Journal article

A search for excited fermions in e+p collisions at HERA

Abstract:: Using the ZEUS detector at HERA, we have searched for heavy excited states of electrons, neutrinos, and quarks in e+p collisions at a center-of-mass energy of 300 GeV. With an integrated luminosity of 9.4 pb-1, no evidence was found for electroweak production and decay of such states. Limits on the production cross section times branching ratio and on the characteristic couplings, f/Λ, are derived for masses up to 250 GeV. For the particular choice f/Λ = 1/Mf*, we exclude at the 95% confidence level excited electrons with mass between 30 and 200 GeV, excited electron neutrinos with mass between 40 and 96 GeV, and quarks excited electroweakly with mass between 40 and 169 GeV. © Springer-Verlag 1997.

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APA Style

Breitweg, J., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R., Yoshida, R., Zhang, H., Mattingly, M., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., … Contin, A. (1997). A search for excited fermions in e+p collisions at HERA. Zeitschrift Fur Physik C-Particles and Fields, 76(4), 631–646.

MLA Style

Breitweg, J., et al. “A Search for Excited Fermions in e+p Collisions at HERA.” Zeitschrift Fur Physik C-Particles and Fields, vol. 76, no. 4, 1997, pp. 631–46.

Chicago Style

Breitweg, J, M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave, J Repond, et al. 1997. “A Search for Excited Fermions in e+p Collisions at HERA.” Zeitschrift Fur Physik C-Particles and Fields 76 (4): 631–46.
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+ Breitweg, J More by this author

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+ Derrick, M More by this author

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+ Krakauer, D More by this author

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+ Magill, S More by this author

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+ Mikunas, D More by this author

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Journal:: Zeitschrift fur Physik C-Particles and Fields More from this journal
Volume:: 76
Issue:: 4
Pages:: 631-646
Publication date:: 1997-12-01
ISSN:: 0170-9739

Language:: English
Pubs id:: pubs:345229
UUID:: uuid:45ac3f13-a3fc-40a7-8633-31a9bd7d8af1
Local pid:: pubs:345229
Source identifiers:: 345229
Deposit date:: 2012-12-19

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Copyright date:: 1997

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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