نتایج جستجو برای: neutrino

تعداد نتایج: 21929  

1995
M. Honda T. Kajita K. Kasahara S. Midorikawa

Atmospheric neutrino{ uxes are calculated over the wide energy range from 30 MeV to 3,000 GeV for the study of neutrino{physics using the data from underground neutrino{detectors. In this calculation, a full Monte Carlo method is employed for low energy neutrinos (30 MeV { 3 GeV), while a hybrid method is used for high energy neutrinos (1 { 3,000 GeV). At low energies, the ratio ( e + e)=( +  ...

1996
R. Foot R. R. Volkas

The assumption of exact, unbroken parity symmetry leads directly to a simple pre-dictive resolution of the atmospheric and solar neutrino puzzles. This is because the existence of this symmetry implies the existence of a set of mirror neutrinos which must mix maximally with the known neutrinos if neutrinos have mass. The maximal mixing of the electron neutrino with the mirror electron neutrino ...

2006
TODD A. THOMPSON

I discuss neutrino production in supernovae (SNe) and the detection of both Galactic core collapse events and the diffuse extra-galactic MeV neutrino background expected from the integrated history of star formation. In particular, I consider what processes might affect our expectations for both. I focus on “rapid” rotation, defined as leading to millisecond initial neutron star spin periods. R...

2006
Thierry Lasserre Henry W. Sobel

We review the status and the results of reactor neutrino experiments, that toe the cutting edge of neutrino research. Short baseline experiments have provided the measurement of the reactor neutrino spectrum, and are still searching for important phenomena such as the neutrino magnetic moment. They could open the door to the measurement of coherent neutrino scattering in a near future. Middle a...

Journal: :Physical review letters 2013
K Abe J Adam H Aihara T Akiri C Andreopoulos S Aoki A Ariga T Ariga S Assylbekov D Autiero M Barbi G J Barker G Barr M Bass M Batkiewicz F Bay S W Bentham V Berardi B E Berger S Berkman I Bertram S Bhadra F D M Blaszczyk A Blondel C Bojechko S Bordoni S B Boyd D Brailsford A Bravar C Bronner N Buchanan R G Calland J Caravaca Rodríguez S L Cartwright R Castillo M G Catanesi A Cervera D Cherdack G Christodoulou A Clifton J Coleman S J Coleman G Collazuol K Connolly L Cremonesi A Curioni A Dabrowska I Danko R Das S Davis P de Perio G De Rosa T Dealtry S R 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 A J Finch E Frank M Friend Y Fujii Y Fukuda A P Furmanski V Galymov A Gaudin S Giffin C Giganti K Gilje T Golan J J Gomez-Cadenas M Gonin N Grant D Gudin D R Hadley A Haesler M D Haigh P Hamilton D Hansen T Hara M Hartz T Hasegawa N C Hastings Y Hayato C Hearty R L Helmer M Hierholzer J Hignight A Hillairet A Himmel T Hiraki S Hirota J Holeczek S Horikawa K Huang A K Ichikawa K Ieki M Ieva M Ikeda J Imber J Insler T J Irvine T Ishida T Ishii S J Ives K Iyogi A Izmaylov A Jacob B Jamieson R A Johnson J H Jo P Jonsson K K Joo C K Jung A C 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 S B Kim J Kisiel P Kitching T Kobayashi G Kogan A Kolaceke A Konaka L L 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 M Laveder M Lawe M Lazos K P Lee C Licciardi I T Lim T Lindner C Lister R P Litchfield A Longhin G D Lopez L Ludovici M Macaire L Magaletti K Mahn M Malek S Manly A D Marino J Marteau J F Martin T Maruyama J Marzec P Masliah E L Mathie V Matveev K Mavrokoridis E Mazzucato M McCarthy N McCauley K S McFarland C McGrew C Metelko P Mijakowski C A 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 H M O'Keeffe R Ohta K Okumura T Okusawa W Oryszczak S M Oser M Otani R A Owen Y Oyama M Y Pac V Palladino V Paolone D Payne G F Pearce O Perevozchikov J D Perkin Y Petrov E S Pinzon Guerra C Pistillo P Plonski E Poplawska B Popov M Posiadala J-M Poutissou R Poutissou P Przewlocki B Quilain E Radicioni P N Ratoff M Ravonel M A M Rayner A Redij M Reeves E Reinherz-Aronis F Retiere A Robert P A Rodrigues E Rondio S Roth A Rubbia D Ruterbories R Sacco K Sakashita F Sánchez F Sato E Scantamburlo K Scholberg J Schwehr M Scott Y Seiya T Sekiguchi H Sekiya D Sgalaberna M Shiozawa S Short Y Shustrov P Sinclair B Smith R J Smith M Smy J T Sobczyk H Sobel M Sorel L Southwell P Stamoulis J Steinmann B Still Y Suda A Suzuki K Suzuki S Y Suzuki Y Suzuki T Szeglowski R Tacik M Tada S Takahashi A Takeda Y Takeuchi H K Tanaka H A Tanaka M M Tanaka I J Taylor D Terhorst R Terri L F 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 A V Waldron C W Walter D Wark M O Wascko A Weber R Wendell R J Wilkes M J Wilking C Wilkinson Z Williamson J R Wilson R J Wilson T Wongjirad Y Yamada K Yamamoto C Yanagisawa S Yen N Yershov M Yokoyama T Yuan A Zalewska J Zalipska L Zambelli K Zaremba M Ziembicki E D Zimmerman M Zito J Zmuda

