Search for excited electrons in ep collisions at HERA
2008
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A search for excited electrons is performed using the full e(+/-) p data sample collected by the HI experiment at HERA, corresponding to a total luminosity of 475 pb(-1). The electroweak decays of excited electrons e* - GT e gamma, e* - GT eZ and e* - GT vW with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for excited electron production is found. Mass dependent exclusion limits on e* production cross sections and on the ratio f/Lambda of the coupling to the compositeness scale are derived within gauge mediated models. These limits extend the excluded region compared to previous excited electron searches. The e* production via contact interactions is also addressed for the first time in ep collisions. (C) 2008 Elsevier B.V. All rights reserved.
Извор:
Physics Letters B, 2008, 666, 2, 131-139
DOI: 10.1016/j.physletb.2008.07.014
ISSN: 0370-2693
WoS: 000258907600005
Scopus: 2-s2.0-50949094955
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VinčaTY - JOUR AU - Aaron, F. D. AU - Božović-Jelisavčić, Ivanka AU - Mudrinić, Mihajlo AU - Pandurović, Mila AU - Smijanic, I. PY - 2008 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3516 AB - A search for excited electrons is performed using the full e(+/-) p data sample collected by the HI experiment at HERA, corresponding to a total luminosity of 475 pb(-1). The electroweak decays of excited electrons e* - GT e gamma, e* - GT eZ and e* - GT vW with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for excited electron production is found. Mass dependent exclusion limits on e* production cross sections and on the ratio f/Lambda of the coupling to the compositeness scale are derived within gauge mediated models. These limits extend the excluded region compared to previous excited electron searches. The e* production via contact interactions is also addressed for the first time in ep collisions. (C) 2008 Elsevier B.V. All rights reserved. T2 - Physics Letters B T1 - Search for excited electrons in ep collisions at HERA VL - 666 IS - 2 SP - 131 EP - 139 DO - 10.1016/j.physletb.2008.07.014 ER -
@article{ author = "Aaron, F. D. and Božović-Jelisavčić, Ivanka and Mudrinić, Mihajlo and Pandurović, Mila and Smijanic, I.", year = "2008", abstract = "A search for excited electrons is performed using the full e(+/-) p data sample collected by the HI experiment at HERA, corresponding to a total luminosity of 475 pb(-1). The electroweak decays of excited electrons e* - GT e gamma, e* - GT eZ and e* - GT vW with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for excited electron production is found. Mass dependent exclusion limits on e* production cross sections and on the ratio f/Lambda of the coupling to the compositeness scale are derived within gauge mediated models. These limits extend the excluded region compared to previous excited electron searches. The e* production via contact interactions is also addressed for the first time in ep collisions. (C) 2008 Elsevier B.V. All rights reserved.", journal = "Physics Letters B", title = "Search for excited electrons in ep collisions at HERA", volume = "666", number = "2", pages = "131-139", doi = "10.1016/j.physletb.2008.07.014" }
Aaron, F. D., Božović-Jelisavčić, I., Mudrinić, M., Pandurović, M.,& Smijanic, I.. (2008). Search for excited electrons in ep collisions at HERA. in Physics Letters B, 666(2), 131-139. https://doi.org/10.1016/j.physletb.2008.07.014
Aaron FD, Božović-Jelisavčić I, Mudrinić M, Pandurović M, Smijanic I. Search for excited electrons in ep collisions at HERA. in Physics Letters B. 2008;666(2):131-139. doi:10.1016/j.physletb.2008.07.014 .
Aaron, F. D., Božović-Jelisavčić, Ivanka, Mudrinić, Mihajlo, Pandurović, Mila, Smijanic, I., "Search for excited electrons in ep collisions at HERA" in Physics Letters B, 666, no. 2 (2008):131-139, https://doi.org/10.1016/j.physletb.2008.07.014 . .