"The European Physical Journal C"

Chekanov, S.;Derrick, M.;Magill, S.;Musgrave, B.;Nicholass, D.;Repond, J.;Yoshida, R.;Mattingly, M. C. K.;Antonioli, P.;Bari, G.;Bellagamba, L.;Boscherini, D.;Bruni, A.;Bruni, G.;Cindolo, F.;Corradi, M.;Iacobucci, G.;Margotti, A.;Nania, R.;Polini, A.;Antonelli, S.;Basile, M.;Bindi, M.;Cifarelli, L.;Contin, A.;De Pasquale, S.;Sartorelli, G.;Zichichi, A.;Bartsch, D.;Brock, I.;Hartmann, H.;Hilger, E.;Jakob, H. P.;Jüngst, M.;Nuncio-Quiroz, A. E.;Paul, E.;Samson, U.;Schönberg, V.;Shehzadi, R.;Wlasenko, M.;Brook, N. H.;Heath, G. P.;Morris, J. D.;Kaur, M.;Kaur, P.;Singh, I.;Capua, M.;Fazio, S.;Mastroberardino, A.;Schioppa, M.;Susinno, G.;Tassi, E.;Kim, J. Y.;Ibrahim, Z. A.;Idris, F. Mohamad;Kamaluddin, B.;Abdullah, W. A. T. Wan;Ning, Y.;Ren, Z.;Sciulli, F.;Chwastowski, J.;Eskreys, A.;Figiel, J.;Galas, A.;Olkiewicz, K.;Pawlik, B.;Stopa, P.;Zawiejski, L.;Adamczyk, L.;Bołd, T.;Grabowska-Bołd, I.;Kisielewska, D.;Łukasik, J.;Przybycień, M.;Suszycki, L.;Kotański, A.;Słomiński, W.;Behnke, O.;Behrens, U.;Blohm, C.;Bonato, A.;Borras, K.;Bot, D.;Ciesielski, R.;Coppola, N.;Fang, S.;Fourletova, J.;Geiser, A.;Göttlicher, P.;Grebenyuk, J.;Gregor, I.;Haas, T.;Hain, W.;Hüttmann, A.;Januschek, F.;Kahle, B.;Katkov, I. I.;Klein, U.;Kötz, U.;Kowalski, H.;Lisovyi, M.;Lobodzinska, E.;Löhr, B.;Mankel, R.;Melzer-Pellmann, I.-A.;Miglioranzi, S.;Montanari, A.;Namsoo, T.;Notz, D.;Parenti, A.;Rinaldi, L.;Roloff, P.;Rubinsky, I.;Schneekloth, U.;Spiridonov, A.;Szuba, D.;Szuba, J.;Theedt, T.;Ukleja, J.;Wolf, G.;Wrona, K.;Molina, A. G. Yagües;Youngman, C.;Zeuner, W.;Drugakov, V.;Lohmann, W.;Schlenstedt, S.;Barbagli, G.;Gallo, E.;Pelfer, P. G.;Bamberger, A.;Dobur, D.;Karstens, F.;Vlasov, N. N.;Bussey, P. J.;Doyle, A. T.;Dunne, W.;Forrest, M.;Rosin, M.;Saxon, D. H.;Skillicorn, I. O.;Gialas, I.;Papageorgiu, K.;Holm, U.;Klanner, R.;Lohrmann, E.;Perrey, H.;Schleper, P.;Schörner-Sadenius, T.;Sztuk, J.;Stadie, H.;Turcato, M.;Foudas, C.;Fry, C.;Long, K. R.;Tapper, A. D.;Matsumoto, T.;Nagano, K.;Tokushuku, K.;Yamada, S.;Yamazaki, Y.;Barakbaev, A. N.;Boos, E. G.;Pokrovskiy, N. S.;Zhautykov, B. O.;Aushev, V.;Bachynska, O.;Borodin, M.;Kadenko, I.;Kozulia, A.;Libov, V.;Lontkovskyi, D.;Makarenko, I.;Sorokin, Iu.;Verbytskyi, A.;Volynets, O.;Son, D.;de