Search for the signal of monotop production at the early LHC

被引：22

作者：

Wang, Jian ^{[1
,2
]}

Li, Chong Sheng ^{[1
,2
,3
]}

Shao, Ding Yu ^{[1
,2
]}

Zhang, Hao ^{[1
,2
]}

机构：

[1] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

[2] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[3] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China

来源：

PHYSICAL REVIEW D | 2012年 / 86卷 / 03期

基金：

中国国家自然科学基金;

关键词：

PARITY-VIOLATING SUPERSYMMETRY; TEV PP COLLISIONS; QCD CORRECTIONS; COUPLINGS;

D O I：

10.1103/PhysRevD.86.034008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the potential of the early LHC to discover the signal of monotops, which can be decay products of some resonances in models such as R-parity-violating supersymmetry or SU(5), etc. We show how to constrain the parameter space of the models by the present data of Z boson hadronic decay branching ratio, K-0-(K) over bar (0) mixing and dijet productions at the LHC. Then, we study the various cuts imposed on the events, reconstructed from the hadronic final states, to suppress backgrounds and increase the significance in detail. And we find that in the hadronic mode the information from the missing transverse energy and reconstructed resonance mass distributions can be used to specify the masses of the resonance and the missing particle. Finally, we study the sensitivities to the parameters at the LHC with root s = 7 TeV and an integrated luminosity of 1 fb(-1) in detail. Our results show that the early LHC may detect this signal at 5 sigma level for some regions of the parameter space allowed by the current data.

引用

页数：11

共 41 条

[1] Search for new physics in the dijet mass distribution using 1 fb-1 of pp collision data at √s=7 TeV collected by the ATLAS detector [J].

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Abdelalim, A. A. ;

Abdesselam, A. ;

Abdinov, O. ;

Abi, B. ;

Abolins, M. ;

Abramowicz, H. ;

Abreu, H. ;

Acerbi, E. ;

Acharya, B. S. ;

Adams, D. L. ;

Addy, T. N. ;

Adelman, J. ;

Aderholz, M. ;

Adomeit, S. ;

Adragna, P. ;

Adye, T. ;

Aefsky, S. ;

Aguilar-Saavedra, J. A. ;

Aharrouche, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahsan, M. ;

Aielli, G. ;

Akdogan, T. ;

Akesson, T. P. A. ;

Akimoto, G. ;

Akimov, A. V. ;

Akiyama, A. ;

Alaml, M. S. ;

Alam, M. A. ;

Albert, J. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alessandria, F. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Alley, M. ;

Alimonti, G. ;

Alison, J. ;

Aliyev, M. ;

Allport, P. P. ;

Allwood-Spiers, S. E. .

PHYSICS LETTERS B, 2012, 708 (1-2) :37-54

[2] Search for displaced vertices arising from decays of new heavy particles in 7 TeV pp collisions at ATLAS [J].

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Abdelalim, A. A. ;

Abdesselam, A. ;

Abdinov, O. ;

Abi, B. ;

Abolins, M. ;

Abramowicz, H. ;

Abreu, H. ;

Acerbi, E. ;

Acharya, B. S. ;

Adams, D. L. ;

Addy, T. N. ;

Adelman, J. ;

Aderholz, M. ;

Adomeit, S. ;

Adragna, P. ;

Adye, T. ;

Aefsky, S. ;

Aguilar-Saavedra, J. A. ;

Aharrouche, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahsan, M. ;

Aielli, G. ;

Akdogan, T. ;

Akesson, T. P. A. ;

Akimoto, G. ;

Akimov, A. V. ;

Akiyama, A. ;

Alam, M. S. ;

Alam, M. A. ;

Albert, J. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alessandria, F. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. ;

Aliyev, M. ;

Allport, P. P. ;

Allwood-Spiers, S. E. .

PHYSICS LETTERS B, 2012, 707 (05) :478-496

[3] A search for new physics in dijet mass and angular distributions in pp collisions at √s=7 TeV measured with the ATLAS detector [J].

