Executive summary

JOURNAL OF INSTRUMENTATION 15:8 (2020)

Authors:

B Abi, R Acciarri, MA Acero, G Adamov, D Adams, M Adinolfi, Z Ahmad, J Ahmed, T Alion, S Alonso Monsalve, C Alt, J Anderson, C Andreopoulos, M Andrews, F Andrianala, S Andringa, A Ankowski, M Antonova, S Antusch, A Aranda-Fernandez, A Ariga, LO Arnold, MA Arroyave, J Asaadi, A Aurisano, V Aushev, D Autiero, F Azfar, H Back, JJ Back, C Backhouse, P Baesso, L Bagby, R Bajou, S Balasubramanian, P Baldi, B Bambah, F Barao, G Barenboim, G Barker, W Barkhouse, C Barnes, G Barr, J Barranco Monarca, N Barros, JL Barrow, A Bashyal, V Basque, F Bay, J Bazo Alba, JF Beacom, E Bechetoille, B Behera, L Bellantoni, G Bellettini, V Bellini, O Beltramello, D Belver, N Benekos, F Bento Neves, J Berger, S Berkman, P Bernardini, RM Berner, H Berns, S Bertolucci, M Betancourt, Y Bezawada, M Bhattacharjee, B Bhuyan, S Biagi, J Bian, M Biassoni, K Biery, B Bilki, M Bishai, A Bitadze, A Blake, B Blanco Siffert, F Blaszczyk, G Blazey, E Blucher, J Boissevain, S Bolognesi, T Bolton, M Bonesini, M Bongrand, F Bonini, A Booth, C Booth, S Bordoni, A Borkum, T Boschi, N Bostan, P Bour, S Boyd, D Boyden, J Bracinik, D Braga, D Brailsford, A Brandt, J Bremer, C Brew, E Brianne, SJ Brice, C Brizzolari, C Bromberg, G Brooijmans, J Brooke, A Bross, G Brunetti, N Buchanan, H Budd, D Caiulo, P Calaftura, J Calcutt, M Calin, S Calvez, E Calvo, L Camilleri, A Caminata, M Campanelli, D Caratelli, G Carini, B Carlus, P Carniti, I Caro Terrazas, H Carranza, A Castillo, C Castromonte, C Cattadori, F Cavalier, F Cavanna, S Centro, G Cerati, A Cervelli, A Cervera Villanueva, M Chalifour, C Chang, E Chardonnet, A Chatterjee, S Chattopadhyay, J Chaves, H Chen, M Chen, Y Chen, D Cherdack, C Chi, S Childress, A Chiriacescu, K Cho, S Choubey, A Christensen, D Christian, G Christodoulou, E Church, P Clarke, TE Coan, AG Cocco, J Coelho, E Conley, J Conrad, M Convery, L Corwin, P Cotte, L Cremaldi, L Cremonesi, JI Crespo-Anadon, E Cristaldo, R Cross, C Cuesta, Y Cui, D Cussans, M Dabrowski, H Da Motta, L Da Silva Peres, Q David, GS Davies, S Davini, J Dawson, K De, RM De Almeida, P Debbins, I De Bonis, M Decowski, A De Gouvea, PC De Holanda, IL De Icaza Astiz, A Deisting, P De Jong, A Delbart, D Delepine, M Delgado, A Dell'Acctua, P De Lurgio, JR De Mello Neto, DM DeMuth, S Dennis, C Densham, G Deptuch, A De Roeck, V De Romeri, J De Vries, R Dharmapalan, M Dias, F Diaz, J Diaz, S Di Domizio, L Di Giulio, P Ding, L Di Noto, C Distefano, R Diurha, M Diwan, Z Djurcic, N Dokania, M Dolinski, L Domine, D Douglas, F Drielsma, D Duchesneau, K Duffy, P Dunne, T Durkin, H Duyang, O Dvornikov, D Dwyer, A Dyshkant, M Eads, D Edmunds, J Eisch, S