Asymmetries in t(t)over-bar production: LHC versus Tevatron

被引：54

作者：

Aguilar-Saavedra, J. A. ^{[1
]}

Perez-Victoria, M.

机构：

[1] Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 11期

关键词：

TOP-QUARK;

D O I：

10.1103/PhysRevD.84.115013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The measurement of a charge asymmetry in t (t) over bar production at the LHC constitutes more than an independent confirmation of the forward-backward asymmetry found at the Tevatron. Indeed, both measurements together can be used to identify the source of the asymmetry. This is demonstrated for the case of new Z', W' vector bosons and color-sextet and triplet scalars, exchanged in t, u channels, respectively, and a very heavy axigluon in the s channel. In particular, current LHC measurements disfavor Z', W' models above the 2 sigma level.

引用

页数：5

共 56 条

[1] Evidence for a mass dependent forward-backward asymmetry in top quark pair production [J].

Aaltonen, T. ;

Gonzalez, B. Alvarez ;

Amerio, S. ;

Amidei, D. ;

Anastassov, A. ;

Annovi, A. ;

Antos, J. ;

Apollinari, G. ;

Appel, J. A. ;

Apresyan, A. ;

Arisawa, T. ;

Artikov, A. ;

Asaadi, J. ;

Ashmanskas, W. ;

Auerbach, B. ;

Aurisano, A. ;

Azfar, F. ;

Badgett, W. ;

Barbaro-Galtieri, A. ;

Barnes, V. E. ;

Barnett, B. A. ;

Barria, P. ;

Bartos, P. ;

Bauce, M. ;

Bauer, G. ;

Bedeschi, F. ;

Beecher, D. ;

Behari, S. ;

Bellettini, G. ;

Bellinger, J. ;

Benjamin, D. ;

Beretvas, A. ;

Bhatti, A. ;

Binkley, M. ;

Bisello, D. ;

Bizjak, I. ;

Bland, K. R. ;

Blumenfeld, B. ;

Bocci, A. ;

Bodek, A. ;

Bortoletto, D. ;

Boudreau, J. ;

Boveia, A. ;

Brau, B. ;

Brigliadori, L. ;

Brisuda, A. ;

Bromberg, C. ;

Brucken, E. ;

Bucciantonio, M. ;

Budagov, J. .

PHYSICAL REVIEW D, 2011, 83 (11)

[2]

Aaltonen T., 9913 CDF COLL

[3] Forward-backward asymmetry in top quark-antiquark production [J].

Abazov, V. M. ;

Abbott, B. ;

Acharya, B. S. ;

Adams, M. ;

Adams, T. ;

Alexeev, G. D. ;

Alkhazov, G. ;

Alton, A. ;

Alverson, G. ;

Alves, G. A. ;

Aoki, M. ;

Arov, M. ;

Askew, A. ;

Asman, B. ;

Atramentov, O. ;

Avila, C. ;

BackusMayes, J. ;

Badaud, F. ;

Bagby, L. ;

Baldin, B. ;

Bandurin, D. V. ;

Banerjee, S. ;

Barberis, E. ;

Baringer, P. ;

Barreto, J. ;

Bartlett, J. F. ;

Bassler, U. ;

Bazterra, V. ;

Beale, S. ;

Bean, A. ;

Begalli, M. ;

Begel, M. ;

Belanger-Champagne, C. ;

Bellantoni, L. ;

Beri, S. B. ;

Bernardi, G. ;

Bernhard, R. ;

Bertram, I. ;

Besancon, M. ;

Beuselinck, R. ;

Bezzubov, V. A. ;

Bhat, P. C. ;

Bhatnagar, V. ;

Blazey, G. ;

Blessing, S. ;

Bloom, K. ;

Boehnlein, A. ;

Boline, D. ;

Boos, E. E. ;

Borissov, G. .

PHYSICAL REVIEW D, 2011, 84 (11)

[4] Single top quark production at LHC with anomalous Wtb couplings [J].

Aguilar-Saavedra, J. A. .

NUCLEAR PHYSICS B, 2008, 804 (1-2) :160-192

[5] Shaping the top asymmetry [J].

Aguilar-Saavedra, J. A. ;

Perez-Victoria, M. .

PHYSICS LETTERS B, 2011, 705 (03) :228-234

[6] No like-sign tops at Tevatron: Constraints on extended models and implications for the t(t)over-bar asymmetry [J].

Aguilar-Saavedra, J. A. ;

Perez-Victoria, M. .

PHYSICS LETTERS B, 2011, 701 (01) :93-100

[7]

Aguilar-Saavedra JA, 2011, J HIGH ENERGY PHYS, DOI 10.1007/JHEP05(2011)034

[8] Effective four-fermion operators in top physics: A roadmap [J].

Aguilar-Saavedra, J. A. .

NUCLEAR PHYSICS B, 2011, 843 (03) :638-672

[9] Renormalization-group improved predictions for top-quark pair production at hadron colliders [J].

Ahrens, Valentin ;

Ferroglia, Andrea ;

Neubert, Matthias ;

Pecjak, Ben D. ;

Yang, Li Lin .

JOURNAL OF HIGH ENERGY PHYSICS, 2010, (09)

[10] A composite Higgs model analysis of forward-backward asymmetries in the production of tops at Tevatron and bottoms at LEP and SLC [J].

Alvarez, Ezequiel ;

Da Rold, Leandro ;

Szynkman, Alejandro .

JOURNAL OF HIGH ENERGY PHYSICS, 2011, (05)

← 1 2 3 4 5 6 →