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Dynamics of isolated-photon plus jet production in pp collisions at s=7 TeV with the ATLAS detector

Nuclear Physics B 875:3 (2013) 483-535

Authors:

G Aad, T Abajyan, B Abbott, J Abdallah, S Abdel Khalek, AA Abdelalim, 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, F Ahles, A Ahmad, M Ahsan, G Aielli, TPA A kesson, 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, 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, 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

Abstract:

The dynamics of isolated-photon plus jet production in pp collisions at a centre-of-mass energy of 7 TeV has been studied with the ATLAS detector at the LHC using an integrated luminosity of 37 pb-1. Measurements of isolated-photon plus jet bin-averaged cross sections are presented as functions of photon transverse energy, jet transverse momentum and jet rapidity. In addition, the bin-averaged cross sections as functions of the difference between the azimuthal angles of the photon and the jet, the photon-jet invariant mass and the scattering angle in the photon-jet centre-of-mass frame have been measured. Next-to-leading-order QCD calculations are compared to the measurements and provide a good description of the data, except for the case of the azimuthal opening angle. © 2013 CERN.
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Search for new phenomena in final states with large jet multiplicities and missing transverse momentum at root s = 8 TeV proton-proton collisions using the ATLAS experiment

Journal of High Energy Physics Springer Berlin Heidelberg 10:1 (2013)

Authors:

G Aad, T Abajyan, B Abbott, J Abdallah, 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

Abstract:

A search is presented for new particles decaying to large numbers (7 or more) of jets, with missing transverse momentum and no isolated electrons or muons. This analysis uses 20.3 fb−1 of pp collision data at s√=8s=8 TeV collected by the ATLAS experiment at the Large Hadron Collider. The sensitivity of the search is enhanced by considering the number of b-tagged jets and the scalar sum of masses of large-radius jets in an event. No evidence is found for physics beyond the Standard Model. The results are interpreted in the context of various simplified supersymmetry-inspired models where gluinos are pair produced, as well as an mSUGRA/CMSSM model.
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Search for new phenomena in final states with large jet multiplicities and missing transverse momentum at sqrt(s)=8 TeV proton-proton collisions using the ATLAS experiment

The Journal of High Energy Physics 2013:10 (2013) 130

Authors:

G Aad, T Abajyan, B Abbott, J Abdallah, S Abdel Khalek, O Abdinov, R Aben, B Abi, M Abolins, OS AbouZeid, H Abramowicz
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Slowly fading super-luminous supernovae that are not pair-instability explosions

Nature Springer Nature 502:7471 (2013) 346-349

Authors:

M Nicholl, SJ Smartt, A Jerkstrand, C Inserra, M McCrum, R Kotak, M Fraser, D Wright, T-W Chen, K Smith, DR Young, SA Sim, S Valenti, DA Howell, F Bresolin, RP Kudritzki, JL Tonry, ME Huber, A Rest, A Pastorello, L Tomasella, E Cappellaro, S Benetti, S Mattila, E Kankare, T Kangas, G Leloudas, J Sollerman, F Taddia, E Berger, R Chornock, G Narayan, CW Stubbs, RJ Foley, R Lunnan, A Soderberg, N Sanders, D Milisavljevic, R Margutti, RP Kirshner, N Elias-Rosa, A Morales-Garoffolo, S Taubenberger, MT Botticella, S Gezari, Y Urata, S Rodney, AG Riess, D Scolnic, WM Wood-Vasey, WS Burgett, K Chambers, HA Flewelling, EA Magnier, N Kaiser, N Metcalfe, J Morgan, PA Price, W Sweeney, C Waters
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Slowly fading super-luminous supernovae that are not pair-instability explosions

(2013)

Authors:

M Nicholl, SJ Smartt, A Jerkstrand, C Inserra, M McCrum, R Kotak, M Fraser, D Wright, T-W Chen, K Smith, DR Young, SA Sim, S Valenti, DA Howell, F Bresolin, RP Kudritzki, JL Tonry, ME Huber, A Rest, A Pastorello, L Tomasella, E Cappellaro, S Benetti, S Mattila, E Kankare, T Kangas, G Leloudas, J Sollerman, F Taddia, E Berger, R Chornock, G Narayan, CW Stubbs, RJ Foley, R Lunnan, A Soderberg, N Sanders, D Milisavljevic, R Margutti, RP Kirshner, N Elias-Rosa, A Morales-Garoffolo, S Taubenberger, MT Botticella, S Gezari, Y Urata, S Rodney, AG Riess, D Scolnic, WM Wood-Vasey, WS Burgett, K Chambers, HA Flewelling, EA Magnier, N Kaiser, N Metcalfe, J Morgan, PA Price, W Sweeney, C Waters
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