Search for Z′ → e+ e- using dielectron mass and angular distribution

被引：60

作者：

Abulencia, A. ^{[1
]}

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.

机构：

[1] Univ Illinois, Urbana, IL 61801 USA

[2] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[3] Argonne Natl Lab, Argonne, IL 60439 USA

[4] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Bellaterra, Barcelona, Spain

[5] Baylor Univ, Waco, TX 76798 USA

[6] Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy

[7] Brandeis Univ, Waltham, MA 02254 USA

[8] Univ Calif Davis, Davis, CA 95616 USA

[9] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

[10] Univ Calif San Diego, La Jolla, CA 92093 USA

[11] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[12] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain

[13] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[14] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[15] Joint Nucl Res Inst, RU-141980 Dubna, Russia

[16] Duke Univ, Durham, NC 27708 USA

[17] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[18] Univ Florida, Gainesville, FL 32611 USA

[19] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[20] Univ Geneva, CH-1211 Geneva 4, Switzerland

[21] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland

[22] Harvard Univ, Cambridge, MA 02138 USA

[23] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland

[24] Helsinki Inst Phys, FIN-00014 Helsinki, Finland

[25] Johns Hopkins Univ, Baltimore, MD 21218 USA

[26] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany

[27] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, Japan

[28] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea

[29] Seoul Natl Univ, Seoul 151742, South Korea

[30] Sungkyunkwan Univ, Suwon 440746, South Korea

[31] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[32] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[33] UCL, London WC1E 6BT, England

[34] CIEMAT, E-28040 Madrid, Spain

[35] MIT, Cambridge, MA 02139 USA

[36] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada

[37] Univ Toronto, Toronto, ON M5S 1A7, Canada

[38] Univ Michigan, Ann Arbor, MI 48109 USA

[39] Michigan State Univ, E Lansing, MI 48824 USA

[40] Inst Theoret & Expt Phys, Moscow 117259, Russia

[41] Univ New Mexico, Albuquerque, NM 87131 USA

[42] Northwestern Univ, Evanston, IL 60208 USA

[43] Ohio State Univ, Columbus, OH 43210 USA

[44] Okayama Univ, Okayama 7008530, Japan

[45] Osaka City Univ, Osaka 588, Japan

[46] Univ Oxford, Oxford OX1 3RH, England

[47] Univ Padua, Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy

[48] Univ Paris 06, LPNHE, CNRS, IN2P3,UMR7585, F-75005 Paris, France

[49] Univ Penn, Philadelphia, PA 19104 USA

[50] Univ Pisa, Ist Nazl Fis Nucl, I-56127 Pisa, Italy

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 21期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevLett.96.211801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We search for Z(') bosons in dielectron events produced in p (p) over bar collisions at root 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.

引用

页数：7

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