报告题目：Vector-Boson-Fusion:?Parton-shower?and?Anomalous-coupling?Effects
报告人：??Michael?Rauch??研究员
报告人单位：Karlsruher?Institut?fuer?Technologie,?Germany
报告时间：2016年7月25日（周一）上午9:30-11:00
报告地点：北京大学物理西楼206会议室
摘要：?Production?of?electroweak?bosons?via?vector-boson?fusion?(VBF)
is?one?of?the?main?process?classes?to?study?during?the?run-2?phase?of?the?LHC.
Its?double-DIS-like?structure?gives?rise?to?the?characteristic?signature?of?two
tagging?jets?in?the?forward?regions?of?the?detectors,?and?distinguishes?it?from
QCD-induced?processes,?which?exhibit?much?more?central?jet?activity.?In?this?talk,
we?investigate?the?effects?of?combining?NLO?QCD?results?with?parton-shower
effects?using?the?latest?versions?of?VBFNLO?3?and?Herwig?7.?A?consistent?treatment
of?renormalization?and?factorization?scale?variations?in?the?hard?process?and?the
parton?shower?allows?to?assign?more?reliable?theory?uncertainty?predictions?to?key
distributions?like?the?central?rapidity?gap.?VBF?processes?also?allow?to?study?the
triple?and,?in?particular,?quartic?gauge?couplings?and?test?them?for?new-physics
effects.?We?show?arising?challenges?like?unitarity?violation?when?adding?anomalous
contributions,?and?discuss?possible?solutions.
