Form factor recursion relations at loop level

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Tree Level Recursion Relations In General Relativity

Recently, tree-level recursion relations for scattering amplitudes of gluons in YangMills theory have been derived. In this note we propose a generalization of the recursion relations to tree-level scattering amplitudes of gravitons. We use the relations to derive new simple formulae for all amplitudes up to six gravitons. In particular, we present an explicit formula for the six graviton non-M...

متن کامل

Practical Twistor Spinoffs: On-Shell Tree and Loop Recursion Relations

Much of the physics at a linear collider is precision physics. Theoretical predictions should match the anticipated experimental precision. In the case of QCD corrections to cross sections with a large number of final-state particles, one of the limitations is the lack of availability of one-loop QCD amplitudes. As just one example, next-to-leading order (NLO) QCD predictions for the production...

متن کامل

lνγ Form Factors at Two - loop

Within Chiral Perturbation Theory (CHPT) we compute the form factors A, V and γ = A/V in the π → lνγ decay to O(p 6).

متن کامل

Vertex diagrams for the QED form factors at the 2 - loop level

We carry out a systematic investigation of all the 2-loop integrals occurring in the electron vertex in QED in the continuous D-dimensional regularization scheme, for on-shell electrons, momentum transfer t = −Q2 and finite squared electron mass me = a. We identify all the Master Integrals (MI’s) of the problem and write the differential equations in Q2 which they satisfy. The equations are exp...

متن کامل

Recursion Relations in Semirigid Topological Gravity

A field theoretical realization of topological gravity is discussed in the semirigid geometry context. In particular, its topological nature is given by the relation between deRham cohomology and equivariant BRST cohomology and the fact that all but one of the physical operators are BRST-exact. The puncture equation and the dilaton equation of pure topological gravity are reproduced, following ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of High Energy Physics

سال: 2019

ISSN: 1029-8479

DOI: 10.1007/jhep02(2019)182