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Igor Cherednikov (University of Antwerp)08/12/2014, 11:00Opening address and introduction to philosophy of the meetingGo to contribution page
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Andrea Signori (VU University Amsterdam - Nikhef)08/12/2014, 11:10
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Federico Alberto Ceccopieri (Universita & INFN, Milano-Bicocca (IT))08/12/2014, 11:20We solve recently proposed TMD evolution equations for unpolarised quark in a particular limit which is suitable for comparison with other results in the literature.Go to contribution page
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Ignazio Scimemi (Universidad Complutense (ES))08/12/2014, 11:45In this talk I would like to point out the importance of evolution and resummations in the extraction of TMDs. I will make the case of unpolarized TMDPDF and discuss recent results. I will point out how the knowledge of TMDs can affect the interpretation of the LHC outcomes is some relevant cases.Go to contribution page
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Igor Cherednikov (University of Antwerp)08/12/2014, 13:30
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Daniel Boer (University of Groningen)08/12/2014, 13:50
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Marco Radici (urn:Google)08/12/2014, 14:35We calculate the transverse momentum dependence in the production of two back-to-back hadrons in electron-positron annihilations at 100 GeV^2. We use the parameters of the transverse-momentum-dependent (TMD) fragmentation functions that we recently extracted from the HERMES multiplicity data at 2.4 GeV^2. We apply TMD evolution according to two different approaches and using different...Go to contribution page
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08/12/2014, 15:00
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Mariaelena Boglione (University of Turin)09/12/2014, 09:35TMD resummation for SIDIS processes is studied in the framework of the original Collins-Soper-Sterman formalism, with special attention to the interplay between perturbative QCD and non-perturbative contributions. Phenomenological implementations of the TMD formalism to SIDIS processes will be discussed with practical examples, exploring different kinematical configurations of SIDIS experiments.Go to contribution page
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Ian Balitsky (ODU/JLab)09/12/2014, 10:00
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Krzysztof Kutak (Instytut Fizyki Jadrowej Polskiej Akademii Nauk)09/12/2014, 11:00We propose a method to introduce Sudakov effects to unintegrated gluon density promoting it to be hard scale dependent. The advantage of the approach is that it guarantees that the gluon density is positive definite and that on integrated level the Sudakov effects cancel. Besides that the method to introduce the Sudakov effects is convenient since it does not need evaluation of cross section...Go to contribution page
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09/12/2014, 11:25
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José Daniel Madrigal Martínez09/12/2014, 14:00We introduce Lipatov's effective action, which displays high-energy factorization in a gauge invariant way through the inclusion of reggeon fields, and show several computational applications of this approach, including the gluon Regge trajectory at two loops and the NLL effective jet vertices for semi-inclusive forward jet production and jet-gap-jet configurations.Go to contribution page
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Samuel Wallon09/12/2014, 14:25The study of the production of two forward jets with a large interval of rapidity at hadron colliders was proposed by Mueller and Navelet as a possible test of the high energy dynamics of QCD. We analyze this process within a complete next-to-leading logarithm framework, supplemented by the use of the Brodsky-Lepage-Mackenzie procedure extended to the perturbative Regge dynamics, to find...Go to contribution page
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Renaud Boussarie09/12/2014, 14:50We present the calculation of the impact factor for the photon to quark, antiquark and gluon transition within Balitsky's high energy OPE. We also rederive the impact factor for photon to quark and antiquark transition within the same framework. These results provide the necessary building blocks for further phenomenological studies of inclusive diffractive DIS as well as for two and three...Go to contribution page
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09/12/2014, 15:15
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09/12/2014, 19:00
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Giancarlo Ferrera (University of Milan)10/12/2014, 09:30We consider the transverse-momentum distribution of generic high-mass systems of non-strongly interacting particles (lepton pairs, vector bosons, Higgs particles, ...) produced in hadronic collisions. The logarithmically-enhanced contributions at small transverse momentum are treated to all perturbative orders by a universal resummation formula that depends on a single process-dependent hard...Go to contribution page
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Rene angeles martinez (urn:Google)10/12/2014, 10:30Recent developments (JHEP07 (2012) 026) have shown that is not always possible to factorize all collinear singularities into process independent and universal functions. This breakdown of collinear factorization was anticipated using an algorithm to compute the leading soft gluon corrections to a hard process (JHEP08(2006)059). Such algorithm is base on the assumption that the successive...Go to contribution page
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10/12/2014, 10:55
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Miguel Echevarría (VU/Nikhef)10/12/2014, 13:30
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Francesco Hautmann (Institute of Theoretical Physics)10/12/2014, 14:00
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Gennady Lykasov (Joint Inst. for Nuclear Research (RU))10/12/2014, 14:30We present new results on the unintegrated TMD (transverse momentum dependent) gluon density (u.g.d.) at low $x$, which based on our previous study [1]. We match this u.g.d. at low transverse momenta $\mid k_T\mid$ and starting scale $Q_0^2 = 1-3$~GeV$^2$ to the exact solution of the BFKL equation outside of the saturation region at large $\mid k_T\mid$ obtained in [2], which includes all...Go to contribution page
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10/12/2014, 14:55
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Cristian Pisano11/12/2014, 09:00Linearly polarized gluons inside an unpolarized proton contribute to the transverse momentum distributions of (pseudo)scalar particles produced inclusively in hadronic collisions, such as Higgs bosons and quarkonia with even charge conjugation ($\eta_c$, $\eta_b$, $\chi_{c0}$, $\chi_{b0}$). Moreover, they can produce azimuthal asymmetries in the associated production of a Higgs boson and a...Go to contribution page
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Jean-Philippe Lansberg (IPN Orsay, Paris Sud U. / IN2P3-CNRS)11/12/2014, 09:25In this talk, I discuss how the study of quarkonium production in unpolarised and polarised proton-proton collisions can provide important insights on the gluon TMDs. The study of back-to-back production of quarkonium + isolated photon provides a unique way to extract the gluon TMDs f1^g and h1^perp,g at the LHC [1] and at a proposed Fixed-Target ExpeRiment at the LHC (AFTER@LHC). Although...Go to contribution page
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Hans Van Haevermaet (University of Antwerp (BE))11/12/2014, 09:50In the forthcoming high luminosity phase of the LHC many of the most interesting measurements for precision QCD studies are affected by large pile-up conditions. However, with the recently discovered Higgs boson, which couples in the heavy top limit directly to gluons, we have access to a novel production process to probe QCD by a colour-singlet current. In this study we compare observables in...Go to contribution page
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Alexey Vladimirov (urn:Google)11/12/2014, 10:15We present the description of the exponentiated diagrams in terms of generating function within the universal diagrammatic technique. In particular, we show the exponentiation of the gauge theory amplitudes involving products of an arbitrary number of Wilson lines of arbitrary shapes, which generalizes the concept of web diagrams. The presented method gives a new viewpoint on the web diagrams...Go to contribution page
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11/12/2014, 10:40
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11/12/2014, 14:25
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