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Abdelalim, A. A. ;

Abdesselam, A. ;

Abdinov, O. ;

Abi, B. ;

Abolins, M. ;

Abramowicz, H. ;

Abreu, H. ;

Acerbi, E. ;

Acharya, B. S. ;

Adams, D. L. ;

Addy, T. N. ;

Adelman, J. ;

Aderholz, M. ;

Adomeit, S. ;

Adragna, P. ;

Adye, T. ;

Aefsky, S. ;

Aguilar-Saavedra, A. ;

Aharrouche, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahsan, M. ;

Aielli, G. ;

Akdogan, T. ;

Akesson, T. P. ;

Akimoto, G. ;

Akimov, A. V. ;

Akiyama, A. ;

Alam, M. S. ;

Alam, M. A. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Aleppo, M. ;

Alessandria, F. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. ;

Aliyev, M. ;

Allport, P. P. ;

Allwood-Spiers, S. E. .

NEW JOURNAL OF PHYSICS, 2011, 13

[4] Search for New Particles in Two-Jet Final States in 7 TeV Proton-Proton Collisions with the ATLAS Detector at the LHC [J].

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Abdelalim, A. A. ;

Abdesselam, A. ;

Abdinov, O. ;

Abi, B. ;

Abolins, M. ;

Abramowicz, H. ;

Abreu, H. ;

Acerbi, E. ;

Acharya, B. S. ;

Ackers, M. ;

Adams, D. L. ;

Addy, T. N. ;

Adelman, J. ;

Aderholz, M. ;

Adomeit, S. ;

Adorisio, C. ;

Adragna, P. ;

Adye, T. ;

Aefsky, S. ;

Aguilar-Saavedra, J. A. ;

Aharrouche, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahmed, H. ;

Ahsan, M. ;

Aielli, G. ;

Akdogan, T. ;

Akesson, T. P. A. ;

Akimoto, G. ;

Akimov, A. V. ;

Aktas, A. ;

Alam, M. S. ;

Alam, M. A. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Aleppo, M. ;

Alessandria, F. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. .

PHYSICAL REVIEW LETTERS, 2010, 105 (16)

[5]

AAD G, ARXIV09010512 ATLAS

[6] Search for squark production in R-parity violating supersymmetry at HERA [J].

Aktas, A ;

Andreev, V ;

Anthonis, T ;

Asmone, A ;

Babaev, A ;

Backovic, S ;

Bähr, J ;

Baranov, P ;

Barrelet, E ;

Bartel, W ;

Baumgartner, S ;

Becker, J ;

Beckingham, M ;

Behnke, O ;

Behrendt, O ;

Belousov, A ;

Berger, C ;

Berger, N ;

Berndt, T ;

Bizot, JC ;

Böhme, J ;

Boenig, MO ;

Boudry, V ;

Bracinik, J ;

Brisson, V ;

Bröker, HB ;

Brown, DP ;

Bruncko, D ;

Büsser, FW ;

Bunyatyan, A ;

Buschhorn, G ;

Bystritskaya, L ;

Campbell, AJ ;

Caron, S ;

Cassol-Brunner, F ;

Cerny, K ;

Chekelian, V ;

Collard, C ;

Contreras, JG ;

Coppens, YR ;

Coughlan, JA ;

Cousinou, MC ;

Cox, BE ;

Cozzika, G ;

Cvach, J ;

Dainton, JB ;

Dau, WD ;

Daum, K ;

Delcourt, B ;

Demirchyan, R .

EUROPEAN PHYSICAL JOURNAL C, 2004, 36 (04) :425-440

[7] Phenomenology of a light gluon resonance in top-physics at Tevatron and LHC [J].

Alvarez, Ezequiel ;

Da Rold, Leandro ;

Sanchez Vietto, Juan Ignacio ;

Szynkman, Alejandro .

JOURNAL OF HIGH ENERGY PHYSICS, 2011, (09)

[8] MadGraph 5: going beyond [J].

Alwall, Johan ;

Herquet, Michel ;

Maltoni, Fabio ;

Mattelaer, Olivier ;

Stelzer, Tim .

JOURNAL OF HIGH ENERGY PHYSICS, 2011, (06)

[9] Dark matter-motivated searches for exotic fourth-generation mirror quarks in Tevatron and early LHC data [J].

Alwall, Johan ;

Feng, Jonathan L. ;

Kumar, Jason ;

Su, Shufang .

PHYSICAL REVIEW D, 2010, 81 (11)

[10] Monotops at the LHC [J].

Andrea, J. ;

Fuks, B. ;

Maltoni, F. .

PHYSICAL REVIEW D, 2011, 84 (07)

← 1 2 3 4 5 →