高能物理与核物理
高能物理與覈物理
고능물리여핵물리
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS
2007年
9期
844-848
,共5页
非对易时空%杨氏定理%光子对撞机
非對易時空%楊氏定理%光子對撞機
비대역시공%양씨정리%광자대당궤
noncommutative space-time%Yang's theorem%photon collider
讨论关于在ILC用gamma gamma到Z过程检验非对易时空能标(原文发在hep-ph/0604115).在通常时空量子场论中,由杨氏定理可知一个自旋为1的粒子不可能衰变为两个光子.但在非对易时空中此过程是允许的.因此这个过程能作为检验非对易时空的工具.ILC的光子对撞模式能实现这个过程.如果总亮度能达到500fb-1,我们证明对Gamma(Z to gamma gamma)宽度的测量精度将比现有限制(＜5.2×10-5GeV)好3-4个数量级.对非对易时空能标的检测可高达几个TeV.
討論關于在ILC用gamma gamma到Z過程檢驗非對易時空能標(原文髮在hep-ph/0604115).在通常時空量子場論中,由楊氏定理可知一箇自鏇為1的粒子不可能衰變為兩箇光子.但在非對易時空中此過程是允許的.因此這箇過程能作為檢驗非對易時空的工具.ILC的光子對撞模式能實現這箇過程.如果總亮度能達到500fb-1,我們證明對Gamma(Z to gamma gamma)寬度的測量精度將比現有限製(＜5.2×10-5GeV)好3-4箇數量級.對非對易時空能標的檢測可高達幾箇TeV.
토론관우재ILC용gamma gamma도Z과정검험비대역시공능표(원문발재hep-ph/0604115).재통상시공양자장론중,유양씨정리가지일개자선위1적입자불가능쇠변위량개광자.단재비대역시공중차과정시윤허적.인차저개과정능작위검험비대역시공적공구.ILC적광자대당모식능실현저개과정.여과총량도능체도500fb-1,아문증명대Gamma(Z to gamma gamma)관도적측량정도장비현유한제(＜5.2×10-5GeV)호3-4개수량급.대비대역시공능표적검측가고체궤개TeV.
In this talk we report our work on testing Noncommutative Space-Time Scale Using γγ → Z at ILC. In ordinary space-time theory, decay of a spin-1 particle into two photons is strictly forbidden due to the Yang's Theorem. With noncommutative space-time this process can occur. This process thus provides an important probe for noncommutative space-time. The γγ collision mode at the ILC provides an ideal place to carry out such a study. Assuming an integrated luminosity of 500fb-1, we show that the constraint which can be achieved on Г(Z→ γγ) is three to four orders of magnitude better than the current bound of 5.2 × 10-5 GeV.The noncommutative scale can be probed up to a few TeVs.
