Top-antitop and top-top resonances in the dilepton channel at the CERN LHC

被引：35

作者：

Bai, Yang ^{[1
]}

Han, Zhenyu ^{[2
]}

机构：

[1] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA

[2] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2009年 / 04期

基金：

美国能源部;

关键词：

Phenomenology of Field Theories in Higher Dimensions; BREAKING;

D O I：

10.1088/1126-6708/2009/04/056

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We perform a model-independent study for top-antitop and top-top resonances in the dilepton channel at the Large Hadtron Collider. In this channel, we can solve the kinematic system to obtain the momenta of all particles including the two neutrinos, and hence the resonance mass and spin. For discovering top-antitop resonances, the dilepton channel is competitive to the semileptonic channel because of the good resolution of lepton momentum measurement and small standard model backgrounds. Moreover, the charges of the two leptons can be identified, which makes the dilepton channel advantageous for discovering top-top resonances and for distinguishing resonance spins. We discuss and provide resolutions for difficulties associated with heavy resonances and highly boosted top quarks.

引用

页数：18

共 42 条

[1] CERN LHC signals from warped extra dimensions [J].

Agashe, Kaustubh ;

Belyaev, Alexander ;

Krupovnickas, Tadas ;

Perez, Gilad ;

Virzi, Joseph .

PHYSICAL REVIEW D, 2008, 77 (01)

[2]

ALMEIDA LG, ARXIV08070234

[3] MadGraph/MadEvent v4: the new web generation [J].

Alwall, Johan ;

Demin, Pavel ;

de Visscher, Simon ;

Frederix, Rikkert ;

Herquet, Michel ;

Maltoni, Fabio ;

Plehn, Tilman ;

Rainwaterd, David L. ;

Stelzer, Tim .

JOURNAL OF HIGH ENERGY PHYSICS, 2007, (09)

[4] Review of particle physics [J].

Amsler, C. ;

Doser, M. ;

Antonelli, M. ;

Asner, D. M. ;

Babu, K. S. ;

Baer, H. ;

Band, H. R. ;

Barnett, R. M. ;

Bergren, E. ;

Beringer, J. ;

Bernardi, G. ;

Bertl, W. ;

Bichsel, H. ;

Biebel, O. ;

Bloch, P. ;

Blucher, E. ;

Blusk, S. ;

Cahn, R. N. ;

Carena, M. ;

Caso, C. ;

Cecccci, A. ;

Chakraborty, D. ;

Chen, M. -C. ;

Chivukula, R. S. ;

Cowan, G. ;

Dahl, O. ;

D'Ambrosio, G. ;

Damour, T. ;

de Gouvea, A. ;

DeGrand, T. ;

Dobrescu, B. ;

Drees, M. ;

Edwards, D. A. ;

Eidelman, S. ;

Elvira, V. D. ;

Erler, J. ;

Ezhela, V. V. ;

Feng, J. L. ;

Fetscher, W. ;

Fields, B. D. ;

Foster, B. ;

Gaisser, T. K. ;

Garren, L. ;

Gerber, H. -J. ;

Gerbier, G. ;

Gherghetta, T. ;

Giudice, G. F. ;

Goodman, M. ;

Grab, C. ;

Gritsan, A. V. .

PHYSICS LETTERS B, 2008, 667 (1-5) :1-+

[5]

[Anonymous], HEPPH0003033

[6] Top quark spin correlations in the Randall-Sundrum model at the CERN Large Hadron Collider [J].

Arai, Masato ;

Okada, Nobuchika ;

Smolek, Karel ;

Simak, Vladislav .

PHYSICAL REVIEW D, 2007, 75 (09)

[7] Electroweak symmetry breaking from dimensional deconstruction [J].

Arkani-Hamed, N ;

Cohen, AG ;

Georgi, H .

PHYSICS LETTERS B, 2001, 513 (1-2) :232-240

[8]

BAI Y, ARXIV08091658

[9] Collider signals of maximal flavor violation: Same-sign leptons from same-sign top quarks at the Fermilab Tevatron [J].

Bar-Shalom, Shaouly ;

Rajaraman, Arvind ;

Whiteson, Daniel ;

Yu, Felix .

PHYSICAL REVIEW D, 2008, 78 (03)

[10] Top-quark pairs at high invariant mass: A model-independent discriminator of new physics at the Large Hadron Collider [J].

Barger, Vernon ;

Han, Tao ;

Walker, Devin G. E. .

PHYSICAL REVIEW LETTERS, 2008, 100 (03)

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