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大亚湾中微子实验的目标是测量中微子混合矩阵中的最小混合角θ13.如果考虑中微子的非标准相互作用(NSIs),中微子的振荡概率公式要做相应的改写,其效应将和θ13纠缠在一起,从而降低了实验对θ13的敏感度(sensitivity).讨论了在NSIs存在的情况下大亚湾实验对θ13的敏感度,发现这个实验不可能同时测量出NSIs和θ13的值.由于当θ13=0时反应堆产生的反中微子将没有振荡现象(NSIs的效应也将消失),如果大亚湾实验测量到了中微子振荡效应,那将表明θ13≠0;但是,由于非零的θ13的效应和NSIs的效应有可能抵消而导致中微子没有振荡.如果大亚湾实验没有测量到中微子振荡,不能排除非零的θ13.
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关键词:
- 中微子非标准相互作用 /
- 大亚湾中微子实验
The goal of the Daya Bay reactor experiment is to determine unknown neutrino mixing angle θ13. The non-standard interactions (NSIs) of the neutrinos will affect the neutrino oscillation probability. In this paper we check the Daya Bay experimental sensitivity to θ13 in the presence of NSIs. Clearly, in this single experiment the values of θ13 and NSIs cannot be determined. The experimental observation of neutrino oscillation indicates a non-zero θ13. But if we do not observe the neutrino oscillation, it will not be meant that the value of θ13 must be zero.[1] Cattadori C, Ferrari N, Pandola L 2005 Nucl. Phys. Proc. Suppl. 143 3
[2] Kamland Collaboration 2003 Phys. Rev. Lett. 90 021802
[3] Kamland Collaboration 2005 Phys. Rev. Lett. 94 081801
[4] Super-Kamiokande Collaboration 1998 Phys. Rev. Lett. 81 1562
[5] Super-Kamiokande Collaboration 2005 Phys. Rev. D 71 112005
[6] Minos Collaboration 2008 Phys.Rev.Lett.101 131802
[7] Huang X J, Li Z J, Wang Y J 2006 Chin. Phy. B 15 229
[8] Zhang J, Liu M Q, Wei B T, Luo Z Q 2008 Acta Phys. Sin. 57 5448 (in Chinese) [张 洁、刘门全、魏丙涛、罗志全 2005 57 5448]
[9] Cao J 2006 Nucl. Phys. Proc. Suppl. 155 229
[10] Daya Bay Collaboration 2007 arXIV:hep-ex/0701029
[11] Grossman Y, 1995 Phys. Lett.B 359 141
[12] Ota T, Sato J, Yamashita N A 2002 Phys. Rev. D 65 0903015
[13] Huber P, Schwetz T, Valle J W F 2002 Phys. Rev. D 66 013006
[14] Kopp J, Lindner M, Ota T, Sato S 2008 Phys. Rev. D 77 013007
[15] Bergmann S, Grossman Y, Pierce D M 2000 Phys. Rev. D 61 053005
[16] Gonzalez-Garcia M C, Grossman Y, Gusso A, Nir Y 2001 Phys. Rev. D 64 096006
[17] Antusch S, Biggio C, Fernandez-Martinez E, Gavela M B, Lopez-Pavon J 2006 Journal High Energy Physics 10 084
[18] Fernandez-Martinez E, Gavela M B, J. López-Pavón J, Yasuda O 2007 Phys. Lett. B 649 427
[19] Goswami S, Ota T 2008 Phys. Rev. D 78 033012
[20] Xing Z Z, Zhou S 2008 Phys. Lett. B 666 166
[21] Luo S 2008 Phys. Rev. D 78 016006
[22] Altarelli G, Meloni D 2008 arXiv:0809.1041
[23] Ohlsson T, Zhang H 2008 arXiv:0809.4835
[24] Maltoni M, Schwetz T, Tortola M A, Valle J W F 2004 New J. Phys. 6 122
[25] Fogli G L, Lisi E, Marrone A, Melchiorri A, Palazzo A, Serra P, Silk J, Slosar A 2007 Phys. Rev. D 75 053001
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[1] Cattadori C, Ferrari N, Pandola L 2005 Nucl. Phys. Proc. Suppl. 143 3
[2] Kamland Collaboration 2003 Phys. Rev. Lett. 90 021802
[3] Kamland Collaboration 2005 Phys. Rev. Lett. 94 081801
[4] Super-Kamiokande Collaboration 1998 Phys. Rev. Lett. 81 1562
[5] Super-Kamiokande Collaboration 2005 Phys. Rev. D 71 112005
[6] Minos Collaboration 2008 Phys.Rev.Lett.101 131802
[7] Huang X J, Li Z J, Wang Y J 2006 Chin. Phy. B 15 229
[8] Zhang J, Liu M Q, Wei B T, Luo Z Q 2008 Acta Phys. Sin. 57 5448 (in Chinese) [张 洁、刘门全、魏丙涛、罗志全 2005 57 5448]
[9] Cao J 2006 Nucl. Phys. Proc. Suppl. 155 229
[10] Daya Bay Collaboration 2007 arXIV:hep-ex/0701029
[11] Grossman Y, 1995 Phys. Lett.B 359 141
[12] Ota T, Sato J, Yamashita N A 2002 Phys. Rev. D 65 0903015
[13] Huber P, Schwetz T, Valle J W F 2002 Phys. Rev. D 66 013006
[14] Kopp J, Lindner M, Ota T, Sato S 2008 Phys. Rev. D 77 013007
[15] Bergmann S, Grossman Y, Pierce D M 2000 Phys. Rev. D 61 053005
[16] Gonzalez-Garcia M C, Grossman Y, Gusso A, Nir Y 2001 Phys. Rev. D 64 096006
[17] Antusch S, Biggio C, Fernandez-Martinez E, Gavela M B, Lopez-Pavon J 2006 Journal High Energy Physics 10 084
[18] Fernandez-Martinez E, Gavela M B, J. López-Pavón J, Yasuda O 2007 Phys. Lett. B 649 427
[19] Goswami S, Ota T 2008 Phys. Rev. D 78 033012
[20] Xing Z Z, Zhou S 2008 Phys. Lett. B 666 166
[21] Luo S 2008 Phys. Rev. D 78 016006
[22] Altarelli G, Meloni D 2008 arXiv:0809.1041
[23] Ohlsson T, Zhang H 2008 arXiv:0809.4835
[24] Maltoni M, Schwetz T, Tortola M A, Valle J W F 2004 New J. Phys. 6 122
[25] Fogli G L, Lisi E, Marrone A, Melchiorri A, Palazzo A, Serra P, Silk J, Slosar A 2007 Phys. Rev. D 75 053001
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