Emery, A Ereditato, C Escobar, L Escudero Sanchez, JJ Evans, E Ewart, AC Ezeribe, K Fahey, A Falcone, C Farnese, Y Farzan, J Felix, E Fernandez-Martinez, P Fernandez Menendez, F Ferraro, L Fields, A Filkins, F Filthaut, RS Fitzpatrick, W Flanagan, B Fleming, R Flight, J Fowler, W Fox, J Franc, K Francis, D Franco, J Freeman, J Freestone, J Fried, A Friedland, S Fuess, I Furic, AP Furmanski, A Gago, H Gallagher, A Gallego-Ros, N Gailice, V Galymov, E Gamberini, T Gamble, R Gandhi, R Gandrajula, S Gao, D Garcia-Gamez, MA Garcia-Peris, S Gardiner, D Gastler, G Ge, B Gelli, A Gendotti, S Gent, Z Ghorbani-Moghaddam, D Gibin, I Gil-Botella, C Girerd, A Giri, D Gnani, O Gogota, M Gold, S Gollapinni, K Gollwitzer, RA Gomes, L Gomez Bermeo, LS Gomez Fajardo, F Gonnella, J Gonzalez-Cuevas, MC Goodman, O Goodwin, S Goswami, C Gotti, E Goudzovski, C Grace, M Graham, E Gramellini, R Gran, E Granados, A Grant, C Grant, D Gratieri, P Green, S Green, L Greenler, M Greenwood, J Greer, C Griffith, M Groh, J Grudzinski, K Grzelak, W Gu, V Guarino, R Guenette, A Guglielmi, B Guo, K Guthikonda, R Gutierrez, P Guzowski, MM Guzzo, S Gwon, A Habig, A Hackenburg, H Hadavand, R Haenni, A Hahn, J Haigh, J Haiston, T Hamernik, P Hamilton, J Han, K Harder, DA Harris, J Hartnell, T Hasegawa, R Hatcher, E Hazen, A Heavey, KM Heeger, K Hennessy, S Henry, M Hernandez Morquecho, K Herner, L Hertel, AS Hesam, J Hewes, A Higuera Pichardo, T Hill, SJ Hillier, A Himmel, J Hoff, C Hohl, A Holin, E Hoppe, GA Horton-Smith, M Hostert, A Hourlier, B Howard, R Howell, J Huang, J Huang, J Hugon, G Iles, AM Iliescu, R Illingworth, A Ioannisian, R Itay, A Izmaylov, E James, B Jargowsky, F Jediny, C Jesus-Valls, X Ji, L Jiang, S Jimnez, A Jipa, A Joglekar, C Johnson, R Johnson, B Jones, S Jones, C Jung, T Junk, Y Jwa, M Kabhirnezhad, A Kaboth, I Kadenko, F Kamiya, G Karagiorgi, A Karcher, M Karolak, Y Karyotakis, S Kasai, SP Kasetti, L Kashur, N Kazaryan, E Kearns, P Keener, KJ Kelly, E Kemp, W Ketchum, S Kettell, M Khabibullin, A Khotjantsev, A Khvedelidze, D Kim, B King, B Kirby, M Kirby, J Klein, K Koehler, LW Koerner, S Kohn, PP Koller, M Kordosky, T Kosc, U Kose, V Kostelecky, K Kothekar, F Krennrich, Kreslo, Y Kudenko, V Kudryavtsev, S Kulagin, J Kumar, R Kumar, C Kuruppu, V Kus, T Kutter, A Lambert, K Lande, CE Lane, K Lang, T Langford, P Lasorak, D Last, C Lastoria, A Laundrie, A Lawrence, I Lazanu, R LaZur, T Le, J Learned, P LeBrun, G Lehmann Miotto, R Lehnert, M Leigui de Oliveira, M Leitner, M Leyton, L Li, S Li, S Li, T Li, Y Li, H Liao, C Lin, S Lin, A Lister, BR Littlejohn, J Liu, S Lockwitz, T Loew, M Lokajicek, I Lomidze, K Long, K Loo, D Lorca, T Lord, J LoSecco, WC Louis, K Luk, X