A search for new quarks and leptons from Z0 decay at LEP

Physics

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https://doi.org/10.1016/0370-2693(90)90392-J
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A search for new quarks and leptons from Z0 decay at LEP. / Decamp, D.; Finch, Alexander.
In: Physics Letters B, Vol. 236, No. 4, 1990, p. 511-522.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Decamp, D & Finch, A 1990, 'A search for new quarks and leptons from Z0 decay at LEP', Physics Letters B, vol. 236, no. 4, pp. 511-522. https://doi.org/10.1016/0370-2693(90)90392-J

APA

Decamp, D., & Finch, A. (1990). A search for new quarks and leptons from Z0 decay at LEP. Physics Letters B, 236(4), 511-522. https://doi.org/10.1016/0370-2693(90)90392-J

Vancouver

Decamp D, Finch A. A search for new quarks and leptons from Z0 decay at LEP. Physics Letters B. 1990;236(4):511-522. doi: 10.1016/0370-2693(90)90392-J

Author

Decamp, D. ; Finch, Alexander. / A search for new quarks and leptons from Z0 decay at LEP. In: Physics Letters B. 1990 ; Vol. 236, No. 4. pp. 511-522.

Bibtex

@article{d7941fe9bee84550944377d9d323504d,

title = "A search for new quarks and leptons from Z0 decay at LEP",

abstract = "A search for Z0 decays into pairs of possible new heavy quarks (t and b′), new heavy charged leptons (L±), stable heavy neutral leptons (νL) and unstable heavy neutral leptons (L0) is performed on data collected by the ALEPH detector corresponding to 11 550 events of Z0→hadrons. The limits on the masses of the heavy quarks are Mt > 45.8 GeV and Mb′ > 46.0 GeV, allowing for both charged-current and flavor-changing neutral-current decays of the b′. If an L± decays into a stable νL, then for MνL<42.7 GeV, the mass of L± is excluded for all values of ML± > MνL. Finally, while the mass of the stable νL is excluded up to 42.7 GeV, the mass of the unstable L0 is excluded up to 45.7 GeV with the mixing parameters |UℓL0|2 down to 10−13 at this mass. For 25.0 GeV < ML0 < 42.7 GeV, all values of |UℓL0|2 are excluded. All limits are given at 95% CL.",

author = "D. Decamp and Alexander Finch",

year = "1990",

doi = "10.1016/0370-2693(90)90392-J",

language = "English",

volume = "236",

pages = "511--522",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "ELSEVIER SCIENCE BV",

number = "4",

}

RIS

TY - JOUR

T1 - A search for new quarks and leptons from Z0 decay at LEP

AU - Decamp, D.

AU - Finch, Alexander

PY - 1990

Y1 - 1990

N2 - A search for Z0 decays into pairs of possible new heavy quarks (t and b′), new heavy charged leptons (L±), stable heavy neutral leptons (νL) and unstable heavy neutral leptons (L0) is performed on data collected by the ALEPH detector corresponding to 11 550 events of Z0→hadrons. The limits on the masses of the heavy quarks are Mt > 45.8 GeV and Mb′ > 46.0 GeV, allowing for both charged-current and flavor-changing neutral-current decays of the b′. If an L± decays into a stable νL, then for MνL<42.7 GeV, the mass of L± is excluded for all values of ML± > MνL. Finally, while the mass of the stable νL is excluded up to 42.7 GeV, the mass of the unstable L0 is excluded up to 45.7 GeV with the mixing parameters |UℓL0|2 down to 10−13 at this mass. For 25.0 GeV < ML0 < 42.7 GeV, all values of |UℓL0|2 are excluded. All limits are given at 95% CL.

AB - A search for Z0 decays into pairs of possible new heavy quarks (t and b′), new heavy charged leptons (L±), stable heavy neutral leptons (νL) and unstable heavy neutral leptons (L0) is performed on data collected by the ALEPH detector corresponding to 11 550 events of Z0→hadrons. The limits on the masses of the heavy quarks are Mt > 45.8 GeV and Mb′ > 46.0 GeV, allowing for both charged-current and flavor-changing neutral-current decays of the b′. If an L± decays into a stable νL, then for MνL<42.7 GeV, the mass of L± is excluded for all values of ML± > MνL. Finally, while the mass of the stable νL is excluded up to 42.7 GeV, the mass of the unstable L0 is excluded up to 45.7 GeV with the mixing parameters |UℓL0|2 down to 10−13 at this mass. For 25.0 GeV < ML0 < 42.7 GeV, all values of |UℓL0|2 are excluded. All limits are given at 95% CL.

U2 - 10.1016/0370-2693(90)90392-J

DO - 10.1016/0370-2693(90)90392-J

M3 - Journal article

VL - 236

SP - 511

EP - 522

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 4

ER -

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