Professor Claire Gwenlan: Publications

Search for a fermiophobic Higgs boson in the diphoton decay channel with the ATLAS detector

European Physical Journal C 72:9 (2012) 1-18

Authors:

G Aad, G Aad, B Abbott, B Abbott, J Abdallah, J Abdallah, S Abdel Khalek, S Abdel Khalek, AA Abdelalim, AA Abdelalim, O Abdinov, O Abdinov, B Abi, B Abi, M Abolins, M Abolins, OS AbouZeid, OS AbouZeid, H Abramowicz, H Abramowicz, H Abreu, H Abreu, E Acerbi, E Acerbi, E Acerbi, BS Acharya, BS Acharya, BS Acharya, L Adamczyk, L Adamczyk, DL Adams, DL Adams, TN Addy, TN Addy, J Adelman, J Adelman, S Adomeit, S Adomeit, P Adragna, P Adragna, T Adye, T Adye, S Aefsky, S Aefsky, JA Aguilar-Saavedra, JA Aguilar-Saavedra, M Aharrouche, M Aharrouche, SP Ahlen, SP Ahlen, F Ahles, F Ahles, A Ahmad, A Ahmad, M Ahsan, M Ahsan, G Aielli, G Aielli, G Aielli, T Akdogan, T Akdogan, TPA Åkesson, TPA Åkesson, G Akimoto, G Akimoto, AV Akimov, AV Akimov, A Akiyama, A Akiyama, MS Alam, MS Alam, MA Alam, MA Alam, J Albert, J Albert, S Albrand, S Albrand, M Aleksa, M Aleksa, IN Aleksandrov, IN Aleksandrov, F Alessandria, F Alessandria, C Alexa, C Alexa, G Alexander, G Alexander, G Alexandre, G Alexandre, T Alexopoulos, T Alexopoulos, M Alhroob, M Alhroob, M Alhroob, M Aliev, M Aliev, G Alimonti, G Alimonti, J Alison, J Alison

Abstract:

A search for a fermiophobic Higgs boson using diphoton events produced in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV is performed using data corresponding to an integrated luminosity of 4. 9 fb-1 collected by the ATLAS experiment at the Large Hadron Collider. A specific benchmark model is considered where all the fermion couplings to the Higgs boson are set to zero and the bosonic couplings are kept at the Standard Model values (fermiophobic Higgs model). The largest excess with respect to the background-only hypothesis is found at 125. 5 GeV, with a local significance of 2. 9 standard deviations, which reduces to 1. 6 standard deviations when taking into account the look-elsewhere effect. The data exclude the fermiophobic Higgs model in the ranges 110. 0-118. 0 GeV and 119. 5-121. 0 GeV at 95 % confidence level. © 2012 CERN for the benefit of the ATLAS collaboration.

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A search for ttbar resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

JHEP (2012) 041

Authors:

S Livermore, ATLAS collaboration

Abstract:

A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb^-1 of proton-proton collisions at sqrt(s) = 7 TeV collected in 2011 with the ATLAS experiment at the Large Hadron Collider. This analysis of the lepton+jets final state is specifically designed for the particular topology that arises from the decay of highly boosted top quarks. The observed ttbar invariant mass spectrum is found to be compatible with the Standard Model prediction and 95% credibility level upper limits are derived on the ttbar production rate through new massive states. An upper limit of 0.7 pb is set on the production cross section times branching fraction of a narrow 1 TeV resonance. A Kaluza-Klein gluon with a mass smaller than 1.5 TeV is excluded.

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Measurement of high-Q2 neutral current deep inelastic e+p scattering cross sections with a longitudinally polarised positron beam at HERA

(2012)

Authors:

ZEUS Collaboration, H Abramowicz, I Abt, L Adamczyk, M Adamus, R Aggarwal, S Antonelli, P Antonioli, A Antonov, M Arneodo, O Arslan, V Aushev, Y Aushev, O Bachynska, A Bamberger, AN Barakbaev, G Barbagli, G Bari, F Barreiro, N Bartosik, D Bartsch, M Basile, O Behnke, J Behr, U Behrens, L Bellagamba, A Bertolin, S Bhadra, M Bindi, C Blohm, V Bokhonov, T Bold, K Bondarenko, EG Boos, K Borras, D Boscherini, D Bot, I Brock, E Brownson, R Brugnera, N Brummer, A Bruni, G Bruni, B Brzozowska, PJ Bussey, B Bylsma, A Caldwell, M Capua, R Carlin, CD Catterall, S Chekanov, J Chwastowski, J Ciborowski, R Ciesielski, L Cifarelli, F Cindolo, A Contin, AM Cooper-Sarkar, N Coppola, M Corradi, F Corriveau, M Costa, G D'Agostini, F Dal Corso, J del Peso, RK Dementiev, S De Pasquale, M Derrick, RCE Devenish, D Dobur, BA Dolgoshein, G Dolinska, AT Doyle, V Drugakov, LS Durkin, S Dusini, Y Eisenberg, PF Ermolov, A Eskreys, S Fang, S Fazio, J Ferrando, MI Ferrero, J Figiel, B Foster, G Gach, A Galas, E Gallo, A Garfagnini, A Geiser, I Gialas, A Gizhko, LK Gladilin, D Gladkov, C Glasman, O Gogota, Yu A Golubkov, P Gottlicher, I Grabowska-Bold, J Grebenyuk, I Gregor, G Grigorescu, G Grzelak, O Gueta, M Guzik, C Gwenlan, T Haas, W Hain, R Hamatsu, JC Hart, H Hartmann, G Hartner, E Hilger, D Hochman, R Hori, A Huttmann, ZA Ibrahim, Y Iga, R Ingbir, M Ishitsuka, H-P Jakob, F Januschek, TW Jones, M Jungst, I Kadenko, B Kahle, S Kananov, T Kanno, U Karshon, F Karstens, II Katkov, M Kaur, P Kaur, A Keramidas, LA Khein, JY Kim, D Kisielewska, S Kitamura, R Klanner, U Klein, E Koffeman, N Kondrashova, O Kononenko, P Kooijman, Ie Korol, IA Korzhavina, A Kotanski, U Kotz, H Kowalski, O Kuprash, M Kuze, A Lee, BB Levchenko, A Levy, V Libov, S Limentani, TY Ling, M Lisovyi, E Lobodzinska, W Lohmann, B Lohr, E Lohrmann, KR Long, A Longhin, D Lontkovskyi, O Yu Lukina, J Maeda, S Magill, I Makarenko, J Malka, R Mankel, A Margotti, G Marini, JF Martin, A Mastroberardino, MCK Mattingly, I-A Melzer-Pellmann, S Mergelmeyer, S Miglioranzi, F Mohamad Idris, V Monaco, A Montanari, JD Morris, K Mujkic, B Musgrave, K Nagano, T Namsoo, R Nania, A Nigro, Y Ning, T Nobe, D Notz, RJ Nowak, AE Nuncio-Quiroz, BY Oh, N Okazaki, K Olkiewicz, Yu Onishchuk, K Papageorgiu, A Parenti, E Paul, JM Pawlak, B Pawlik, PG Pelfer, A Pellegrino, W Perlanski, H Perrey, K Piotrzkowski, P Plucinski, NS Pokrovskiy, A Polini, AS Proskuryakov, M Przybycien, A Raval, DD Reeder, B Reisert, Z Ren, J Repond, YD Ri, A Robertson, P Roloff, I Rubinsky, M Ruspa, R Sacchi, U Samson, G Sartorelli, AA Savin, DH Saxon, M Schioppa, S Schlenstedt, P Schleper, WB Schmidke, U Schneekloth, V Schonberg, T Schorner-Sadenius, J Schwartz, F Sciulli, LM Shcheglova, R Shehzadi, S Shimizu, I Singh, IO Skillicorn, W Slominski, WH Smith, V Sola, A Solano, D Son, V Sosnovtsev, A Spiridonov, H Stadie, L Stanco, N Stefaniuk, A Stern, TP Stewart, A Stifutkin, P Stopa, S Suchkov, G Susinno, L Suszycki, J Sztuk-Dambietz, D Szuba, J Szuba, AD Tapper, E Tassi, J Terron, T Theedt, H Tiecke, K Tokushuku, J Tomaszewska, V Trusov, T Tsurugai, M Turcato, O Turkot, T Tymieniecka, M Vazquez, A Verbytskyi, O Viazlo, NN Vlasov, R Walczak, WAT Wan Abdullah, JJ Whitmore, K Wichmann, L Wiggers, M Wing, M Wlasenko, G Wolf, H Wolfe, K Wrona, AG Yagues-Molina, S Yamada, Y Yamazaki, R Yoshida, C Youngman, O Zabiegalov, AF Zarnecki, L Zawiejski, O Zenaiev, W Zeuner, BO Zhautykov, N Zhmak, A Zichichi, Z Zolkapli, DS Zotkin

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Measurement of isolated photons accompanied by jets in deep inelastic ep scattering

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 715:1-3 (2012) 88-97

Authors:

H Abramowicz, I Abt, L Adamczyk, M Adamus, R Aggarwal, S Antonelli, P Antonioli, A Antonov, M Arneodo, O Arslan, V Aushev, Y Aushev, O Bachynska, A Bamberger, AN Barakbaev, G Barbagli, G Bari, F Barreiro, N Bartosik, D Bartsch, M Basile, O Behnke, J Behr, U Behrens, L Bellagamba, A Bertolin, S Bhadra, M Bindi, C Blohm, V Bokhonov, T Bołd, K Bondarenko, EG Boos, K Borras, D Boscherini, D Bot, I Brock, E Brownson, R Brugnera, N Brümmer, A Bruni, G Bruni, B Brzozowska, PJ Bussey, B Bylsma, A Caldwell, M Capua, R Carlin, CD Catterall, S Chekanov, J Chwastowski, J Ciborowski, R Ciesielski, L Cifarelli, F Cindolo, A Contin, AM Cooper-Sarkar, N Coppola, M Corradi, F Corriveau, M Costa, G D'Agostini, F Dal Corso, J del Peso, RK Dementiev, S De Pasquale, M Derrick, RCE Devenish, D Dobur, BA Dolgoshein, G Dolinska, AT Doyle, V Drugakov, LS Durkin, S Dusini, Y Eisenberg, PF Ermolov, A Eskreys, S Fang, S Fazio, J Ferrando, MI Ferrero, J Figiel, M Forrest, B Foster, G Gach, A Galas, E Gallo, A Garfagnini, A Geiser, I Gialas, A Gizhko, LK Gladilin, D Gladkov, C Glasman, O Gogota, YA Golubkov, P Göttlicher, I Grabowska-Bołd, J Grebenyuk

Abstract:

The production of isolated high-energy photons accompanied by jets has been measured in deep inelastic ep scattering with the ZEUS detector at HERA, using an integrated luminosity of 326pb -1. Measurements were made for exchanged photon virtualities, Q 2, in the range 10 to 350GeV 2. The photons were measured in the transverse-energy and pseudorapidity ranges 4

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Search for tb resonances in proton-proton collisions at √s=7TeV with the ATLAS detector

Physical Review Letters 109:8 (2012)

Authors:

G Aad, B Abbott, J Abdallah, S Abdel Khalek, AA Abdelalim, A Abdesselam, O Abdinov, B Abi, M Abolins, OS Abouzeid, H Abramowicz, H Abreu, E Acerbi, BS Acharya, L Adamczyk, DL Adams, TN Addy, J Adelman, M Aderholz, S Adomeit, P Adragna, T Adye, S Aefsky, JA Aguilar-Saavedra, M Aharrouche, SP Ahlen, F Ahles, A Ahmad, M Ahsan, G Aielli, T Akdogan, TPA Åkesson, G Akimoto, AV Akimov, A Akiyama, MS Alam, MA Alam, J Albert, S Albrand, M Aleksa, IN Aleksandrov, F Alessandria, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, M Aliev, G Alimonti, J Alison, M Aliyev, BMM Allbrooke, PP Allport, SE Allwood-Spiers, J Almond, A Aloisio, R Alon, A Alonso, B Alvarez Gonzalez, MG Alviggi, K Amako, P Amaral, C Amelung, VV Ammosov, A Amorim, G Amorós, N Amram, C Anastopoulos, LS Ancu, N Andari, T Andeen, CF Anders, G Anders, KJ Anderson, A Andreazza, V Andrei, ML Andrieux, XS Anduaga, A Angerami, F Anghinolfi, A Anisenkov, N Anjos, A Annovi, A Antonaki, M Antonelli, A Antonov, J Antos, F Anulli, S Aoun, L Aperio Bella, R Apolle, G Arabidze, I Aracena, Y Arai, ATH Arce, S Arfaoui, JF Arguin, E Arik, M Arik, AJ Armbruster

Abstract:

This Letter presents a search for tb resonances in 1.04fb-1 of LHC proton-proton collision data collected by the ATLAS detector at a center-of-mass energy of 7 TeV. Events with a lepton, missing transverse momentum, and two jets are selected and the invariant mass of the corresponding final state is reconstructed. The search exploits the shape of the tb invariant mass distribution compared to the expected standard model backgrounds. The model of a right-handed WR′ with standard model-like couplings is chosen as the benchmark model for this search. No statistically significant excess of events is observed in the data, and upper limits on the cross section times the branching ratio of WR′ resonances at 95% C.L. lie in the range of 6.1-1.0 pb for WR′ masses ranging from 0.5 to 2.0 TeV. These limits are translated into a lower bound on the allowed right-handed WR′ mass, giving m WR′>1.13TeV at 95% C.L. © 2012 CERN.

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Professor Claire Gwenlan

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Search for a fermiophobic Higgs boson in the diphoton decay channel with the ATLAS detector

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A search for ttbar resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

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Measurement of high-Q2 neutral current deep inelastic e+p scattering cross sections with a longitudinally polarised positron beam at HERA

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Measurement of isolated photons accompanied by jets in deep inelastic ep scattering

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Search for tb resonances in proton-proton collisions at √s=7TeV with the ATLAS detector

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Professor Claire Gwenlan

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Search for a fermiophobic Higgs boson in the diphoton decay channel with the ATLAS detector

Authors:

Abstract:

A search for ttbar resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

Authors:

Abstract:

Measurement of high-Q2 neutral current deep inelastic e+p scattering cross sections with a longitudinally polarised positron beam at HERA

Authors:

Measurement of isolated photons accompanied by jets in deep inelastic ep scattering

Authors:

Abstract:

Search for tb resonances in proton-proton collisions at √s=7TeV with the ATLAS detector

Authors:

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