Accelerator Neutrinos

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The ATLAS EventIndex: Full chain deployment and first operation

Nuclear and Particle Physics Proceedings Elsevier 273 (2016) 913-918

Authors:

D Barberis, J Cranshaw, A Favareto, A Fernández Casaní, ATLAS Collaboration, E Gallas, S González de la Hoz, J Hřivnáč, D Malon, M Nowak, F Prokoshin, J Salt, J Sánchez Martínez, R Többicke, R Yuan
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Measurement of the multiple-muon charge ratio in the MINOS Far Detector

Physical Review D American Physical Society 93:5 (2016) ARTN 052017

Authors:

P Adamson, I Anghel, A Aurisano, Giles Barr, M Bishai, A Blake, GJ Bock, D Bogert, SV Cao, TJ Carroll, CM Castromonte, R Chen, S Childress, JAB Coelho, L Corwin, D Cronin-Hennessy, JK De Jong, S De Rijck, AV Devan, NE Devenish, MV Diwan, CO Escobar, JJ Evans, E Falk, GJ Feldman

Abstract:

The charge ratio, Rμ=Nμ+/Nμ−, for cosmogenic multiple-muon events observed at an underground depth of 2070 mwe has been measured using the magnetized MINOS Far Detector. The multiple-muon events, recorded nearly continuously from August 2003 until April 2012, comprise two independent data sets imaged with opposite magnetic field polarities, the comparison of which allows the systematic uncertainties of the measurement to be minimized. The multiple-muon charge ratio is determined to be Rμ=1.104±0.006(stat)+0.009−0.010(syst). This measurement complements previous determinations of single-muon and multiple-muon charge ratios at underground sites and serves to constrain models of cosmic-ray interactions at TeV energies.
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Measurement of the multiple-muon charge ratio in the MINOS Far Detector

PHYSICAL REVIEW D 93:5 (2016) ARTN 052017

Authors:

P Adamson, I Anghel, A Aurisano, G Barr, M Bishai, A Blake, GJ Bock, D Bogert, SV Cao, TJ Carroll, CM Castromonte, R Chen, S Childress, JAB Coelho, L Corwin, D Cronin-Hennessy, JK de Jong, S De Rijck, AV Devan, NE Devenish, MV Diwan, CO Escobar, JJ Evans, E Falk, GJ Feldman, W Flanagan, MV Frohne, M Gabrielyan, HR Gallagher, S Germani, RA Gomes, MC Goodman, P Gouffon, N Graf, R Gran, K Grzelak, A Habig, SR Hahn, J Hartnell, R Hatcher, A Holin, J Huang, J Hylen, GM Irwin, Z Isvan, C James, D Jensen, T Kafka, SMS Kasahara, G Koizumi, M Kordosky, A Kreymer, K Lang, J Ling, PJ Litchfield, P Lucas, WA Mann, ML Marshak, N Mayer, C McGivern, MM Medeiros, R Mehdiyev, JR Meier, MD Messier, WH Miller, SR Mishra, SM Sher, CD Moore, L Mualem, J Musser, D Naples, JK Nelson, HB Newman, RJ Nichol, JA Nowak, J O'Connor, M Orchanian, RB Pahlka, J Paley, RB Patterson, G Pawloski, A Perch, MM Pfuetzner, DD Phan, S Phan-Budd, RK Plunkett, N Poonthottathil, X Qiu, A Radovic, B Rebel, C Rosenfeld, HA Rubin, P Sail, MC Sanchez, J Schneps, A Schreckenberger, P Schreiner, R Sharma, A Sousa, N Tagg, RL Talaga, J Thomas, MA Thomson, X Tian, A Timmons, J Todd, SC Tognini, R Toner, D Torretta, G Tzanakos, J Urheim, P Vahle, B Viren, A Weber, RC Webb, C White, L Whitehead, LH Whitehead, SG Wojcicki, R Zwaska, MINOS Collaboration
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First measurement of muon-neutrino disappearance in NOvA

PHYSICAL REVIEW D 93:5 (2016) ARTN 051104

Authors:

P Adamson, C Ader, M Andrews, N Anfimov, I Anghel, K Arms, E Arrieta-Diaz, A Aurisano, DS Ayres, C Backhouse, M Baird, BA Bambah, K Bays, R Bernstein, M Betancourt, V Bhatnagar, B Bhuyan, J Bian, K Biery, T Blackburn, V Bocean, D Bogert, A Bolshakova, M Bowden, C Bower, D Broemmelsiek, C Bromberg, G Brunetti, X Bu, A Butkevich, D Capista, E Catano-Mur, TR Chase, S Childress, BC Choudhary, B Chowdhury, TE Coan, JAB Coelho, M Colo, J Cooper, L Corwin, D Cronin-Hennessy, A Cunningham, GS Davies, JP Davies, M Del Tutto, PF Derwent, KN Deepthi, D Demuth, S Desai, G Deuerling, A Devan, J Dey, R Dharmapalan, P Ding, S Dixon, Z Djurcic, EC Dukes, H Duyang, R Ehrlich, GJ Feldman, N Felt, EJ Fenyves, E Flumerfelt, S Foulkes, MJ Frank, W Freeman, M Gabrielyan, HR Gallagher, M Gebhard, T Ghosh, W Gilbert, A Giri, S Goadhouse, RA Gomes, L Goodenough, MC Goodman, V Grichine, N Grossman, R Group, J Grudzinski, V Guarino, B Guo, A Habig, T Handler, J Hartnell, R Hatcher, A Hatzikoutelis, K Heller, C Howcroft, J Huang, X Huang, J Hylen, M Ishitsuka, F Jediny, C Jensen, D Jensen, C Johnson, H Jostlein, GK Kafka, Y Kamyshkov, SMS Kasahara, S Kasetti, K Kephart, G Koizumi, S Kotelnikov, I Kourbanis, Z Krahn, V Kravtsov, A Kreymer, Ch Kulenberg, A Kumar, T Kutnink, R Kwarciancy, J Kwong, K Lang, A Lee, WM Lee, K Lee, S Lein, J Liu, M Lokajicek, J Lozier, Q Lu, P Lucas, S Luchuk, P Lukens, G Lukhanin, S Magill, K Maan, WA Mann, ML Marshak, M Martens, J Martincik, P Mason, K Matera, M Mathis, V Matveev, N Mayer, E McCluskey, R Mehdiyev, H Merritt, MD Messier, H Meyer, T Miao, D Michael, SP Mikheyev, WH Miller, SR Mishra, R Mohanta, A Moren, L Mualem, M Muether, S Mufson, J Musser, HB Newman, JK Nelson, E Niner, A Norman, J Nowak, Y Oksuzian, A Olshevskiy, J Oliver, T Olson, J Paley, P Pandey, A Para, RB Patterson, G Pawloski, N Pearson, D Perevalov, D Pershey, E Peterson, R Petti, S Phan-Budd, L Piccoli, A Pla-Dalmau, RK Plunkett, R Poling, B Potukuchi, F Psihas, D Pushka, X Qiu, N Raddatz, A Radovic, RA Rameika, R Ray, B Rebel, R Rechenmacher, B Reed, R Reilly, D Rocco, D Rodkin, K Ruddick, R Rusack, V Ryabov, K Sachdev, S Sahijpal, H Sahoo, O Samoylov, MC Sanchez, N Saoulidou, P Schlabach, J Schneps, R Schroeter, J Sepulveda-Quiroz, P Shanahan, B Sherwood, A Sheshukov, J Singh, V Singh, A Smith, D Smith, J Smolik, N Solomey, A Sotnikov, A Sousa, K Soustruznik, Y Stenkin, M Strait, L Suter, RL Talaga, MC Tamsett, S Tariq, P Tas, RJ Tesarek, RB Thayyullathil, K Thomsen, X Tian, SC Tognini, R Toner, J Trevor, G Tzanakos, J Urheim, P Vahle, L Valerio, L Vinton, T Vrba, AV Waldron, B Wang, Z Wang, A Weber, A Wehmann, D Whittington, N Wilcer, R Wildberger, D Wildman, K Williams, SG Wojcicki, K Wood, M Xiao, T Xin, N Yadav, S Yang, S Zadorozhnyy, J Zalesak, B Zamorano, A Zhao, J Zirnstein, R Zwaska, NOvA Collaboration
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Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at √s = 8 TeV

European Physical Journal C Springer Berlin Heidelberg 76:3 (2016)

Authors:

G Aad, B Abbott, J Abdallah, O Abdinov, R Aben, M Abolins, OS AbouZeid, H Abramowicz, H Abreu, R Abreu, Y Abulaiti, BS Acharya, L Adamczyk, DL Adams, J Adelman, S Adomeit, T Adye, AA Affolder, T Agatonovic-Jovin, J Agricola, JA Aguilar-Saavedra, SP Ahlen, F Ahmadov, G Aielli, H Akerstedt, TPA Åkesson, AV Akimov, GL Alberghi, J Albert, S Albrand, MJ Alconada Verzini, M Aleksa, IN Aleksandrov, C Alexa, G Alexander, T Alexopoulos, M Alhroob, G Alimonti, L Alio, J Alison, SP Alkire, BMM Allbrooke, PP Allport, A Aloisio, A Alonso, F Alonso, C Alpigiani, Cigdem Issever

Abstract:

This paper reports a detailed study of techniques for identifying boosted, hadronically decaying W bosons using 20.3 fb (Formula presented.) of proton–proton collision data collected by the ATLAS detector at the LHC at a centre-of-mass energy (Formula presented.). A range of techniques for optimising the signal jet mass resolution are combined with various jet substructure variables. The results of these studies in Monte Carlo simulations show that a simple pairwise combination of groomed jet mass and one substructure variable can provide a 50 % efficiency for identifying W bosons with transverse momenta larger than 200 GeV while maintaining multijet background efficiencies of 2–4 % for jets with the same transverse momentum. These signal and background efficiencies are confirmed in data for a selection of tagging techniques.
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