Measurement of the neutron lifetime using a gravitational trap and a low-temperature Fomblin coating

被引：259

作者：

Serebrov, A

Varlamov, V

Kharitonov, A

Fomin, A

Pokotilovski, Y

Geltenbort, P

Butterworth, J

Krasnoschekova, I

Lasakov, M

Tal'daev, R

Vassiljev, A

Zherebtsov, O

机构：

[1] Russian Acad Sci, Petersburg Nucl Phys Inst, Gatchina 188300, Russia

[2] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

来源：

PHYSICS LETTERS B | 2005年 / 605卷 / 1-2期

基金：

俄罗斯基础研究基金会;

关键词：

ultracold neutrons; neutron lifetime;

D O I：

10.1016/j.physletb.2004.11.013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new value for the neutron lifetime of 878.5 +/- 0.7(stat) +/- 0.3(syst). This result differs from the world average value (885.7 +/- 0.8 s) by 6.5 standard deviations and by 5.6 standard deviations from the previous most precise result [Phys. Lett. B 483 (2000) 15]. However, this new value for the neutron lifetime together with a beta-asymmetry in neutron decay, A(0), of -0.1189(7) [Phys. Rev. Lett. 88 (2002) 211801] is in a good agreement with the Standard Model. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：72 / 78

页数：7

共 10 条

[1] Quark mixing, CKM unitarity -: The unitarity problem [J].

Abele, H ;

Barberio, E ;

Dubbers, D ;

Glück, F ;

Hardy, JC ;

Marciano, WJ ;

Serebrov, A ;

Severijns, N .

EUROPEAN PHYSICAL JOURNAL C, 2004, 33 (01) :1-8

[2] Is the unitarity of the quark-mixing CKM matrix violated in neutron β-decay? -: art. no. 211801 [J].

Abele, H ;

Hoffmann, MA ;

Baessler, S ;

Dubbers, D ;

Glück, F ;

Müller, U ;

Nesvizhevsky, V ;

Reich, J ;

Zimmer, O .

PHYSICAL REVIEW LETTERS, 2002, 88 (21) :4

[3] Neutron life time value measured by storing ultracold neutrons with detection of inelastically scattered neutrons [J].

Arzumanov, S ;

Bondarenko, L ;

Chernavsky, S ;

Drexel, W ;

Fomin, A ;

Geltenbort, P ;

Morozov, V ;

Panin, Y ;

Pendlebury, J ;

Schreckenbach, K .

PHYSICS LETTERS B, 2000, 483 (1-3) :15-22

[4] Review of particle physics [J].

Eidelman, S ;

Hayes, KG ;

Olive, KA ;

Aguilar-Benitez, M ;

Amsler, C ;

Asner, D ;

Babu, KS ;

Barnett, RM ;

Beringer, J ;

Burchat, PR ;

Carone, CD ;

Caso, C ;

Conforto, G ;

Dahl, O ;

D'Ambrosio, G ;

Doser, M ;

Feng, JL ;

Gherghetta, T ;

Gibbons, L ;

Goodman, M ;

Grab, C ;

Groom, DE ;

Gurtu, A ;

Hagiwara, K ;

Hernández-Rey, JJ ;

Hikasa, K ;

Honscheid, K ;

Jawahery, H ;

Kolda, C ;

Kwon, Y ;

Mangano, ML ;

Manohar, AV ;

March-Russell, J ;

Masoni, A ;

Miquel, R ;

Mönig, K ;

Murayama, H ;

Nakamura, K ;

Navas, S ;

Pape, L ;

Patrignani, C ;

Piepke, A ;

Raffelt, G ;

Roos, M ;

Tanabashi, M ;

Terning, J ;

Törnqvist, NA ;

Trippe, TG ;

Vogel, P ;

Wohl, CG .

PHYSICS LETTERS B, 2004, 592 (1-4) :1-1109

[5]

Nesvizhevskii V. V., 1992, Soviet Physics - JETP, V75, P405

[6] Investigation of liquid fluoropolymers as possible materials for low-temperature liquid-wall chambers for ultracold neutron storage [J].

Pokotilovski, YN .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2003, 96 (02) :172-179

[7] Possibility for low temperature fluid-wall neutron bottle with very low neutron upscattering losses [J].

Pokotilovski, YN .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1999, 425 (1-2) :320-322

[8]

SEREBROV A, MUCLEX0408010

[9]

SEREBROV A, NUCLEX0408009

[10] Experimental study of quasi-elastic scattering of ultracold neutrons [J].

Steyerl, A ;

Yerozolimsky, BG ;

Serebrov, AP ;

Geltenbort, P ;

Achiwa, N ;

Pokotilovski, YN ;

Kwon, O ;

Lasakov, MS ;

Krasnoshchokova, IA ;

Vasilyev, AV .

EUROPEAN PHYSICAL JOURNAL B, 2002, 28 (03) :299-304

← 1 →