Favereau, J.;Piotrzkowski, K.;Barreiro, F.;Glasman, C.;Jimenez, M.;Labarga, L.;del Peso, J.;Ron, E.;Soares, M.;Terrón, J.;Uribe-Estrada, C.;Zambrana, M.;Corriveau, F.;Liu, C.;Schwartz, J.;Walsh, R.;Zhou, C.;Tsurugai, T.;Antonov, A.;Dolgoshein, B. A.;Gladkov, D.;Sosnovtsev, V.;Stifutkin, A.;Suchkov, S.;Dementiev, R. K.;Ermolov, P. F.;Gladilin, L. K.;Golubkov, Yu. A.;Khein, L. A.;Korzhavina, I. A.;Kuzmin, V. A.;Levchenko, B. B.;Lukina, O. Yu.;Proskuryakov, A. S.;Shcheglova, L. M.;Zotkin, D. S.;Abt, I.;Caldwell, A.;Kollar, D.;Reisert, B.;Schmidke, W. B.;Grigorescu, G.;Keramidas, A.;Koffeman, E.;Kooijman, P.;Pellegrino, A.;Tiecke, H.;Vázquez, M.;Wiggers, L.;Brümmer, N.;Bylsma, B.;Durkin, L. S.;Lee, A.;Ling, T. Y.;Allfrey, P. D.;Bell, M. A.;Cooper-Sarkar, A. M.;Devenish, R. C. E.;Ferrando, J.;Foster, B.;Gwenlan, C.;Horton, K.;Oliver, K.;Robertson, A.;Walczak, R.;Bertolin, A.;Dal Corso, F.;Dusini, S.;Longhin, A.;Stanco, L.;Bellan, P.;Brugnera, R.;Carlin, R.;Garfagnini, A.;Limentani, S.;Oh, B. Y.;Raval, A.;Whitmore, J. J.;Iga, Y.;D’Agostini, G.;Marini, G.;Nigro, A.;Cole, J. E.;Hart, J. C.;Abramowicz, H.;Ingbir, R.;Kananov, S.;Levy, A.;Stern, A.;Kuze, M.;Maeda, J.;Hori, R.;Kagawa, S.;Okazaki, N.;Shimizu, S.;Tawara, T.;Hamatsu, R.;Kaji, H.;Kitamura, S.;Ota, O.;Ri, Y. D.;Costa, M.;Ferrero, M. I.;Monaco, V.;Sacchi, R.;Sola, V.;Solano, A.;Arneodo, M.;Ruspa, M.;Fourletov, S.;Martin, J. F.;Stewart, T. P.;Boutle, S. K.;Butterworth, J. M.;Jones, T. W.;Loizides, J. H.;Wing, M.;Brzozowska, B.;Ciborowski, J.;Grzelak, G.;Kulinski, P.;Łużniak, P.;Malka, J.;Nowak, R. J.;Pawlak, J. M.;Perlanski, W.;Tymieniecka, T.;Żarnecki, A. F.;Adamus, M.;Plucinski, P.;Ukleja, A.;Eisenberg, Y.;Hochman, D.;Karshon, U.;Brownson, E.;Reeder, D. D.;Savin, A. A.;Smith, W. H.;Wolfe, H.;Bhadra, S.;Catterall, C. D.;Cui, Y.;Hartner, G.;Menary, S.;Noor, U.;Standage, J.;Whyte, J.

