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Search for high-mass dilepton resonances in pp collisions at √s = 8 TeV with the ATLAS detector

Physical Review D - Particles, Fields, Gravitation and Cosmology 90:5 (2014)

Authors:

G Aad, B Abbott, J Abdallah, S Abdel Khalek, O Abdinov, R Aben, B Abi, M Abolins, OS Abouzeid, H Abramowicz, H Abreu, R Abreu, Y Abulaiti, BS Acharya, L Adamczyk, DL Adams, J Adelman, S Adomeit, T Adye, T Agatonovic-Jovin, JA Aguilar-Saavedra, M Agustoni, SP Ahlen, F Ahmadov, G Aielli, H Akerstedt, TPA Åkesson, G Akimoto, AV Akimov, GL Alberghi, J Albert, S Albrand, MJ Alconada Verzini, M Aleksa, IN Aleksandrov, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, G Alimonti, L Alio, J Alison, BMM Allbrooke, K Allen, LJ Allison, PP Allport, J Almond, A Aloisio, A Alonso, F Alonso, C Alpigiani, A Altheimer, B Alvarez Gonzalez, MG Alviggi, K Amako, Y Amaral Coutinho, C Amelung, D Amidei, 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, I Angelozzi, P Anger, A Angerami, F Anghinolfi, AV Anisenkov, N Anjos, A Annovi, A Antonaki, M Antonelli, A Antonov

Abstract:

© 2014 CERN, for the ATLAS Collaboration.The ATLAS detector at the Large Hadron Collider is used to search for high-mass resonances decaying to dielectron or dimuon final states. Results are presented from an analysis of proton-proton (pp) collisions at a center-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3fb-1 in the dimuon channel. A narrow resonance with Standard Model Z couplings to fermions is excluded at 95% confidence level for masses less than 2.79 TeV in the dielectron channel, 2.53 TeV in the dimuon channel, and 2.90 TeV in the two channels combined. Limits on other model interpretations are also presented, including a grand-unification model based on the E6 gauge group, Z∗ bosons, minimal Z′ models, a spin-2 graviton excitation from Randall-Sundrum models, quantum black holes, and a minimal walking technicolor model with a composite Higgs boson.
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The Visible and Infrared Survey Telescope for Astronomy (VISTA): Design, Technical Overview and Performance

(2014)

Authors:

Will Sutherland, Jim Emerson, Gavin Dalton, Eli Atad-Ettedgui, Steven Beard, Richard Bennett, Naidu Bezawada, Andrew Born, Martin Caldwell, Paul Clark, Simon Craig, David Henry, Paul Jeffers, Bryan Little, Alistair McPherson, John Murray, Malcolm Stewart, Brian Stobie, David Terrett, Kim Ward, Martin Whalley, Guy Woodhouse
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CONNECTION BETWEEN DYNAMICALLY DERIVED INITIAL MASS FUNCTION NORMALIZATION AND STELLAR POPULATION PARAMETERS

The Astrophysical Journal Letters American Astronomical Society 792:2 (2014) l37

Authors:

Richard M McDermid, Michele Cappellari, Katherine Alatalo, Estelle Bayet, Leo Blitz, Maxime Bois, Frédéric Bournaud, Martin Bureau, Alison F Crocker, Roger L Davies, Timothy A Davis, PT de Zeeuw, Pierre-Alain Duc, Eric Emsellem, Sadegh Khochfar, Davor Krajnović, Harald Kuntschner, Raffaella Morganti, Thorsten Naab, Tom Oosterloo, Marc Sarzi, Nicholas Scott, Paolo Serra, Anne-Marie Weijmans, Lisa M Young
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Measurement of the Higgs boson mass from the H →γγ and H →ZZ∗ →4channels in pp collisions at center-of-mass energies of 7 and 8 TeV with the atlas detector measurement of the Higgs boson mass from the ... G. AAD et al.

Physical Review D - Particles, Fields, Gravitation and Cosmology 90:5 (2014)

Authors:

G Aad, BK Abbott, JM Abdallah, S Abdel Khalek, OB Abdinov, R Aben, BA Abi, SH Abidi, MA Abolins, OS AbouZeid, H Abramowicz, H Abreu, R Abreu, Y Abulaiti, BS Acharya, L Adamczyk, DL Adams, J Adelman, S Adomeit, TJ Adye, T Agatonovic-Jovin, JA Aguilar-Saavedra, M Agustoni, SP Ahlen, F Ahmadov, G Aielli, HO Åkerstedt, TPA Åkesson, G Akimoto, AV Akimov, GL Alberghi, JB Albert, S Albrand, MJ Alconada Verzini, M Aleksa, IN Aleksandrov, C Alexa, G Alexander, G Alexandre, TA Alexopoulos, M Alhroob, G Alimonti, L Alio, JM Alison, BMM Allbrooke, LJ Allison, PP Allport, JE Almond, A Aloisio, A Alonso, F Alonso, C Alpigiani, AD Altheimer, B Álvarez González, MG Alviggi, K Amako, Y Amaral Coutinho, C Amelung, D Amidei, SP Amor Dos Santos, AEA Amorim, S Amoroso, N Amram, G Amundsen, C Anastopoulos, LS Ancu, N Andari, TR Andeen, CF Anders, G Anders, KJ Anderson, A Andreazza, V Andrei, XS Anduaga, S Angelidakis, I Angelozzi, P Anger, A Angerami, F Anghinolfi, AV Anisenkov, N Anjos, A Annovi, A Antonaki, M Antonelli, AA Antonov, J Antoš, F Anulli, M Aoki, L Aperio Bella, R Apolle, G Arabidze, I Aracena, Y Arai, JP Araque, ATH Arce, JF Arguin, S Argyropoulos, M Arik, AJ Armbruster

Abstract:

© 2014 CERN, for the ATLAS Collaboration. An improved measurement of the mass of the Higgs boson is derived from a combined fit to the reconstructed invariant mass spectra of the decay channels H→γγ and H→ZZ∗→4. The analysis uses the pp collision data sample recorded by the ATLAS experiment at the CERN Large Hadron Collider at center-of-mass energies of 7 TeV and 8 TeV, corresponding to an integrated luminosity of 25fb-1. The measured value of the Higgs boson mass is mH=125.36±0.37(stat)±0.18(syst)GeV. This result is based on improved energy-scale calibrations for photons, electrons, and muons as well as other analysis improvements, and supersedes the previous result from ATLAS. Upper limits on the total width of the Higgs boson are derived from fits to the invariant mass spectra of the H→γγ and H→ZZ∗→4 decay channels.
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A neural network clustering algorithm for the ATLAS silicon pixel detector

Journal of Instrumentation IOP Publishing 9:09 (2014) p09009-p09009
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