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Measurement of azimuthal anisotropy of muons from charm and bottom hadrons in pp collisions at sqrt[s]=13  TeV with the ATLAS Detector

Physical Review Letters American Physical Society 124:8 (2020) 82301

Authors:

G Aad, B Abbott, Dc Abbott, A Abed Abud, K Abeling, Dk Abhayasinghe, Sh Abidi, Os AbouZeid, Nl Abraham, H Abramowicz, H Abreu, Y Abulaiti, Bs Acharya, B Achkar, S Adachi, L Adam, C Adam Bourdarios, L Adamczyk, L Adamek, J Adelman, M Adersberger, A Adiguzel, S Adorni, T Adye, Aa Affolder, Y Afik, C Agapopoulou, Mn Agaras, A Aggarwal, C Agheorghiesei, Ja Aguilar-Saavedra, F Ahmadov, Ws Ahmed, X Ai, G Aielli, S Akatsuka, Tpa Åkesson, E Akilli, Av Akimov, K Al Khoury, Gl Alberghi, J Albert, Mj Alconada Verzini, S Alderweireldt, M Aleksa, In Aleksandrov, C Alexa, D Alexandre, T Alexopoulos

Abstract:

The elliptic flow of muons from the decay of charm and bottom hadrons is measured in pp collisions at sqrt[s]=13  TeV using a data sample with an integrated luminosity of 150  pb^{-1} recorded by the ATLAS detector at the LHC. The muons from heavy-flavor decay are separated from light-hadron decay muons using momentum imbalance between the tracking and muon spectrometers. The heavy-flavor decay muons are further separated into those from charm decay and those from bottom decay using the distance-of-closest-approach to the collision vertex. The measurement is performed for muons in the transverse momentum range 4-7 GeV and pseudorapidity range |η|<2.4. A significant nonzero elliptic anisotropy coefficient v_{2} is observed for muons from charm decays, while the v_{2} value for muons from bottom decays is consistent with zero within uncertainties.
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First combined measurement of the muon neutrino and antineutrino charged-current cross section without pions in the final state at T2K

(2020)

Authors:

