Inclusive hadron and photon production at LHC in dipole momentum space

Using a momentum space model for the dipole scattering amplitude we present an analysis of the saturation effects at LHC energies, describing the data on proton-proton and proton-lead collisions. The model is based on the asymptotic solutions of the Balitsky-Kovchegov equation, being ideal in the saturation domain where the target wave function has a high occupation number. We also make predictions for the nuclear modification ratios on charged hadron and prompt photon production in the forward region, where the high parton density effects are important.Comment: New section added and typos corrected. To be published in PR

Mamoeiro.

A espécie Carica papaya L. é o mamoeiro mais cultivado em todo mundo. É uma planta herbácea, tipicamente tropical, cujo centro de origem é, muito provavelmente, o Noroeste da América do Sul, vertente oriental dos Andes, ou mais precisamente, a Bacia Amazônica Superior, onde sua diversidade genética é máxima. O Brasil é o primeiro produtor mundial de mamão, situando-se entre os principais países exportadores, principalmente para o mercado europeu. A produtividade média nacional é da ordem de 40 t/ha para as variedades do grupo Solo e de 60 t/ha para as variedades do grupo Formosa. É uma fruteira cultivada em quase todo o território brasileiro, merecendo destaque os estados da Bahia, primeiro produtor, Espírito Santo e Ceará, segundo e terceiro produtores, respectivamente, responsáveis por cerca de 90% da produção nacional. O mamoeiro produz plantas masculinas, femininas e hermafroditas, que originam frutos de formatos distintos. De uma forma geral, as variedades de mamoeiros mais exploradas no Brasil são classificadas em dois grupos: Solo (ex: 'Sunrise Solo', Improved Sunrise Solo cv. 72/12', 'Baixinho de Santa Amália e 'Sunrise Golden'), mais utilizadas para a exportação, e Formosa (ex: 'Tainung nº 1', 'Tainung nº 2 e 'Caliman 1'), preferidas para agroindústria e hotelaria

Unintegrated parton distributions in nuclei

We study how unintegrated parton distributions in nuclei can be calculated from the corresponding integrated partons using the EPS09 parametrization. The role of nuclear effects is presented in terms of the ratio $R^A=\text{uPDF}^A/A\cdot \text{PDF}^N$ for both large and small $x$ domains.Comment: 9 pages, 4 figure

Scaling Invariance in a Time-Dependent Elliptical Billiard

We study some dynamical properties of a classical time-dependent elliptical billiard. We consider periodically moving boundary and collisions between the particle and the boundary are assumed to be elastic. Our results confirm that although the static elliptical billiard is an integrable system, after to introduce time-dependent perturbation on the boundary the unlimited energy growth is observed. The behaviour of the average velocity is described using scaling arguments

Nonequilibrium Probabilistic Dynamics of the Logistic Map at the Edge of Chaos

We consider nonequilibrium probabilistic dynamics in logistic-like maps $x_{t+1}=1-a|x_t|^z$, $(z>1)$ at their chaos threshold: We first introduce many initial conditions within one among $W>>1$ intervals partitioning the phase space and focus on the unique value $q_{sen}<1$ for which the entropic form $S_q \equiv \frac{1-\sum_{i=1}^{W} p_i^q}{q-1}$ {\it linearly} increases with time. We then verify that $S_{q_{sen}}(t) - S_{q_{sen}}(\infty)$ vanishes like $t^{-1/[q_{rel}(W)-1]}$ [$q_{rel}(W)>1$]. We finally exhibit a new finite-size scaling, $q_{rel}(\infty) - q_{rel}(W) \propto W^{-|q_{sen}|}$. This establishes quantitatively, for the first time, a long pursued relation between sensitivity to the initial conditions and relaxation, concepts which play central roles in nonextensive statistical mechanics.Comment: Final version with new Title and small modifications. REVTeX, 8 pages and 4 eps figure