doi: 10.1140/epjc/s10052-009-1055-6pmid: N/A

Abstract Measurements of the neutral current cross sections for deep inelastic scattering in e − p collisions at HERA with a longitudinally polarised electron beam are presented. The single-differential cross-sections d σ/dQ 2, d σ/dx and d σ/dy and the double-differential cross sections in Q 2 and x are measured in the kinematic region y<0.9 and Q 2>185 GeV 2 for both positively and negatively polarised electron beams and for each polarisation state separately. The measurements are based on an integrated luminosity of 169.9 pb −1 taken with the ZEUS detector in 2005 and 2006 at a centre-of-mass energy of 318 GeV. The structure functions \(x\tilde{F_{3}}\) and xF γZ3 are determined by combining the e − p results presented in this paper with previously measured e + p neutral current data. The asymmetry parameter A − is used to demonstrate the parity violating effects of electroweak interactions at large spacelike photon virtuality. The measurements agree well with the predictions of the Standard Model.

Airapetian, A.;Akopov, N.;Akopov, Z.;Andrus, A.;Aschenauer, E. C.;Augustyniak, W.;Avakian, R.;Avetissian, A.;Avetissian, E.;Belostotski, S.;Bianchi, N.;Blok, H. P.;Böttcher, H.;Bonomo, C.;Borissov, A.;Brüll, A.;Bryzgalov, V.;Capiluppi, M.;Capitani, G. P.;Cisbani, E.;Ciullo, G.;

Bolshakova, A.;Boyko, I.;Chelkov, G.;Dedovitch, D.;Elagin, A.;Gostkin, M.;Grishin, S.;Guskov, A.;Kroumchtein, Z.;Nefedov, Yu.;Nikolaev, K.;Zhemchugov, A.;Dydak, F.;Wotschack, J.;De Min, A.;Ammosov, V.;Gapienko, V.;Koreshev, V.;Semak, A.;Sviridov, Yu.;Usenko, E.;

Derbin, A. V.;Egorov, A. I.;Mitropol’sky, I. A.;Muratova, V. N.;Semenov, D. A.;Unzhakov, E. V.

doi: 10.1140/epjc/s10052-009-1095-ypmid: N/A

Abstract A search for resonant absorption of 14.4 keV solar axions by a 57Fe target was performed. The Si(Li) detector placed inside the low-background setup was used to detect the γ-quanta appearing in the deexcitation of the 14.4 keV nuclear level: A+57Fe→57Fe*→57Fe+γ. The new upper limit for the hadronic axion mass has been obtained of m A ≤159 eV (95% c.l.) (S=0.5, z=0.56).

Alkofer, R.;Huber, M. Q.;Schwenzer, K.

doi: 10.1140/epjc/s10052-009-1066-3pmid: N/A

Abstract Analytic solutions for the three-gluon and ghost–gluon vertices in Landau gauge Yang–Mills theory at low momenta are presented in terms of hypergeometric series. They do not only show the expected scaling behavior but also additional kinematic divergences when only one momentum goes to zero. These singularities, which have also been proposed previously, induce a strong dependence on the kinematics in many dressing functions. The results are generalized to two and three dimensions and a range of values for the ghost propagator’s infrared exponent κ.

Park, I. Y.

doi: 10.1140/epjc/s10052-009-1065-4pmid: N/A

Abstract We analyze one-loop scattering amplitudes of the massless states on a stack of D3-branes. We use the vertex operators that have been obtained in the direct open string analysis developed in arXiv:0708.3452. The method does not have the obstacle of the D9 computation which is associated with the appearance of an ε-tensor. The divergence structure is not the same as the D9-brane case. What makes the analysis deviate from the D9-brane case is that the momenta of the states have non-zero components only along the brane directions. We ponder on the possibility that the one-loop divergence may be canceled by adding additional vertex operators at the tree level. We anticipate that they will be “exponentiated” to the free string action, with the resulting action to constitute a non-linear sigma model of the D-brane/AdS geometry.

De Leo, Stefano;Rotelli, Pietro

doi: 10.1140/epjc/s10052-009-1059-2pmid: N/A

Abstract We develop the potential scattering of a spinor within the context of perturbation field theory. As an application, we reproduce, up to second order in the potential, the diffusion results for a potential barrier of quantum mechanics. An immediate consequence is a simple generalization to arbitrary potential forms, a feature not possible in quantum mechanics.