K Abe, R Akutsu, A Ali, C Alt, C Andreopoulos, L Anthony, M Antonova, S Aoki, A Ariga, T Arihara, Y Asada, Y Ashida, ET Atkin, Y Awataguchi, S Ban, M Barbi, GJ Barker, G Barr, D Barrow, C Barry, M Batkiewicz-Kwasniak, A Beloshapkin, F Bench, V Berardi, L Berns, S Bhadra, S Bienstock, A Blondel, S Bolognesi, B Bourguille, SB Boyd, D Brailsford, A Bravar, D Bravo Berguño, C Bronner, S Bron, A Bubak, M Buizza Avanzini, J Calcutt, T Campbell, S Cao, SL Cartwright, MG Catanesi, A Cervera, A Chappell, C Checchia, D Cherdack, N Chikuma, G Christodoulou, M Cicerchia, J Coleman, G Collazuol, L Cook, D Coplowe, A Cudd, A Dabrowska, G De Rosa, T Dealtry, PF Denner, SR Dennis, C Densham, F Di Lodovico, N Dokania, S Dolan, TA Doyle, O Drapier, J Dumarchez, P Dunne, A Eguchi, L Eklund, S Emery-Schrenk, A Ereditato, P Fernandez, T Feusels, AJ Finch, GA Fiorentini, G Fiorillo, C Francois, M Friend, Y Fujii, R Fujita, D Fukuda, R Fukuda, Y Fukuda, K Fusshoeller, C Giganti, T Golan, M Gonin, A Gorin, M Guigue, DR Hadley, JT Haigh, P Hamacher-Baumann, M Hartz, T Hasegawa, S Hassani, NC Hastings, T Hayashino, Y Hayato, A Hiramoto, M Hogan, J Holeczek, NT Hong Van, F Iacob, AK Ichikawa, M Ikeda, T Ishida, T Ishii, M Ishitsuka, K Iwamoto, A Izmaylov, M Jakkapu, B Jamieson, SJ Jenkins, C Jesús-Valls, M Jiang, S Johnson, P Jonsson, CK Jung, X Junjie, PB Jurj, M Kabirnezhad, AC Kaboth, T Kajita, H Kakuno, J Kameda, D Karlen, K Kasetti, Y Kataoka, T Katori, Y Kato, E Kearns, M Khabibullin, A Khotjantsev, T Kikawa, H Kikutani, H Kim, S King, J Kisiel, A Knight, A Knox, T Kobayashi, L Koch, T Koga, A Konaka, LL Kormos, Y Koshio, A Kostin, K Kowalik, H Kubo, Y Kudenko, N Kukita, S Kuribayashi, R Kurjata, T Kutter, M Kuze, L Labarga, J Lagoda, M Lamoureux, M Laveder, M Lawe, M Licciardi, T Lindner, RP Litchfield, SL Liu, X Li, A Longhin, L Ludovici, X Lu, T Lux, LN Machado, L Magaletti, K Mahn, M Malek, S Manly, L Maret, AD Marino, L Marti-Magro, JF Martin, T Maruyama, T Matsubara, K Matsushita, V Matveev, K Mavrokoridis, E Mazzucato, M McCarthy, N McCauley, J McElwee, KS McFarland, C McGrew, A Mefodiev, C Metelko, M Mezzetto, A Minamino, O Mineev, S Mine, M Miura, L Molina Bueno, S Moriyama, J Morrison, Th A Mueller, L Munteanu, S Murphy, Y Nagai, T Nakadaira, M Nakahata, Y Nakajima, A Nakamura, KG Nakamura, K Nakamura, S Nakayama, T Nakaya, K Nakayoshi, C Nantais, CER Naseby, TV Ngoc, K Niewczas, K Nishikawa, Y Nishimura, TS Nonnenmacher, F Nova, P Novella, J Nowak, JC Nugent, HM O'Keeffe, L O'Sullivan, T Odagawa, K Okumura, T Okusawa, SM Oser, RA Owen, Y Oyama, V Palladino, JL Palomino, V Paolone, WC Parker, S Parsa, J Pasternak, P Paudyal, M Pavin, D Payne, GC Penn, L Pickering, C Pidcott, G Pintaudi, ES Pinzon Guerra, C Pistillo, B Popov, K Porwit, M Posiadala-Zezula, A Pritchard, B Quilain, T Radermacher, E Radicioni, B Radics, PN Ratoff, E Reinherz-Aronis, C Riccio, E Rondio, S Roth, A Rubbia, AC Ruggeri, C Ruggles, A Rychter, K Sakashita, F Sánchez, G Santucci, CM Schloesser, K Scholberg, J Schwehr, M Scott, Y Seiya, T Sekiguchi, H Sekiya, D Sgalaberna, R Shah, A Shaikhiev, F Shaker, A Shaykina, M Shiozawa, W Shorrock, A Shvartsman, A Smirnov, M Smy, JT Sobczyk, H Sobel, FJP Soler, Y Sonoda, J Steinmann, S Suvorov, A Suzuki, SY Suzuki, Y Suzuki, AA Sztuc, M Tada, M Tajima, A Takeda, Y Takeuchi, HK Tanaka, HA Tanaka, S Tanaka, LF Thompson, W Toki, C Touramanis, T Towstego, KM Tsui, T Tsukamoto, M Tzanov, Y Uchida, M Vagins, S Valder, Z Vallari, D Vargas, G Vasseur, C Vilela, WGS Vinning, T Vladisavljevic, VV Volkov, T Wachala, J Walker, JG Walsh, Y Wang, D Wark, MO Wascko, A Weber, R Wendell, MJ Wilking, C Wilkinson, JR Wilson, RJ Wilson, K Wood, C Wret, Y Yamada, K Yamamoto, C Yanagisawa, G Yang, T Yano, K Yasutome, S Yen, N Yershov, M Yokoyama, T Yoshida, M Yu, A Zalewska, J Zalipska, K Zaremba, G Zarnecki, M Ziembicki, ED Zimmerman, M Zito, S Zsoldos, A Zykova
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Vertex-Finding and Reconstruction of Contained Two-track Neutrino Events in the MicroBooNE Detector

