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Measurement of χc1and χc2production with √s = 7 TeV pp collisions at ATLAS

Journal of High Energy Physics 2014:7 (2014)

Authors:

G Aad, T Abajyan, B Abbott, J Abdallah, S Abdel Khalek, O Abdinov, R Aben, B Abi, M Abolins, OS Abouzeid, H Abramowicz, H Abreu, Y Abulaiti, BS Acharya, L Adamczyk, DL Adams, TN Addy, J Adelman, S Adomeit, T Adye, S Aefsky, T Agatonovic-Jovin, JA Aguilar-Saavedra, M Agustoni, SP Ahlen, A Ahmad, F Ahmadov, G Aielli, TPA Åkesson, G Akimoto, AV Akimov, MA Alam, J Albert, S Albrand, MJ Alconada Verzini, M Aleksa, IN Aleksandrov, F Alessandria, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, M Aliev, G Alimonti, L Alio, J Alison, BMM Allbrooke, LJ Allison, PP Allport, SE Allwood-Spiers, J Almond, A Aloisio, R Alon, A Alonso, F Alonso, A Altheimer, B Alvarez Gonzalez, MG Alviggi, K Amako, Y Amaral Coutinho, C Amelung, VV Ammosov, SP Amor Dos Santos, A Amorim, S Amoroso, N Amram, G Amundsen, C Anastopoulos, LS Ancu, N Andari, T Andeen, CF Anders, G Anders, KJ Anderson, A Andreazza, V Andrei, XS Anduaga, S Angelidakis, P Anger, A Angerami, F Anghinolfi, AV Anisenkov, N Anjos, A Annovi, A Antonaki, M Antonelli, A Antonov, J Antos, F Anulli, M Aoki, L Aperio Bella, R Apolle, G Arabidze, I Aracena, Y Arai, ATH Arce, S Arfaoui, JF Arguin, S Argyropoulos

Abstract:

The prompt and non-prompt production cross-sections for the χc1and χc2charmonium states are measured in pp collisions at √s = 7TeV with the ATLAS detector at the LHC using 4.5 fb−1of integrated luminosity. The χcstates are reconstructed through the radiative decay χc→ J/ψγ (with J/ψ → μ+μ−) where photons are reconstructed from γ → e+e− conversions. The production rate of the χc2state relative to the χc1state is measured for prompt and non-prompt χcas a function of J/ψ transverse momentum. The prompt χccross-sections are combined with existing measurements of prompt J/ψ production to derive the fraction of prompt J/ψ produced in feed-down from χcdecays. The fractions of χc1and χc2produced in b-hadron decays are also measured.
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Modelling and testing the x-ray performance of CCD and CMOS APS detectors using numerical finite element simulations

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 9154 (2014) 91541a-91541a-10

Authors:

Daniel P Weatherill, Konstantin D Stefanov, Thomas A Greig, Andrew D Holland
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HARMONI: the first light integral field spectrograph for the E-ELT

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 9147 (2014) 914725-914725-11

Authors:

Niranjan A Thatte, Fraser Clarke, Ian Bryson, Hermine Schnetler, Matthias Tecza, Roland M Bacon, Alban Remillieux, Evencio Mediavilla, José Miguel Herreros Linares, Santiago Arribas, Christopher J Evans, David W Lunney, Thierry Fusco, Kieran O'Brien, Ian A Tosh, Derek J Ives, Gert Finger, Ryan Houghton, Roger L Davies, James D Lynn, Jamie R Allen, Simon D Zieleniewski, Sarah Kendrew, Vanessa Ferraro-Wood, Arlette Pécontal-Rousset, Johan Kosmalski, Johan Richard, Aurelien Jarno, Angus M Gallie, David M Montgomery, David Henry, Gérard Zins, David Freeman, Begona García-Lorenzo, Luis F Rodríguez-Ramos, Jorge SC Revuelta, Elvio Hernandez Suarez, Alberto Bueno-Bueno, José Vincente Gigante-Ripoll, Adolfo Garcia, Kjetil Dohlen, Benoît Neichel
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A connection between accretion state and $\textit{Fe K absorption}$ in an accreting neutron star: black hole-like soft state winds?

(2014)

Authors:

G Ponti, T Muñoz-Darias, RP Fender
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Lunar occultation of the diffuse radio sky: LOFAR measurements between 35 and 80 MHz

(2014)

Authors:

HK Vedantham, LVE Koopmans, AG de Bruyn, SJ Wijnholds, M Brentjens, FB Abdalla, KMB Asad, G Bernardi, S Bus, E Chapman, B Ciardi, S Daiboo, ER Fernandez, A Ghosh, G Harker, V Jelic, H Jensen, S Kazemi, P Lambropoulos, O Martinez-Rubi, G Mellema, M Mevius, AR Offringa, VN Pandey, AH Patil, RM Thomas, V Veligatla, S Yatawatta, S Zaroubi, J Anderson, A Asgekar, ME Bell, MJ Bentum, P Best, A Bonafede, F Breitling, J Broderick, M Brüggen, HR Butcher, A Corstanje, F de Gasperin, E de Geus, A Deller, S Duscha, J Eislöffel, D Engels, H Falcke, RA Fallows, R Fender, C Ferrari, W Frieswijk, MA Garrett, J Grießmeier, AW Gunst, TE Hassall, G Heald, M Hoeft, J Hörandel, M Iacobelli, E Juette, VI Kondratiev, M Kuniyoshi, G Kuper, G Mann, S Markoff, R McFadden, D McKay-Bukowski, DD Mulcahy, H Munk, A Nelles, MJ Norden, E Orru, M Pandey-Pommier, R Pizzo, AG Polatidis, W Reich, A Renting, H Röttgering, D Schwarz, A Shulevski, O Smirnov, BW Stappers, M Steinmetz, J Swinbank, M Tagger, Y Tang, C Tasse, S ter Veen, S Thoudam, C Toribio, C vocks, MW Wise, O Wucknitz, P Zarka
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