Luo, N Lurkin, T Lux, VP Luzio, D MacFarland, A Machado, P Machado, C Macias, J Macier, A Maddalena, P Madigan, S Magill, K Mahn, A Maio, JA Maloney, G Mandrioli, JC Maneira, L Manenti, S Manly, A Mann, K Manolopoulos, M Manrique Plata, A Marchionni, W Mareiano, D Marfatia, C Mariani, J Maricic, F Marinho, AD Marino, M Marshak, C Marshall, J Marshall, J Marteau, J Martin-Albo, N Martinez, DA Martinez Caicedo, S Martynenko, K Mason, A Mastbaum, M Masud, S Matsuno, J Matthews, C Mauger, N Mauri, K Mavrokoridis, R Mazza, A Mazzacane, E Mazzucato, E McCluskey, N McConkey, KS McFarland, C McGrew, A McNab, A Mefodiev, P Mehta, P Melas, V Mellinato, O Mena, S Menary, H Mendez, A Menegolli, G Meng, V Messier, W Metcalf, M Mewes, H Meyer, T Miao, G Michna, T Miedema, J Migenda, R Milincic, W Miller, J Mills, C Milne, O Mineev, OG Miranda, S Miryala, C Mishra, S Mishra, A Mislivec, D Mladenov, I Mocioiu, K Moffat, N Moggi, R Mohanta, TA Mohayai, N Mokhov, JA Molina, L Molina Bueno, A Montanari, C Montanari, D Montanari, LM Montano Zetina, J Moon, M Mooney, A Moor, D Moreno, B Morgan, C Morris, C Mossey, E Motuk, CA Moura, J Mousseau, W Mu, L Mualem, J Mueller, M Muether, S Mufson, F Muheim, A Muir, M Mulhearn, H Muramatsu, S Murphy, J Musser, J Nachtman, S Nagu, M Nalbandyan, R Nandakumar, D Naples, S Narita, D Navas-Nicolas, N Nayak, M Nebot-Guinot, L Necib, K Negishi, JK Nelson, J Nesbit, M Nessi, D Newbold, M Newcomer, D Newhart, R Nichol, E Niner, K Nishimura, A Norman, R Northrop, P Novella, JA Nowak, M Oberling, A Olivares Del Campo, A Olivier, Y Onel, Y Onishchuk, J Ott, L Pagani, S Pakvasa, O Palamara, S Palestini, JM Paley, M Pallavicini, C Palomares, E Pantic, V Paolone, V Paparlimitriou, R Papaleo, A Papanestis, S Paramesvaran, S Parke, Z Parsa, M Parvu, S Pascoli, L Pasqualini, J Pasternak, J Pater, C Patrick, L Patrizii, RB Patterson, S Patton, T Patzak, A Paudel, B Paulos, L Paulucci, Z Pavlovic, G Pawloski, D Payne, V Pec, SJ Peeters, Y Penichot, E Pennacchio, A Penzo, OL Peres, J Perry, D Pershey, G Pessina, G Petrillo, C Petta, R Petti, F Piastra, L Pickering, F Pietropaolo, J Pillow, R Plunkett, R Poling, X Pons, N Poonthottathil, S Pordes, M Potekhin, R Potenza, BV Potukuchi, J Pozimski, M Pozzato, S Prakash, T Prakash, S Prince, G Prior, D Pugnere, K Qi, X Qian, J Raaf, R Raboanary, V Radeka, J Rademacker, B Radics, A Rafique, E Raguzin, M Rai, M Rajaoalisoa, I Rakhno, H Rakotondramanana, L Rakotondravohitra, Y Ramachers, R Rameika, Vi Ramirez Delgado, B Ramson, A Rappoldi, G Raselli, P Ratoff, S Ravat, H Razafinime, J Real, B Rebel, D Redondo, M Reggiani-Grizzo, T Rehak, J Reichenbacher, SD Reitzner, A Renshaw, S Rescia, F Resnati, A Reynolds, G