Measurement of the intrinsic electron neutrino component in the T2K neutrino beam with the ND280 detector

6533b831fe1ef96bd1298516

RESEARCH PRODUCT

Measurement of the intrinsic electron neutrino component in the T2K neutrino beam with the ND280 detector

K Abe J Adam H Aihara T Akiri C Andreopoulos S Aoki A Ariga T Ariga S Assylbekov D Autiero M Barbi Gj Barker G Barr M Bass M Batkiewicz F Bay Sw Bentham V Berardi Be Berger S Berkman I Bertram S Bhadra Fdm Blaszczyk A Blondel C Bojechko S Bordoni Sb Boyd D Brailsford A Bravar C Bronner N Buchanan Rg Calland J Caravaca Rodriguez Sl Cartwright R Castillo Mg Catanesi A Cervera D Cherdack G Christodoulou A Clifton J Coleman Sj Coleman G Collazuol K Connolly L Cremonesi A Dabrowska I Danko R Das S Davis P De Perio G De Rosa T Dealtry Sr Dennis C Densham F Di Lodovico S Di Luise O Drapier T Duboyski K Duffy F Dufour J Dumarchez S Dytman M Dziewiecki S Emery A Ereditato L Escudero Aj Finch L Floetotto M Friend Y Fujii Y Fukuda Ap Furmanski V Galymov S Giffin C Giganti K Gilje D Goeldi T Golan Jj Gomez-cadenas M Gonin N Grant D Gudin Dr Hadley A Haesler Md Haigh P Hamilton D Hansen T Hara M Hartz T Hasegawa Nc Hastings Y Hayato C Hearty Rl Helmer M Hierholzer J Hignight A Hillairet A Himmel T Hiraki S Hirota J Holeczek S Horikawa K Huang Ak Ichikawa K Ieki M Ieva M Ikeda J Imber J Insler Tj Irvine T Ishida T Ishii Sj Ives E Iwai K Iyogi A Izmaylov A Jacob B Jamieson Ra Johnson Jh Jo P Jonsson Ck Jung M Kabirnezhad Ac Kaboth T Kajita H Kakuno J Kameda Y Kanazawa D Karlen I Karpikov E Kearns M Khabibullin A Khotjantsev D Kielczewska T Kikawa A Kilinski J Kim J Kisiel P Kitching T Kobayashi L Koch A Kolaceke A Konaka Ll Kormos A Korzenev K Koseki Y Koshio I Kreslo W Kropp H Kubo Y Kudenko S Kumaratunga R Kurjata T Kutter J Lagoda K Laihem I Lamont E Larkin M Laveder M Lawe M Lazos Kp Lee T Lindner C Lister Rp Litchfield A Longhin L Ludovici M Macaire L Magaletti K Mahn M Malek S Manly Ad Marino J Marteau Jf Martin T Maruyama J Marzec El Mathie V Matveev K Mavrokoridis E Mazzucato M Mccarthy N Mccauley Ks Mcfarland C Mcgrew C Metelko M Mezzetto P Mijakowski Ca Miller A Minamino O Mineev S Mine A Missert M Miura L Monfregola S Moriyama Th A Mueller A Murakami M Murdoch S Murphy J Myslik T Nagasaki T Nakadaira M Nakahata T Nakai K Nakamura S Nakayama T Nakaya K Nakayoshi D Naples C Nielsen M Nirkko K Nishikawa Y Nishimura Hm O'keeffe R Ohta K Okumura T Okusawa W Oryszczak Sm Oser Ra Owen Y Oyama V Palladino J Palomino V Paolone D Payne O Perevozchikov Jd Perkin Y Petrov L Pickard Es Pinzon Guerra C Pistillo P Plonski E Poplawska B Popov M Posiadala J-m Poutissou R Poutissou P Przewlocki B Quilain E Radicioni Pn Ratoff M Ravonel Mam Rayner A Redij M Reeves E Reinherz-aronis F Retiere A Robert Pa Rodrigues P Rojas E Rondio S Roth A Rubbia D Ruterbories R Sacco Ken Sakashita F Sanchez F Sato E Scantamburlo K Scholberg S Schoppmann J Schwehr M Scott Y Seiya T Sekiguchi H Sekiya D Sgalaberna M Shiozawa S Short Y Shustrov P Sinclair B Smith Rj Smith M Smy Jt Sobczyk H Sobel M Sorel L Southwell P Stamoulis J Steinmann B Still Y Suda A Suzuki K Suzuki Sy Suzuki Y Suzuki T Szeglowski R Tacik M Tada S Takahashi A Takeda Y Takeuchi Hk Tanaka Ha Tanaka Mm Tanaka D Terhorst R Terri Lf Thompson A Thorley S Tobayama W Toki T Tomura Y Totsuka C Touramanis T Tsukamoto M Tzanov Y Uchida K Ueno A Vacheret M Vagins G Vasseur T Wachala Av Waldron Cw Walter D Wark Mo Wascko A Weber R Wendell Rj Wilkes Mj Wilking C Wilkinson Z Williamson Jr Wilson Rj Wilson T Wongjirad Y Yamada K Yamamoto C Yanagisawa S Yen N Yershov M Yokoyama T Yuan M Yu A Zalewska J Zalipska L Zambelli K Zaremba M Ziembicki Ed Zimmerman M Zito J Zmuda T2k Collaboration

subject

Nuclear and High Energy Physics Particle physics Physics::Instrumentation and Detectors Solar neutrino Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences 01 natural sciences 7. Clean energy High Energy Physics - Experiment Nuclear physics High Energy Physics - Experiment (hep-ex)0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]010306 general physics Neutrino oscillation Physics 010308 nuclear & particles physics High Energy Physics::Phenomenology T2K experiment Física Solar neutrino problem 3. Good health Cosmic neutrino background Neutrino detector Measurements of neutrino speed High Energy Physics::Experiment Neutrino

description

The T2K experiment has reported the first observation of the appearance of electron neutrinos in a muon neutrino beam. The main and irreducible background to the appearance signal comes from the presence in the neutrino beam of a small intrinsic component of electron neutrinos originating from muon and kaon decays. In T2K, this component is expected to represent 1.2% of the total neutrino flux. A measurement of this component using the near detector (ND280), located 280 m from the target, is presented. The charged current interactions of electron neutrinos are selected by combining the particle identification capabilities of both the time projection chambers and electromagnetic calorimeters of ND280. The measured ratio between the observed electron neutrino beam component and the prediction is 1.01+-0.10 providing a direct confirmation of the neutrino fluxes and neutrino cross section modeling used for T2K neutrino oscillation analyses. Electron neutrinos coming from muons and kaons decay are also separately measured, resulting in a ratio with respect to the prediction of 0.68+-0.30 and 1.10+-0.14, respectively.

year	journal	country	edition	language
2014-05-05

10.1103/physrevd.89.092003 http://arxiv.org/abs/1403.2552