The Longitudinal Structure Function FL as a Function of F2 and dF2/dln Q2 at Small x. The Next-to-Leading Analysis
نویسندگان
چکیده
منابع مشابه
Complete next-to-leading order QCD corrections to the photon structure functions F2 gamma (x,Q2) and FL gamma (x,Q2).
We present the complete NLO QCD analysis of the photon structure functions F γ 2 (x, Q 2) and F γ L (x, Q 2) for a real photon target. In particular we study the heavy flavor content of the structure functions which is due to two different production mechanisms, namely collisions of a virtual photon with a real photon, and with a parton. We observe that the charm contributions are noticeable fo...
متن کاملMEASUREMENT AND QCD-ANALYSIS OF THE PROTON STRUCTURE FUNCTION F2(x;Q2) AT HERA
New results on measurements of the proton structure function F 2 (x;Q 2) from H1 and ZEUS at HERA are presented. The data were collected in 1995 and 1996 covering the range 0:16 Q 2 90 GeV 2 and reaching values of x down to 210 ?6. Contrary to observations at values of Q 2 10 GeV 2 , the rise in F 2 with decreasing x is found to be weaker at low Q 2. Conventional NLO QCD evolution equations pro...
متن کاملThe Longitudinal Structure Function F L as a Function of F 2 and dF 2 / dlnQ 2 at small x . The Next - to - Leading Analysis
We present a set of formulae to extract the longitudinal deep inelastic structure function FL from the transverse structure function F2 and its derivative dF2/dlnQ 2 at small x. Our expressions are valid for any value of δ, being x the behavior of the parton densities at low x. Using F2 HERA data we obtain FL in the range 10 ≤ x ≤ 10 at Q = 20 GeV. Some other applications of the formulae are po...
متن کاملthe differential effects of debate and media analysis as relate to enhancing efl learners critical thinking ability and writing performances
critical thinking ability has an important role in education. accordingly, scholars around the world are searching for new ways for teaching and improving students critical thinking ability. in line with the studies in efl contexts supporting the positive relationship between critical thinking and writing performances, this study investigated the differential effects of halverson’s critical thi...
15 صفحه اولMeasurements of the Longitudinal Proton Structure Function FL at HERA
The measurements of the longitudinal proton structure function F L in deep inelastic positron-proton scattering at low Bjorken x are presented. The data were taken by the HERA experiments H1 and ZEUS in a series of runs with different proton beam energies. The measured longitudinal structure function is compared to theoretical predictions in higher order QCD and using dipole model calculations....
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: Modern Physics Letters A
سال: 1997
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732397000984