Small- resummation and HERA structure function data
نویسندگان
چکیده
منابع مشابه
Small–x Resummation and HERA Structure Function Data
We apply our systematic NLO small x resummation of singlet splitting functions to the scaling violations of structure functions and compare the results with data. We develop various theoretical tools which are needed in order to relate resummed parton distributions to measurable structure functions, and we present results from a variety of fits to HERA data for the structure functions F2 and FL...
متن کاملParton distributions with small-x resummation: evidence for BFKL dynamics in HERA data
We present a determination of the parton distribution functions of the proton in which NLO and NNLO fixed-order calculations are supplemented by NLLx small-x resummation. Deep inelastic structure functions are computed consistently at NLO+NLLx or NNLO+NLLx, while for hadronic processes small-x resummation is included only in the PDF evolution, with kinematic cuts introduced to ensure the fitted...
متن کاملStructure Function Measurement at HERA
Preliminary results1 on a measurement of the proton structure function F2(x,Q 2) are reported for momentum transfers squared Q2 between 1.5 GeV2 and 5000 GeV2 and for Bjorken x between 5 · 10−5 and 0.32, using data collected by the HERA experiments H1 and ZEUS in 1994. F2 increases significantly with decreasing x, even in the lowest reachable Q2 region. The data are well described by a Next to ...
متن کاملFuture Diffractive Structure Function Measurements at HERA
The purposes and possibilities of future diffractive structure function measurements at HERA are presented. A review of the current range and accuracy of the measurement of F D(3) 2 (β, xIP , Q ) is presented and an estimate of the precision of future measurements is given. A feasibility study is performed on the measurement of the structure functions F D(4) 2 (β, xIP , Q , t), F 2 charm , R , ...
متن کاملLimitations of small x resummation methods from F 2 data
We discuss several methods of calculating the DIS structure functions F 2 (x, Q 2) based on BFKL-type small x resummations. Taking into account new HERA data ranging down to small x and low Q 2 , we conclude that a pure leading order BFKL-based approach fails to describe the data. Other methods based on high energy factorization are closer to conventional renormalization group equations. Despit...
متن کاملذخیره 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: Nuclear Physics B
سال: 2001
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(01)00023-2