(2020)

Authors:

MicroBooNE collaboration, P Abratenko, M Alrashed, R An, J Anthony, J Asaadi, A Ashkenazi, S Balasubramanian, B Baller, C Barnes, G Barr, V Basque, L Bathe-Peters, S Berkman, A Bhanderi, A Bhat, M Bishai, A Blake, T Bolton, L Camilleri, D Caratelli, I Caro Terrazas, R Castillo Fernandez, F Cavanna, G Cerati, Y Chen, E Church, D Cianci, EO Cohen, JM Conrad, M Convery, L Cooper-Troendle, JI Crespo-Anadon, M Del Tutto, D Devitt, L Domine, K Duffy, S Dytman, B Eberly, A Ereditato, L Escudero Sanchez, JJ Evans, GA Fiorentini Aguirre, RS Fitzpatrick, BT Fleming, N Foppiani, D Franco, AP Furmanski, D Garcia-Gamez, S Gardiner, V Genty, D Goeldi, S Gollapinni, O Goodwin, E Gramellini, P Green, H Greenlee, L Gu, W Gu, R Guenette, P Guzowski, E Hall, P Hamilton, O Hen, C Hill, GA Horton-Smith, A Hourlier, EC Huang, R Itay, C James, J Jan de Vries, X Ji, L Jiang, JH Jo, RA Johnson, YJ Jwa, G Karagiorgi, W Ketchum, B Kirby, M Kirby, T Kobilarcik, I Kreslo, R LaZur, I Lepetic, K Li, Y Li, A Lister, BR Littlejohn, S Lockwitz, D Lorca, WC Louis, M Luethi, B Lundberg, X Luo, A Marchionni, S Marcocci, C Mariani, J Marshall, J Martin-Albo, DA Martinez Caicedo, K Mason, A Mastbaum, N McConkey, V Meddage, T Mettler, K Miller, J Mills, K Mistry, T Mohayai, A Mogan, J Moon, M Mooney, CD Moore, J Mousseau, M Murphy, D Naples, RK Neely, P Nienaber, J Nowak, O Palamara, V Pandey, V Paolone, A Papadopoulou, V Papavassiliou, SF Pate, A Paudel, Z Pavlovic, E Piasetzky, I Ponce-Pinto, D Porzio, S Prince, G Pulliam, X Qian, JL Raaf, V Radeka, A Rafique, L Ren, L Rochester, J Rodriguez Rondon, HE Rogers, M Ross-Lonergan, C Rudolf von Rohr, B Russell, G Scanavini, DW Schmitz, A Schukraft, W Seligman, MH Shaevitz, R Sharankova, J Sinclair, A Smith, EL Snider, M Soderberg, S Soldner-Rembold, SR Soleti, P Spentzouris, J Spitz, M Stancari, J St John, T Strauss, K Sutton, S Sword-Fehlberg, AM Szelc, N Tagg, W Tang, K Terao, RT Thornton, M Toups, Y-T Tsai, S Tufanli, MA Uchida, T Usher, W Van De Pontseele, RG Van de Water, B Viren, M Weber, H Wei, DA Wickremasinghe, Z Williams, S Wolbers, T Wongjirad, M Wospakrik, W Wu, T Yang, G Yarbrough, LE Yates, GP Zeller, J Zennamo, C Zhang
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Construction of precision wire readout planes for the Short-Baseline Near Detector (SBND)

(2020)

Authors:

R Acciarri, C Adams, C Andreopoulos, J Asaadi, M Babicz, C Backhouse, W Badgett, LF Bagby, D Barker, C Barnes, A Basharina-Freshville, V Basque, A Baxter, MCQ Bazetto, O Beltramello, M Betancourt, A Bhanderi, A Bhat, MRM Bishai, A Bitadze, AST Blake, J Boissevain, C Bonifazi, JY Book, D Brailsford, A Brandt, J Bremer, T Brooks, BA Bullard, L Camilleri, MF Carneiro, R Castillo Fernández, M Chalifour, Y Chen, H Chen, G Chisnall, D Cianci, JI Crespo-Anadón, E Cristaldo, C Cuesta, IL de Icaza Astiz, A De Roeck, G De Sá Pereira, G de Souza, SR Dennis, L Di Giulio, S Dixon, A Elvin, A Ereditato, JJ Evans, AC Ezeribe, C Fabre, J Farrell, RS Fitzpatrick, BT Fleming, N Foppiani, W Foreman, D Franco, J Freestone, AP Furmanski, T Gamble, S Gao, D Garcia-Gamez, MP Garman, HF Gatti, G Ge, I Gil-Botella, S Gollapinni, O Goodwin, P Green, WC Griffith, R Guenette, P Guzowski, P Hamilton, S Hentschel, CM Hill, A Holin, S Holt, J Hrivnak, EC Huang, CC James, RS Jones, Y Jwa, G Karagiorgi, E Kemp, MJ Kim, U Kose, I Kreslo, S Kubecki, VA Kudryavtsev, B Lacarelle, MR Langstaff, J Larkin, R LaZur, I Lepetic, BR Littlejohn, D Lorca, WC Louis, AA Machado, M Malek, C Mariani, F Marinho, A Mastbaum, K Mavrokoridis, N McConkey, V Meddage, I Mercer, T Mettler, K Miller, K Mistry, D Mladenov, AJ Mogan, J Molina, M Mooney, J Mousseau, M Nessi, S Ni, R Northrop, J Nowak, O Palamara, S Palestini, C Palomares, V Pandey, JR Pater, L Paulucci, Z Pavlovic, D Payne, OLG Peres, O Peres, F Piastra, F Pietropaolo, VL Pimentel, X Pons, G Putnam, X Qian, V Radeka, E Raguzin, P Ratoff, H Ray, B Rebel, M Reggiani-Guzzo, F Resnati, K Rielage, A Rigamonti, D Rivera, M Roda, M Ross-Lonergan, G Scanavini, A Scarff, DW Schmitz, A Schukraft, E Segreto, E Seletskaya, MH Shaevitz, J Sinclair, R Soares, M Soderberg, S Söldner-Rembold, HV Souza, F Spagliardi, M Spanu, J Spitz, NJC Spooner, M Stancari, J Statter, GV Stenico, T Strauss, P Sutcliffe, K Sutton, AM Szelc, W Tang, J Tena Vidal, C Thorn, RT Thornton, D Torretta, M Toups, C Touramanis, M Tripathi, S Tufanli, E Tyley, GA Valdiviesso, R Van de Water, M Weber, P Wilson, A Wilson, M Worcester, E Worcester, MH Wright, N Wright, B Yu, J Yu, B Zamorano, A Zani, J Zennamo, M Zhao
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Search for electroweak production of charginos and sleptons decaying into final states with two leptons and missing transverse momentum in √s=13 TeV pp collisions using the ATLAS detector

European Physical Journal C Springer Nature 80:2 (2020) 123

Authors:

ATLAS Collaboration, G Aad, B Abbott, Alan Barr

Abstract:

A search for the electroweak production of charginos and sleptons decaying into final states with two electrons or muons is presented. The analysis is based on 139 fb−1 of proton–proton collisions recorded by the ATLAS detector at the Large Hadron Collider at s√=13 TeV. Three R-parity-conserving scenarios where the lightest neutralino is the lightest supersymmetric particle are considered: the production of chargino pairs with decays via either W bosons or sleptons, and the direct production of slepton pairs. The analysis is optimised for the first of these scenarios, but the results are also interpreted in the others. No significant deviations from the Standard Model expectations are observed and limits at 95% confidence level are set on the masses of relevant supersymmetric particles in each of the scenarios. For a massless lightest neutralino, masses up to 420 GeV are excluded for the production of the lightest-chargino pairs assuming W-boson-mediated decays and up to 1 TeV for slepton-mediated decays, whereas for slepton-pair production masses up to 700 GeV are excluded assuming three generations of mass-degenerate sleptons.
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