Search for Z' --> e+ e- using dielectron mass and angular distribution

We search for Z' bosons in dielectron events produced in pp collisions at square root of s = 1.96 TeV, using 0.45 fb(-1) of data accumulated with the Collider Detector at Fermilab II detector at the Fermilab Tevatron. To identify the Z' --> e+ e- signal, both the dielectron invariant ma...

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Veröffentlicht in:	Physical review letters 2006-06, Vol.96 (21), p.211801-211801, Article 211801
Hauptverfasser:	Abulencia, A, Acosta, D, Adelman, J, Affolder, T, Akimoto, T, Albrow, M G, Ambrose, D, Amerio, S, Amidei, D, Anastassov, A, Anikeev, K, Annovi, A, Antos, J, Aoki, M, Apollinari, G, Arguin, J-F, Arisawa, T, Artikov, A, Ashmanskas, W, Attal, A, Azfar, F, Azzi-Bacchetta, P, Azzurri, P, Bacchetta, N, Bachacou, H, Badgett, W, Barbaro-Galtieri, A, Barnes, V E, Barnett, B A, Baroiant, S, Bartsch, V, Bauer, G, Bedeschi, F, Behari, S, Belforte, S, Bellettini, G, Bellinger, J, Belloni, A, Ben Haim, E, Benjamin, D, Beretvas, A, Beringer, J, Berry, T, Bhatti, A, Binkley, M, Bisello, D, Blair, R E, Blocker, C, Blumenfeld, B, Bocci, A, Bodek, A, Boisvert, V, Bolla, G, Bolshov, A, Bortoletto, D, Boudreau, J, Boveia, A, Brau, B, Bromberg, C, Brubaker, E, Budagov, J, Budd, H S, Budd, S, Burkett, K, Busetto, G, Bussey, P, Byrum, K L, Cabrera, S, Campanelli, M, Campbell, M, Canelli, F, Canepa, A, Carlsmith, D, Carosi, R, Carron, S, Casarsa, M, Castro, A, Catastini, P, Cauz, D, Cavalli-Sforza, M, Cerri, A, Cerrito, L, Chang, S H, Chapman, J, Chen, Y C, Chertok, M, Chiarelli, G, Chlachidze, G, Chlebana, F, Cho, I, Cho, K, Chokheli, D, Chou, J P, Chu, P H, Chuang, S H, Chung, K, Chung, W H, Chung, Y S, Ciljak, M, Ciobanu, C I
Format:	Artikel
Sprache:	eng
Schlagworte:	ANGULAR DISTRIBUTION ELECTRON PAIRS ELECTRONS FERMILAB COLLIDER DETECTOR FERMILAB TEVATRON HELICITY INCLUSIVE INTERACTIONS MASS MASS DISTRIBUTION PAIR PRODUCTION PARTICLE DECAY PHYSICS OF ELEMENTARY PARTICLES AND FIELDS POSITRONS PROTON-PROTON INTERACTIONS SIGNALS TEV RANGE 01-10 Z NEUTRAL BOSONS
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Zusammenfassung:	We search for Z' bosons in dielectron events produced in pp collisions at square root of s = 1.96 TeV, using 0.45 fb(-1) of data accumulated with the Collider Detector at Fermilab II detector at the Fermilab Tevatron. To identify the Z' --> e+ e- signal, both the dielectron invariant mass distribution and the angular distribution of the electron pair are used. No evidence of a signal is found, and 95% confidence level lower limits are set on the Z' mass for several models. Limits are also placed on the mass and gauge coupling of a generic Z', as well as on the contact-interaction mass scales for different helicity structure scenarios.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.96.211801