Riccobene, LC Rice, K Rielage, Y Rigaut, D Rivera, L Rochester, M Roda, P Rodrigues, M Rodriguez Alonso, J Rodriguez Rondon, A Roeth, H Rogers, S Rosauro-Alcaraz, M Rossella, J Rout, S Roy, A Rubbia, C Rubbia, B Russell, J Russell, D Ruterbories, R Saakyan, S Sacerdoti, T Safford, N Sahu, P Sala, N Samios, M Sanchez, DA Sanders, D Sankey, S Santana, M Santos-Maldonado, N Saoulidou, P Sapienza, C Sarasty, L Sarcevic, G Savage, V Savinov, A Scaramelli, A Scarff, A Scarpelli, T Schaffer, H Schellman, P Schlabach, D Schmitz, K Scholberg, A Schukraft, E Segreto, J Sensenig, I Seong, A Sergi, F Sergiampietri, D Sgalaberna, M Shaevitz, S Shafaq, M Shamma, HR Sharma, R Sharma, T Shaw, C Shepherd-Themistocleous, S Shin, D Shooltz, R Shrock, L Simard, N Simos, J Sinclair, G Sinev, J Singh, J Singh, V Singh, R Sipos, F Sippach, G Sirri, A Sitraka, K Siyeon, D Smargianaki, A Smith, A Smith, E Smith, P Smith, J Smolik, M Smy, P Snopok, M Soares Nunes, H Sobel, M Soderberg, CJ Solano Salinas, S Sodner-Rembold, N Solomey, V Solovov, WE Sondheim, M Sorel, J Soto-Oton, A Sousa, K Soustruznik, F Spagliardi, M Spanu, J Spitz, NJ Spooner, K Spurgeon, R Staley, M Stancari, L Stanco, H Steiner, J Stewart, B Stillwell, J Stock, F Stocker, T Stokes, M Strait, T Strauss, S Striganov, A Stuart, D Summers, A Surdo, V Susic, L Suter, C Sutera, R Svoboda, B Szczerbinska, A Szelc, R Talaga, H Tanaka, B Tapia Oregui, A Tapper, S Tariq, E Tatar, R Tayloe, A Teklu, M Tenti, K Terao, CA Ternes, F Terranova, G Testera, A Thea, JL Thompson, C Thorn, S Timm, A Tonazzo, M Torti, M Tortola, F Tortorici, D Totani, M Toups, C Touramanis, J Trevor, WH Trzaska, YT Tsai, Z Tsamalaidze, K Tsang, N Tsverava, S Tufanli, C Tull, E Tyley, M Tzanov, MA Uchida, J Urheim, T Usher, M Vagins, P Vahle, G Valdiviesso, E Valencia, Z Vallari, JW Valle, S Vallecorsa, R Van Berg, RG Van de Water, D Vanegas Forero, F Varanini, D Vargas, G Varner, J Vasel, G Vasseur, K Vaziri, S Ventura, A Verdugo, S Vergani, MA Vermeulen, M Verzocchi, H Vieira de Souza, C Vignoli, C Vilela, B Viren, T Vrba, T Wachala, AV Waldron, M Wallbank, H Wang, J Wang, Y Wang, Y Wang, K Warburton, D Warner, M Wascko, D Waters, A Watson, P Weatherly, A Weber, M Weber, H Wei, A Weinstein, D Wenman, M Wetstein, MR While, A White, LH Whitehead, D Whittington, MJ Wilking, C Wilkinson, Z Williams, F Wilson, RJ Wilson, J Wolcott, T Wongjirad, K Wood, L Wood, E Worcester, M Worcester, C Wret, W Wu, W Wu, Y Xiao, G Yang, T Yang, N Yershov, K Yonehara, T Young, B Yu, J Yu, J Zalesak, L Zambelli, B Zamorano, A Zani, L Zazueta, G Zeller, J Zennamo, K Zeug, C Zhang, M Zhao, E Zhivun, G Zhu, ED Zimmerman, M Zito, S Zucchelli, J Zuklin, V Zutshi, R Zwaska

