Improved measurement of neutrino oscillation parameters by the NOvA experiment

被引：87

作者：

Acero, M. A. ^{[2
]}

Adamson, P. ^{[12
]}

Aliaga, L. ^{[12
]}

Anfimov, N. ^{[26
]}

Antoshkin, A. ^{[26
]}

Arrieta-Diaz, E. ^{[28
]}

Asquith, L. ^{[41
]}

Aurisano, A. ^{[6
]}

Back, A. ^{[20
,24
]}

Backhouse, C. ^{[45
]}

Baird, M. ^{[20
,41
,46
]}

Balashov, N. ^{[26
]}

Baldi, P. ^{[25
]}

Bambah, B. A. ^{[17
]}

Bashar, S. ^{[44
]}

Bays, K. ^{[4
,19
]}

Bernstein, R. ^{[12
]}

Bhatnagar, V ^{[34
]}

Bhattarai, D. ^{[32
]}

Bhuyan, B. ^{[14
]}

Bian, J. ^{[25
,31
]}

Blair, J. ^{[16
]}

Booth, A. C. ^{[41
]}

Bowles, R. ^{[20
]}

Bromberg, C. ^{[29
]}

Buchanan, N. ^{[8
]}

Butkevich, A. ^{[22
]}

Calvez, S. ^{[8
]}

Carroll, T. J. ^{[43
,49
]}

Catano-Mur, E. ^{[48
]}

Choudhary, B. C. ^{[10
]}

Christensen, A. ^{[8
]}

Coan, T. E. ^{[39
]}

Colo, M. ^{[48
]}

Cremonesi, L. ^{[36
,45
]}

Davies, G. S. ^{[20
,32
]}

Derwent, P. F. ^{[12
]}

Ding, P. ^{[12
]}

Djurcic, Z. ^{[1
]}

Dolce, M. ^{[44
]}

Doyle, D. ^{[8
]}

Tonguino, D. Duenas ^{[6
]}

Dukes, E. C. ^{[46
]}

Duyang, H. ^{[38
]}

Ehrlich, R. ^{[46
]}

Elkins, M. ^{[24
]}

Ewart, E. ^{[20
]}

Feldman, G. J. ^{[15
]}

Filip, P. ^{[23
]}

Franc, J. ^{[9
]}

机构：

[1] Argonne Natl Lab, Argonne, IL 60439 USA

[2] Univ Atlantico, Carrera 30 8-49, Puerto Colombia, Atlantico, Colombia

[3] Banaras Hindu Univ, Inst Sci, Dept Phys, Varanasi 221005, Uttar Pradesh, India

[4] CALTECH, Pasadena, CA 91125 USA

[5] Charles Univ Prague, Fac Math & Phys, Inst Particle & Nucl Phys, Prague, Czech Republic

[6] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

[7] Cochin Univ Sci & Technol, Dept Phys, Kochi 682022, India

[8] Colorado State Univ, Dept Phys, Ft Collins, CO 80523 USA

[9] Czech Tech Univ, Brehova 7, Prague 11519 1, Czech Republic

[10] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India

[11] Erciyes Univ, Dept Phys, TR-38030 Kayseri, Turkey

[12] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[13] Univ Fed Goias, Inst Fis, BR-74690900 Goiania, Go, Brazil

[14] IIT Guwahati, Dept Phys, Gauhati 781039, India

[15] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[16] Univ Houston, Dept Phys, Houston, TX 77204 USA

[17] Univ Hyderabad, Sch Phys, Hyderabad 500046, India

[18] IIT Hyderabad, Dept Phys, Hyderabad 502205, India

[19] IIT, Chicago, IL 60616 USA

[20] Indiana Univ, Bloomington, IN 47405 USA

[21] Czech Acad Sci, Inst Comp Sci, Prague 18207, Czech Republic

[22] Acad Sci, Inst Nucl Res Russia, 7a 60th October Anniversary Prospect, Moscow 117312, Russia

[23] Czech Acad Sci, Inst Phys, Prague 18221, Czech Republic

[24] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[25] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[26] Joint Inst Nucl Res, Moscow 141980, Russia

[27] Lebedev Phys Inst, Nucl Phys & Astrophys Div, Leninsky Prospect 53, Moscow 119991, Russia

[28] Univ Magdalena, Carrera 32 22-08, Santa Marta, Colombia

[29] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[30] Univ Minnesota, Dept Phys & Astron, Duluth, MN 55812 USA

[31] Univ Minnesota Twin Cities, Sch Phys & Astron, Minneapolis, MN 55455 USA

[32] Univ Mississippi, University, MS 38677 USA

[33] Natl Inst Sci Educ & Res, Khurja 752050, Odisha, India

[34] Panjab Univ, Dept Phys, Chandigarh 160014, India

[35] Univ Pittsburgh, Dept Phys, Pittsburgh, PA 15260 USA

[36] Queen Mary Univ London, Sch Phys & Astron, London E1 4NS, England

[37] Univ S Alabama, Dept Phys, Mobile, AL 36688 USA

[38] Univ South Carolina, Dept Phys & Astron, Columbia, SC 29208 USA

[39] Southern Methodist Univ, Dept Phys, Dallas, TX 75275 USA

[40] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[41] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England

[42] Syracuse Univ, Dept Phys, Syracuse, NY 13210 USA

[43] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

[44] Tufts Univ, Dept Phys & Astron, Medford, MA 02155 USA

[45] UCL, Phys & Astron Dept, Gower St, London WC1E 6BT, England

[46] Univ Virginia, Dept Phys, Charlottesville, VA 22904 USA

[47] Wichita State Univ, Dept Math Stat & Phys, Wichita, KS 67206 USA

[48] William & Mary, Dept Phys, Williamsburg, VA 23187 USA

[49] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW D | 2022年 / 106卷 / 03期

关键词：

TOTAL CROSS-SECTIONS; CP VIOLATION; PIONS; ABSORPTION; SCATTERING; PROTONS; NUCLEI; LEPTOGENESIS; BARYOGENESIS; ANTIPROTONS;

D O I：

10.1103/PhysRevD.106.032004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present new nu(mu) -> nu(e), nu(mu) -> nu(mu), (nu) over bar (mu) -> (nu) over bar (e), and (nu) over bar (mu) -> (nu) over bar (mu) oscillation measurements by the NOvA experiment, with a 50% increase in neutrino-mode beam exposure over the previously reported results. The additional data, combined with previously published neutrino and antineutrino data, are all analyzed using improved techniques and simulations. A joint fit to the nu(e), nu(mu), (nu) over bar (e), and (nu) over bar (mu), candidate samples within the 3-flavor neutrino oscillation framework continues to yield a best-fit point in the normal mass ordering and the upper octant of the theta(23) mixing angle, with Delta m(32)(2) = (2.41 +/- 0.07) x 10(-3) eV(2) and sin(2)theta(23) = 0.57(-0.04)(+0.03). The data disfavor combinations of oscillation parameters that give rise to a large asymmetry in the rates of nu(e) and (nu) over bar (e) appearance. This includes values of the charge parity symmetry (CP) violating phase in the vicinity of delta(CP) = pi/2 which arc excluded by > 3 sigma for the inverted mass ordering, and values around delta(CP) = 3 pi/2 in the normal ordering which are disfavored at 2 sigma confidence.

引用

页数：12

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