D. H., Beise, E. J., Benson, C., Breuer, H., Carr, R., Covrig, S., DelCorso, J., Dodson, G., Dow, K., Eppstein, C., Farkhondeh, M., Filippone, B. W., Frazier, P., Hasty, R., Ito, T. M., Jones, C. E., Korsch, W., Kowalski, S., Lee, P., Maneva, E., McCarty, K., McKeown, R. D., Mikell, J., Mueller, B., Naik, P., Pitt, M., Ritter, J., Savu, V., Sullivan, M., Tieulent, R., Tsentalovich, E., Wells, S. P., Yang, B., and Zwart, T.

Abstract

We report a new measurement of the parity-violating asymmetry in elastic electron scattering from the proton at backward scattering angles. This asymmetry is sensitive to the strange magnetic form factor of the proton as well as electroweak axial radiative corrections. The new measurement of A = -4.92±0.61±0.73 ppm provides a significant constraint on these quantities. The implications for the strange magnetic form factor are discussed in the context of theoretical estimates for the axial corrections.

Published
2000

4. Parity Violation in Elastic Electron-Proton Scattering and the Proton's Strange Magnetic Form Factor

Author

Spayde, D.T., Spayde, D.T., Averett, T., Barkhuff, D., Beck, D.H., Beise, E.J., Benson, C., Breuer, H., Carr, R., Covrig, S., DelCorso, J., Dodson, G., Dow, K., Eppstein, C., Farkhondeh, M., Filippone, B.W., Frazier, P., Hasty, R., Ito, T.M., Jones, C.E., Korsch, W., Kowalski, S., Lee, P., Maneva, E., McCarty, K., McKeown, R.D., Mikell, J., Mueller, B., Naik, P., Pitt, M., Ritter, J., Savu, V., Sullivan, M., Tieulent, R., Tsentalovich, E., Wells, S.P., Yang, B., Zwart, T., SAMPLE Collaboration, Spayde, D.T., Spayde, D.T., Averett, T., Barkhuff, D., Beck, D.H., Beise, E.J., Benson, C., Breuer, H., Carr, R., Covrig, S., DelCorso, J., Dodson, G., Dow, K., Eppstein, C., Farkhondeh, M., Filippone, B.W., Frazier, P., Hasty, R., Ito, T.M., Jones, C.E., Korsch, W., Kowalski, S., Lee, P., Maneva, E., McCarty, K., McKeown, R.D., Mikell, J., Mueller, B., Naik, P., Pitt, M., Ritter, J., Savu, V., Sullivan, M., Tieulent, R., Tsentalovich, E., Wells, S.P., Yang, B., Zwart, T., and SAMPLE Collaboration

Abstract

We report a new measurement of the parity-violating asymmetry in elastic electron scattering from the proton at backward scattering angles. This asymmetry is sensitive to the strange magnetic form factor of the proton as well as electroweak axial radiative corrections. The new measurement of A = -4.92±0.61±0.73ppm provides a significant constraint on these quantities. The implications for the strange magnetic form factor are discussed in the context of theoretical estimates for the axial corrections.

Published
2000

5. Measurement of the vector analyzing power in elastic electron-proton scattering as a probe of the double virtual Compton amplitude

Author

Wells, S. P., primary, Averett, T., additional, Barkhuff, D., additional, Beck, D. H., additional, Beise, E. J., additional, Benson, C., additional, Breuer, H., additional, Carr, R., additional, Covrig, S., additional, DelCorso, J., additional, Dodson, G., additional, Eppstein, C., additional, Farkhondeh, M., additional, Filippone, B. W., additional, Forest, T. A., additional, Frasier, P., additional, Hasty, R., additional, Ito, T. M., additional, Jones, C., additional, Korsch, W., additional, Kowalski, S., additional, Lee, P., additional, Maneva, E., additional, McCarty, K., additional, McKeown, R. D., additional, Mikell, J., additional, Mueller, B., additional, Naik, P., additional, Pitt, M. L., additional, Ritter, J., additional, Savu, V., additional, Spayde, D. T., additional, Sullivan, M., additional, Tieulent, R., additional, Tsentalovich, E., additional, Yang, B., additional, and Zwart, T., additional

Published
2001
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6. Parity Violation in Elastic Electron-Proton Scattering and the Proton's Strange Magnetic Form Factor

Author

Spayde, D. T., primary, Averett, T., additional, Barkhuff, D., additional, Beck, D. H., additional, Beise, E. J., additional, Benson, C., additional, Breuer, H., additional, Carr, R., additional, Covrig, S., additional, DelCorso, J., additional, Dodson, G., additional, Dow, K., additional, Eppstein, C., additional, Farkhondeh, M., additional, Filippone, B. W., additional, Frazier, P., additional, Hasty, R., additional, Ito, T. M., additional, Jones, C. E., additional, Korsch, W., additional, Kowalski, S., additional, Lee, P., additional, Maneva, E., additional, McCarty, K., additional, McKeown, R. D., additional, Mikell, J., additional, Mueller, B., additional, Naik, P., additional, Pitt, M., additional, Ritter, J., additional, Savu, V., additional, Sullivan, M., additional, Tieulent, R., additional, Tsentalovich, E., additional, Wells, S. P., additional, Yang, B., additional, and Zwart, T., additional

Published
2000
Full Text
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7. Measurement of the vector analyzing power in elastic electron-proton scattering as a probe of the double virtual Compton amplitude

Author

Wells, S. P., Averett, T., Barkhuff, D., Beck, D. H., Beise, E. J., Benson, C., Breuer, H., Carr, R., Covrig, S., Delcorso, J., Dodson, G., Eppstein, C., Farkhondeh, M., Filippone, B. W., Forest, T. A., Frasier, P., Hasty, R., Ito, T. M., Jones, C., Korsch, W., Kowalski, S., Lee, P., Maneva, E., Mccarty, K., Mckeown, R. D., Mikell, J., Mueller, B., Naik, P., Pitt, M. L., Ritter, J., Savu, V., Spayde, D. T., Sullivan, M., Raphael Tieulent, Tsentalovich, E., Yang, B., and Zwart, T.

Subjects
POLARIZATION, PARITY VIOLATION, Nuclear Experiment, MAGNETIC FORM-FACTOR
Abstract

We report the first measurement of the vector analyzing power in inclusive transversely polarized elastic electron- proton scattering at Q(2) = 0.1 (GeV/c)(2) and large scattering angles. This quantity must vanish in the single virtual photon exchange, plane-wave impulse approximation for this reaction, and can therefore provide information on two photon exchange amplitudes for electromagnetic interactions with hadronic systems. The observable we have measured is driven by the imaginary part of the two photon exchange amplitude, the hadronic side of which is simply the Compton amplitude for the proton with two virtual photons. We find a small but nonzero value of A = -15.4 +/- 5.4 ppm.

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