Hassan E. Abdalla, Attila Abramowski, Felix A. Aharonian, Faiçal Ait Benkhali, A. G. Akhperjanian, Ekrem Oǧuzhan Angüner, M. Arrieta, Pierre Aubert, Michael Backes, Arnim Balzer, Michelle Barnard, Yvonne Becherini, Julia Becker Tjus, David Berge, Sabrina Bernhard, K. Bernlöhr, E. Birsin, R. Blackwell, Markus Bottcher, Catherine Boisson, J. Bolmont, Pol Bordas, Johan Bregeon, Francois Brun, Pierre Brun, Mark Bryan, Tomasz Bulik, M. Capasso, John Carr, Sabrina Casanova, N. Chakraborty, R. Chalme-Calvet, Ryan C. G. Chaves, Andrew Chen, J. Chevalier, M. Chretien, Sergio Colafrancesco, Gabriele Cologna, B. Condon, Jan Conrad, C. Couturier, Y. Cui, I. D. Davids, B. Degrange, Christoph Deil, P. deWilt, Arache Djannati-Atai, Wilfried Domainko, Axel Donath, Guillaume Dubus, Kate Dutson, J. Dyks, M. Dyrda, T. Edwards, Kathrin Egberts, P. Eger, J. -P. Ernenwein, S. Eschbach, C. Farnier, Stuart Fegan, M. V. Fernandes, A. Fiasson, G. Fontaine, A. Foerster, S. Funk, Matthias Füßling, Stefano Gabici, M. Gajdus, Y. A. Gallant, T. Garrigoux, Gianluca Giavitto, B. Giebels, J. F. Glicenstein, Daniel Gottschall, A. Goyal, M. -H. Grondin, M. Grudzinska, Daniela Hadasch, J. Hahn, J. Hawkes, G. Heinzelmann, Gilles Henri, G. Hermann, Olivier Hervet, A. Hillert, James Anthony Hinton, Werner Hofmann, Clemens Hoischen, M. Holler, D. Horns, Alex Ivascenko, A. Jacholkowska, Marek Jamrozy, M. Janiak, D. Jankowsky, Felix Jankowsky, M. Jingo, Tobias Jogler, Lea Jouvin, Ira Jung-Richardt, M. A. Kastendieck, Krzysztof Katarzynski, Uli Katz, D. Kerszberg, B. Khelifi, M. Kieffer, J. King, S. Klepser, Dmitry Klochkov, W. Kluzniak, D. Kolitzus, Nu. Komin, K. Kosack, S. Krakau, Michael Kraus, F. Krayzel, P. P. Kruger, H. Laffon, G. Lamanna, Jeanie Lau, J. -P. Lees, J. Lefaucheur, V. Lefranc, A. Lemiere, M. Lemoine-Goumard, J. -P. Lenain, Eva Leser, Thomas Lohse, M. Lorentz, R. Lui, Iryna Lypova, Vincent Marandon, Alexandre Marcowith, C. Mariaud, R. Marx, G. Maurin, N. Maxted, Michael Mayer, Petrus Johannes Meintjes, U. Menzler, Manuel Meyer, A. M. W. Mitchell, R. Moderski, M. Mohamed, K. Mora, Emmanuel Moulin, T. Murach, Mathieu de Naurois, F. Niederwanger, J. Niemiec, L. Oakes, Hirokazu Odaka, Stefan Ohm, S. Oettl, M. Ostrowski, I. Oya, Marco Padovani, M. Panter, R. D. Parsons, M. Paz Arribas, N. W. Pekeur, G. Pelletier, P. -O. Petrucci, B. Peyaud, S. Pita, Helen Poon, Dmitry Prokhorov, Heike Prokoph, Gerd Puehlhofer, Michael Punch, Andreas Quirrenbach, S. Raab, Anita Reimer, Olaf Reimer, M. Renaud, R. de los Reyes, Frank Rieger, Carlo Romoli, S. Rosier-Lees, G. Rowell, B. Rudak, C. B. Rulten, V. Sahakian, David Salek, David A. Sanchez, Andrea Santangelo, Manami Sasaki, Reinhard Schlickeiser, F. Schussler, Andreas Schulz, U. Schwanke, S. Schwemmer, A. S. Seyffert, N. Shafi, R. Simoni, H. Sol, Felix Spanier, G. Spengler, F. Spiess, Lukasz Stawarz, R. Steenkamp, Christian Stegmann, F. Stinzing, K. Stycz, Iurii Sushch, J. -P. Tavernet, T. Tavernier, A. M. Taylor, R. Terrier, Martin Tluczykont, C. Trichard, R. Tuffs, Johan van der Walt, Christopher van Eldik, Brian van Soelen, Georges Vasileiadis, J. Veh, C. Venter, A. Viana, P. Vincent, Jacco Vink, F. Voisin, Heinrich J. Voelk, Thomas Vuillaume, Z. Wadiasingh, Stefan J. Wagner, P. Wagner, R. M. Wagner, R. White, Alicja Wierzcholska, P. Willmann, A. Woernlein, Denis Wouters, R. Yang, Victor Zabalza, D. Zaborov, M. Zacharias, A. A. Zdziarski, Andreas Zech, F. Zefi, A. Ziegler, Natalia Zywucka

• The inner region of the Milky Way halo harbors a large amount of dark matter (DM). Given its proximity, it is one of the most promising targets to look for DM. We report on a search for the annihilations of DM particles using gamma-ray observations towards the inner 300 pc of the Milky Way, with the H.E.S.S. array of ground-based Cherenkov telescopes. The analysis is based on a 2D maximum likelihood method using Galactic Center (GC) data accumulated by H.E.S.S. over the last 10 years (2004-2014), and does not show any significant gamma-ray signal above background. Assuming Einasto and Navarro-Frenk-White DM density profiles at the GC, we derive upper limits on the annihilation cross section <sigma nu >. These constraints are the strongest obtained so far in the TeV DM mass range and improve upon previous limits by a factor 5. For the Einasto profile, the constraints reach <sigma nu > values of 6 x 10(-26) cm(3) s(-1) in the W+W- channel for a DM particle mass of 1.5 TeV, and 2 x 10(-26) cm(3) s(-1) in the tau(+)tau(-) channel for a 1The inner region of the Milky Way halo harbors a large amount of dark matter (DM). Given its proximity, it is one of the most promising targets to look for DM. We report on a search for the annihilations of DM particles using gamma-ray observations towards the inner 300 pc of the Milky Way, with the H.E.S.S. array of ground-based Cherenkov telescopes. The analysis is based on a 2D maximum likelihood method using Galactic Center (GC) data accumulated by H.E.S.S. over the last 10 years (2004-2014), and does not show any significant gamma-ray signal above background. Assuming Einasto and Navarro-Frenk-White DM density profiles at the GC, we derive upper limits on the annihilation cross section <sigma nu >. These constraints are the strongest obtained so far in the TeV DM mass range and improve upon previous limits by a factor 5. For the Einasto profile, the constraints reach <sigma nu > values of 6 x 10(-26) cm(3) s(-1) in the W+W- channel for a DM particle mass of 1.5 TeV, and 2 x 10(-26) cm(3) s(-1) in the tau(+)tau(-) channel for a 1 TeV mass. For the first time, ground-based gamma-ray observations have reached sufficient sensitivity to probe <sigma nu > values expected from the thermal relic density for TeV DM particles.…