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Production Cross-Section Estimates for Strongly-Interacting Electroweak-Symmetry Breaking Sector Resonances at Particle Colliders
  • ISSN号：0253-6102
  • 期刊名称：《理论物理通讯：英文版》
  • 时间：0
  • 分类：O572.214[理学—粒子物理与原子核物理;理学—物理]
  • 作者机构：Departamento de Física Teórica,Universidad Complutense de Madrid, State Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Science, Helmholtz-Institut für Strahlen-und Kernphysik and Bethe Center for Theoretical Physics,Universit?t Bonn
  • 相关基金：Supported by the Spanish Excellence Network on Hadronic Physics FIS2014-57026-REDT;by Spanish Grants Universidad Complutense UCM:910309 and Ministerio de Economiay Competitividad MINECO:FPA2011-27853-C02-01;MINECO:FPA2014-53375-C2-1-P;by the Deutsche Forschungsgemeinschaft and National Natural Science Foundation of China through Funds Provided to the Sino-German CRC110 “Symmetries and the Emergence of Structure in QCD”(NSFC Grant No.11261130311);by NSFC(Grant No.11165005)
作者： Antonio Dobado, GUO Feng-Kun, Felipe J.Llanes-Estrada
关键词： STRONGLY, INTERACTING, ELECTROWEAK, symmetry, breaking, strongly interacting electroweak symmetry breaking
中文摘要：

We are exploring a generic strongly-interacting Electroweak Symmetry Breaking Sector(EWSBS) with the low-energy effective field theory for the four experimentally known particles(W_L~±,Z_l,h) and its dispersion-relation based unitary extension.In this contribution we provide simple estimates for the production cross-section of pairs of the EWSBS bosons and their resonances at proton-proton colliders as well as in a future e~-e~+(or potentially aμ~-μ~+) collider with a typical few-TeV energy.We examine the simplest production mechanisms,tree-level production through a W(dominant when quantum numbers allow) and the simple effective boson approximation(in which the electroweak bosons are considered as collinear partons of the colliding fermions).We exemplify with custodial isovector and isotensor resonances at 2 TeV,the energy currently being discussed because of a slight excess in the ATLAS 2-jet data.We find it hard,though not unthinkable,to ascribe this excess to one of these W_lW_l rescattering resonances.An isovector resonance could be produced at a rate smaller than,but close to earlier CMS exclusion bounds,depending on the parameters of the effective theory.The ZZ excess is then problematic and requires additional physics(such as an additional scalar resonance).The isotensor one(that would describe all charge combinations) has smaller cross-section.

英文摘要：

We are exploring a generic strongly-interacting Electroweak Symmetry Breaking Sector(EWSBS) with the low-energy effective field theory for the four experimentally known particles(W_L~±,Z_l,h) and its dispersion-relation based unitary extension.In this contribution we provide simple estimates for the production cross-section of pairs of the EWSBS bosons and their resonances at proton-proton colliders as well as in a future e~-e~+(or potentially aμ~-μ~+) collider with a typical few-TeV energy.We examine the simplest production mechanisms,tree-level production through a W(dominant when quantum numbers allow) and the simple effective boson approximation(in which the electroweak bosons are considered as collinear partons of the colliding fermions).We exemplify with custodial isovector and isotensor resonances at 2 TeV,the energy currently being discussed because of a slight excess in the ATLAS 2-jet data.We find it hard,though not unthinkable,to ascribe this excess to one of these W_lW_l rescattering resonances.An isovector resonance could be produced at a rate smaller than,but close to earlier CMS exclusion bounds,depending on the parameters of the effective theory.The ZZ excess is then problematic and requires additional physics(such as an additional scalar resonance).The isotensor one(that would describe all charge combinations) has smaller cross-section.

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期刊信息
  • 《理论物理通讯：英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中科院理论物理所 中国物理学会
  • 主编：孙昌浦
  • 地址：北京2735邮政信箱 中国科学院理论物理研究所编辑部
  • 邮编：100190
  • 邮箱：ctp@itp.ac.cn
  • 电话：010-62551495 62541813 62550630
  • 国际标准刊号：ISSN：0253-6102
  • 国内统一刊号：ISSN：11-2592/O3
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  • 获奖情况:
  • 首届国家期刊奖,中国科学院优秀期刊特别奖,国家期刊奖百种重点期刊,中国期刊方阵“双高”期刊
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  • 被引量:342