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Author  |
Chachamis, G.; Sabio Vera, A.; Salas, C. |
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Title |
Bootstrap and momentum transfer dependence in small x evolution equations |
Type |
Journal Article |
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Year |
2013 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
87 |
Issue |
1 |
Pages |
016007 - 6pp |
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Keywords |
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Abstract |
Using Monte Carlo integration techniques, we investigate running coupling effects compatible with the high energy bootstrap condition to all orders in the strong coupling in evolution equations valid at small values of Bjorken x in deep inelastic scattering. A model for the running of the coupling with analytic behavior in the infrared region and compatible with power corrections to jet observables is used. As a difference to the fixed coupling case, where the momentum transfer acts as an effective strong cutoff of the diffusion to infrared scales, in our running coupling study the dependence on the momentum transfer is much milder. |
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Address |
[Chachamis, G.] Cient Univ Valencia, Consejo Super Invest, Inst Fis Corpuscular, E-46980 Paterna Valencia, Spain |
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Publisher |
Amer Physical Soc |
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Language |
English |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1550-7998 |
ISBN |
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Expedition |
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Conference |
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Notes |
WOS:000313426000004 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
no |
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Call Number |
IFIC @ pastor @ |
Serial |
1303 |
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Author |
Chachamis, G.; Hentschinski, M.; Madrigal Martinez, J.D.; Sabio Vera, A. |
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Title |
Next-to-leading order corrections to the gluon-induced forward jet vertex from the high energy effective action |
Type |
Journal Article |
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Year |
2013 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
87 |
Issue |
7 |
Pages |
076009 - 11pp |
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Keywords |
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Abstract |
We determine both real and virtual next-to-leading order corrections to the gluon-induced forward jet vertex from the high energy effective action proposed by Lipatov. For these calculations we employ the same regularization and subtraction formalism developed in our previous work on the quark-initiated vertex. We find agreement with previous results in the literature. |
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Address |
UVEG, CSIC, Inst Fis Corpuscular, Valencia 46980, Spain |
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Thesis |
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Publisher |
Amer Physical Soc |
Place of Publication |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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ISSN |
1550-7998 |
ISBN |
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Area |
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Expedition |
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Conference |
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Notes |
WOS:000317866500004 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1410 |
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Author |
Chachamis, G.; Hentschinski, M.; Madrigal Martinez, J.D.; Sabio Vera, A. |
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Title |
Gluon Regge trajectory at two loops from Lipatov's high energy effective action |
Type |
Journal Article |
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Year |
2013 |
Publication |
Nuclear Physics B |
Abbreviated Journal |
Nucl. Phys. B |
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Volume |
876 |
Issue |
2 |
Pages |
453-472 |
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Keywords |
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Abstract |
We present the derivation of the two-loop gluon Regge trajectory using Lipatov's high energy effective action and a direct evaluation of Feynman diagrams. Using a gauge invariant regularization of high energy divergences by deforming the light-cone vectors of the effective action, we determine the two-loop self-energy of the reggeized gluon, after computing the master integrals involved using the Mellin-Barnes representations technique. The self-energy is further matched to QCD through a recently proposed subtraction prescription. The Regge trajectory of the gluon is then defined through renormalization of the reggeized gluon propagator with respect to high energy divergences. Our result is in agreement with previous computations in the literature, providing a non-trivial test of the effective action and the proposed subtraction and renormalization framework. |
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Address |
[Chachamis, G.] Inst Fis Corpuscular UVEG CSIC, E-46980 Valencia, Spain, Email: martin.hentschinski@gmail.com |
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Publisher |
Elsevier Science Bv |
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Language |
English |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0550-3213 |
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Area |
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Expedition |
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Conference |
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Notes |
WOS:000325903700004 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1622 |
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Author |
Chachamis, G.; Hentschinski, M.; Madrigal Martinez, J.D.; Sabio Vera, A. |
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Title |
Forward jet production and quantum corrections to the gluon Regge trajectory from Lipatov's high energy effective action |
Type |
Journal Article |
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Year |
2014 |
Publication |
Physics of Particles and Nuclei |
Abbreviated Journal |
Phys. Part. Nuclei |
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Volume |
45 |
Issue |
4 |
Pages |
788-799 |
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Keywords |
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Abstract |
We review Lipatov's high energy effective action and show that it is a useful computational tool to calculate scattering amplitudes in (quasi)-multi-Regge kinematics. We explain in some detail our recent work where a novel regularization and subtraction procedure has been proposed that allows to extend the use of this effective action beyond tree level. Two examples are calculated at next-to-leading order: forward jet vertices and the gluon Regge trajectory. |
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Address |
[Chachamis, G.] Univ Valencia, Consejo Super Invest Cient, Inst Fis Corpuscular, E-46980 Valencia, Spain, Email: grigorios.chachamis@ific.uv.es; |
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Publisher |
Maik Nauka/Interperiodica/Springer |
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English |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1063-7796 |
ISBN |
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Expedition |
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Conference |
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Notes |
WOS:000339895400012 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1886 |
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Author |
Chachamis, G.; Deak, M.; Rodrigo, G. |
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Title |
Heavy quark impact factor in kT-factorization |
Type |
Journal Article |
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Year |
2013 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
12 |
Issue |
12 |
Pages |
066 - 16pp |
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Keywords |
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Abstract |
We present the calculation of the finite part of the heavy quark impact factor at next-to-leading logarithmic accuracy in a form suitable for phenomenological studies such as the calculation of the cross-section for single bottom quark production at the LHC within the kT-factorization scheme. |
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Notes |
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Approved |
no |
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Is ISI |
yes |
International Collaboration |
no |
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Call Number |
IFIC @ pastor @ |
Serial |
1766 |
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