The T2K Collaboration reports a precision measurement of muon neutrino disappearance with an off-axis neutrino beam with a peak energy of 0.6 GeV. Near detector measurements are used to constrain the neutrino flux and cross section parameters. The Super-Kamiokande far detector, which is 295 km downstream of the neutrino production target, collected data corresponding to 3.01×10(20) protons on t...

Journal: :Physical review letters 2003
M H Ahn S Aoki H Bhang S Boyd D Casper J H Choi S Fukuda Y Fukuda W Gajewski T Hara M Hasegawa T Hasegawa Y Hayato J Hill A K Ichikawa A Ikeda T Inagaki T Ishida T Ishii M Ishitsuka Y Itow T Iwashita H I Jang J S Jang E J Jeon C K Jung T Kajita J Kameda K Kaneyuki I Kato E Kearns A Kibayashi D Kielczewska K Kobayashi B J Kim C O Kim J Y Kim S B Kim T Kobayashi M Kohama Y Koshio W R Kropp J G Learned S H Lim I T Lim H Maesaka K Martens T Maruyama S Matsuno C Mauger C McGrew S Mine M Miura K Miyano S Moriyama M Nakahata K Nakamura I Nakano F Nakata T Nakaya S Nakayama T Namba K Nishikawa S Nishiyama S Noda A Obayashi A Okada T Ooyabu Y Oyama M Y Pac H Park M Sakuda N Sakurai N Sasao K Scholberg E Sharkey M Shiozawa H So H W Sobel A Stachyra J L Stone Y Suga L R Sulak A Suzuki Y Suzuki Y Takeuchi N Tamura T Toshito Y Totsuka M R Vagins C W Walter R J Wilkes S Yamada S Yamamoto C Yanagisawa H Yokoyama J Yoo M Yoshida J Zalipska

The K2K experiment observes indications of neutrino oscillation: a reduction of nu(mu) flux together with a distortion of the energy spectrum. Fifty-six beam neutrino events are observed in Super-Kamiokande (SK), 250 km from the neutrino production point, with an expectation of 80.1(+6.2)(-5.4). Twenty-nine one ring mu-like events are used to reconstruct the neutrino energy spectrum, which is b...

2000
David O. Caldwell George M. Fuller Yong-Zhong Qian

A light sterile neutrino species has been introduced to explain simultaneously the solar and atmospheric neutrino puzzles and the results of the LSND experiment, while providing for a hot component of dark matter. Employing this scheme of neutrino masses and mixings, we show how matter-enhanced active-sterile (νμ,τ ⇀↽ νs) neutrino transformation followed by active-active (νμ,τ ⇀↽ νe) neutrino t...

1994
A. Yu. Ignatiev G. C. Joshi

It has recently been shown that the neutrino can have non-zero electric charge in a number of gauge theories, including the Minimal Standard Model. Assuming non-zero neutrino charge, we develop a new approach to the solar neutrino problem. The key idea is that the charged neutrinos will be deflected by the Lorentz force while they are crossing the solar magnetic fields. Such a deflection will r...

2006
James Jenkins

Precision tests of the standard model are essential for constraining models of new physics. Neutrino–electron elastic scattering offers a clean probe into many electroweak effects that are complimentary to the more canonical measurements done at collider facilities. Such reactions are rare, even as compared with the already tiny cross-sections for neutrino–nucleon scattering, and competitive pr...

2008
Tsuyoshi NAKAYA

Knowledge of neutrino interactions with a nuclear target at the neutrino energy around sub-GeV is recently getting more and more important as necessary information for accelerator based neutrino oscillation experiments. A study of neutrino interactions contains rich physics of neutrinos with nucleus, and is used to reveal the properties of neutrinos in the oscillation measurements. We review th...

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