Zobrazeno 1 - 10
of 21
pro vyhledávání: '"N. Ya. Ivanov"'
Publikováno v:
Physics Letters B, Vol 780, Iss, Pp 303-307 (2018)
Physics Letters
Physics Letters
We study the Callan–Gross ratio R=dσL/dσT in heavy-quark pair leptoproduction, lN→l′QQ¯X, as a probe of linearly polarized gluons inside unpolarized proton, where dσT (dσL) is the differential cross section of the γ⁎N→QQ¯X process in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e040cd26088fd58735e6512a01bfc1c
https://doi.org/10.1016/j.physletb.2018.03.008
https://doi.org/10.1016/j.physletb.2018.03.008
Publikováno v:
Physics Letters B, Vol 772, Iss C, Pp 283-289 (2017)
Physics Letters B
Physics Letters B
We present the QCD predictions for the azimuthal $\cos 2\varphi$ asymmetry in charm leptoproduction for the kinematics of the COMPASS experiment at CERN. The asymmetry is predicted to be large, about 15%. The radiative corrections to the QCD predicti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c753d3223196f3b19605b4008c48e97
http://www.sciencedirect.com/science/article/pii/S0370269317305336
http://www.sciencedirect.com/science/article/pii/S0370269317305336
We consider the azimuthal $\cos \varphi$ and $\cos 2\varphi$ distributions and the Callan-Gross ratio $R={\rm d}\sigma_L/{\rm d}\sigma_T$ in heavy-quark pair electroproduction, $lN\rightarrow l^{\prime}Q\bar{Q}X$, as probes of linearly polarized gluo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73b33e871c53403b5498245293d02df5
http://arxiv.org/abs/1911.09742
http://arxiv.org/abs/1911.09742
Publikováno v:
EPJ Web of Conferences, Vol 204, p 02006 (2019)
In recent papers [1,2], two new ways have been proposed to probe the linear polarization of gluons in unpolarized proton: using the azimuthal asymmetries and Callan-Gross ratio in heavy-quark pair leptoproduction, $lN\rightarrow l^{\prime}Q\bar{Q}X$.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22f19326a24cab0f43c105fd352e2ac1
http://arxiv.org/abs/1812.00393
http://arxiv.org/abs/1812.00393
Autor:
N. Ya. Ivanov
Publikováno v:
Physics of Particles and Nuclei. 45:19-22
We study two experimental ways to measure the heavy-quark content of the proton: using the Callan-Gross ratio $R(x,Q^2)=F_L/F_T$ and/or the azimuthal $\cos(2\varphi)$ asymmetry in DIS. Our approach is based on the following observations. First, the r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::901025f25fe4da4951ba8923483685fa
https://doi.org/10.1134/s1063779614010432
https://doi.org/10.1134/s1063779614010432
Publikováno v:
Physics Letters
Physics Letters B, Vol 777, Iss, Pp 435-441 (2018)
Physics Letters B, Vol 777, Iss, Pp 435-441 (2018)
We study the azimuthal $\cos \varphi$ and $\cos 2\varphi$ asymmetries in heavy-quark pair leptoproduction, $lN\rightarrow l^{\prime}Q\bar{Q}X$, as probes of linearly polarized gluons inside unpolarized proton, where the azimuth $\varphi$ is the angle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d125f23318283c4f01cf947bd7f95e16
Autor:
N. Ya. Ivanov
We study two experimental ways to measure the heavy-quark content of the proton: using the Callan-Gross ratio $R(x,Q^2)=F_L/F_T$ and/or azimuthal $\cos(2\varphi)$ asymmetry in deep inelastic lepton-nucleon scattering. Our approach is based on the per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e124534a41f39a2d5650da5d4a862bcd
http://arxiv.org/abs/1604.04310
http://arxiv.org/abs/1604.04310
Autor:
N. Ya. Ivanov
Publikováno v:
Nuclear Physics B. 814:142-155
We analyze the Callan–Gross ratio R ( x , Q 2 ) = F L / F T in heavy-quark leptoproduction as a probe of the charm content of the proton. To estimate the charm-initiated contributions, we use the ACOT(χ) variable-flavor-number scheme. Our analysis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c49ceba59c6f1cc90b46950ccf7b0ff
https://doi.org/10.1016/j.nuclphysb.2009.01.013
https://doi.org/10.1016/j.nuclphysb.2009.01.013
Autor:
N. Ya. Ivanov
Publikováno v:
Nuclear Physics B. 666:88-104
We analyze the perturbative and parametric stability of the QCD predictions for the azimuthal asymmetries in heavy quark leptoproduction. At leading order, the $\cos \phi$ asymmetry vanishes whereas the $\cos 2\phi$ one is of leading twist and predic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28cb2030544aa97c46601a8c6b30b3f9
https://doi.org/10.1016/s0550-3213(03)00529-7
https://doi.org/10.1016/s0550-3213(03)00529-7
Publikováno v:
Zeitschrift für Physik C Particles and Fields. 63:137-145
A generalization of the quark-gluon string model to the case of bosonic resonances production in hadron-hadron collisions is proposed. In the framework of our approach, the properties of the fragmentation functions of quarks and diquarks are determin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b09254e55ff741ccd56ce9a9ae8b4dd
https://doi.org/10.1007/bf01577553
https://doi.org/10.1007/bf01577553