Predicting the T2K Neutrino Flux and Measuring Oscillation Parameters

Springer Nature, 2020

The ATLAS EventIndex for LHC Run 3

EPJ Web of Conferences EDP Sciences 245 (2020) 04017

Authors:

Dario Barberis, Igor Aleksandrov, Evgeny Alexandrov, Zbigniew Baranowski, Gancho Dimitrov, Álvaro Fernández Casaní, Elizabeth J Gallas, Carlos García Montoro, Santiago González de la Hoz, Julius Hrivnac, Andrei Kazymov, Mikhail Mineev, Fedor Prokoshin, Grigori Rybkin, Javier Sánchez, José Salt Cairols, Miguel Villaplana Perez

Measurement of neutrino and antineutrino neutral-current quasielastic-like interactions on oxygen by detecting nuclear de-excitation $γ$-rays

Physical Review D: Particles, Fields, Gravitation and Cosmology American Physical Society (2019)

Authors:

K Abe, R Akutsu, A Ali, C Alt, C Andreopoulos, L Anthony, M Antonova, S Aoki, A Ariga, Y Ashida, ET Atkin, Y Awataguchi, S Ban, M Barbi, GJ Barker, G Barr, C Barry, M Batkiewicz-Kwasniak, A Beloshapkin, F Bench, V Berardi, S Berkman, L Berns, S Bhadra, S Bienstock, A Blondel, S Bolognesi, B Bourguille, SB Boyd, D Brailsford, A Bravar, D Bravo Berguño, C Bronner, 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, 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, O Drapier, J Dumarchez, P Dunne, 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 Gameil, C Giganti, T Golan, M Gonin, A Gorin, M Guigue, DR Hadley, JT Haigh, P Hamacher-Baumann, M Hartz, T Hasegawa, 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, B Jamieson, SJ Jenkins, C Jesús-Valls, M Jiang, S Johnson, P Jonsson, CK Jung, M Kabirnezhad, AC Kaboth, T Kajita, H Kakuno, J Kameda, D Karlen, SP Kasetti, Y Kataoka, T Katori, Y Kato, E Kearns, M Khabibullin, A Khotjantsev, T Kikawa, H Kim, J Kim, S King, J Kisiel, A Knight, A Knox, T Kobayashi, L Koch, T Koga, A Konaka, LL Kormos, Y Koshio, 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, JF Martin, T Maruyama, T Matsubara, K Matsushita, V Matveev, K Mavrokoridis, E Mazzucato, M McCarthy, N McCauley, 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, 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, P Paudyal, M Pavin, D Payne, GC Penn, L Pickering, C Pidcott, 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, A Rychter, K Sakashita, F Sánchez, 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, KM Tsui, T Tsukamoto, M Tzanov, Y Uchida, W Uno, 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

Abstract:

Neutrino- and antineutrino-oxygen neutral-current quasielastic-like interactions are measured at Super-Kamiokande using nuclear de-excitation $\gamma$-rays to identify signal-like interactions in data from a $14.94 \ (16.35)\times 10^{20}$ protons-on-target exposure of the T2K neutrino (antineutrino) beam. The measured flux-averaged cross sections on oxygen nuclei are $\langle \sigma_{\nu {\rm -NCQE}} \rangle = 1.70 \pm 0.17 ({\rm stat.}) ^{+ {\rm 0.51}}_{- {\rm 0.38}} ({\rm syst.}) \times 10^{-38} \ {\rm cm^2/oxygen}$ with a flux-averaged energy of 0.82 GeV and $\langle \sigma_{\bar{\nu} {\rm -NCQE}} \rangle = 0.98 \pm 0.16 ({\rm stat.}) ^{+ {\rm 0.26}}_{- {\rm 0.19}} ({\rm syst.}) \times 10^{-38} \ {\rm cm^2/oxygen}$ with a flux-averaged energy of 0.68 GeV, for neutrinos and antineutrinos, respectively. These results are the most precise to date, and the antineutrino result is the first cross section measurement of this channel. They are compared with various theoretical predictions. The impact on evaluation of backgrounds to searches for supernova relic neutrinos at present and future water Cherenkov detectors is also discussed.

Measurement of neutrino and antineutrino neutral-current quasielasticlike interactions on oxygen by detecting nuclear deexcitation γ rays

Physical Review D American Physical Society 100:11 (2019) 112009

Authors:

K Abe, R Akutsu, A Ali, C Alt, C Andreopoulos, L Anthony, M Antonova, S Aoki, A Ariga, Y Ashida, ET Atkin, Y Awataguchi, S Ban, M Barbi, GJ Barker, G Barr, C Barry, M Batkiewicz-Kwasniak, A Beloshapkin, F Bench, V Berardi, S Berkman, L Berns, S Bhadra, S Bienstock, A Blondel, S Bolognesi, B Bourguille, SB Boyd, D Brailsford, A Bravar, DB Berguño, C Bronner, A Bubak, MB Avanzini, J Calcutt, T Campbell, S Cao, SL Cartwright, A Cervera, A Chappell, C Checchia, D Cherdack, N Chikuma, G Christodoulou, J Coleman, G Collazuol, L Cook, D Coplowe

Abstract:

Neutrino- and antineutrino-oxygen neutral-current quasielasticlike interactions are measured at SuperKamiokande using nuclear deexcitation γ rays to identify signal-like interactions in data from a 14.94ð16.35Þ × 1020 protons-on-target exposure of the T2K neutrino (antineutrino) beam. The measured flux-averaged cross sections on oxygen nuclei are hσν-NCQEi ¼ 1.70 0.17ðstat:Þ þ0.51 −0.38 ðsyst:Þ × 10−38 cm2=oxygen with a fluxaveraged energy of 0.82 GeV and hσν¯-NCQEi ¼ 0.98 0.16ðstat:Þ þ0.26 −0.19 ðsyst:Þ × 10−38 cm2=oxygen with a flux-averaged energy of 0.68 GeV, for neutrinos and antineutrinos, respectively. These results are the most precise to date, and the antineutrino result is the first cross section measurement of this channel. They are compared with various theoretical predictions. The impact on evaluation of backgrounds to searches for supernova relic neutrinos at present and future water Cherenkov detectors is also discussed.