### Abstract

There is a strong belief among physicists that neutral weak currents are a mixture of vector and axial vector currents. Nevertheless there is no experiment which can exclude scalar, pseudoscalar and tensor coupling. In this paper we discuss the most general form of neutrino scattering on a hadronic target via a neutral current. Comparison between SPT and VA cross sections leads to an even stronger version of the so-called confusion theorem, which states that any y distribution possible for a VA cross section can be simulated by SPT coupling. Even positivity constraints on the hadron tensor are not strong enough to exclude SPT coupling, if the measurements are compatible with a VA theory.

Original language | English (US) |
---|---|

Pages (from-to) | 505-525 |

Number of pages | 21 |

Journal | Nuclear Physics, Section B |

Volume | 153 |

Issue number | 1 |

State | Published - 1979 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Cite this

**On the space-time structure of the neutral weak current. A generalized version of the confusion theorem.** / Lackner, Klaus.

Research output: Contribution to journal › Article

*Nuclear Physics, Section B*, vol. 153, no. 1, pp. 505-525.

}

TY - JOUR

T1 - On the space-time structure of the neutral weak current. A generalized version of the confusion theorem

AU - Lackner, Klaus

PY - 1979

Y1 - 1979

N2 - There is a strong belief among physicists that neutral weak currents are a mixture of vector and axial vector currents. Nevertheless there is no experiment which can exclude scalar, pseudoscalar and tensor coupling. In this paper we discuss the most general form of neutrino scattering on a hadronic target via a neutral current. Comparison between SPT and VA cross sections leads to an even stronger version of the so-called confusion theorem, which states that any y distribution possible for a VA cross section can be simulated by SPT coupling. Even positivity constraints on the hadron tensor are not strong enough to exclude SPT coupling, if the measurements are compatible with a VA theory.

AB - There is a strong belief among physicists that neutral weak currents are a mixture of vector and axial vector currents. Nevertheless there is no experiment which can exclude scalar, pseudoscalar and tensor coupling. In this paper we discuss the most general form of neutrino scattering on a hadronic target via a neutral current. Comparison between SPT and VA cross sections leads to an even stronger version of the so-called confusion theorem, which states that any y distribution possible for a VA cross section can be simulated by SPT coupling. Even positivity constraints on the hadron tensor are not strong enough to exclude SPT coupling, if the measurements are compatible with a VA theory.

UR - http://www.scopus.com/inward/record.url?scp=49249150196&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=49249150196&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:49249150196

VL - 153

SP - 505

EP - 525

JO - Nuclear Physics B

JF - Nuclear Physics B

SN - 0550-3213

IS - 1

ER -