A search for the analogue to Cherenkov radiation by high energy neutrinos at superluminal speeds in ICARUS

被引：21

作者：

Antonello, M. ^{[2
]}

Aprili, P. ^{[2
]}

Baibussinov, B. ^{[3
,4
]}

Ceolin, M. Baldo ^{[3
,4
]}

Benetti, P. ^{[5
,6
]}

Calligarich, E. ^{[5
,6
]}

Canci, N. ^{[2
]}

Carbonara, F. ^{[7
,8
]}

Centro, S. ^{[3
,4
]}

Cesana, A. ^{[10
,11
]}

Cieslik, K. ^{[12
]}

Cline, D. B. ^{[13
]}

Cocco, A. G. ^{[7
,8
]}

Dabrowska, A. ^{[12
]}

Dequal, D. ^{[3
,4
]}

Dermenev, A. ^{[14
]}

Dolfini, R. ^{[5
,6
]}

Farnese, C. ^{[3
,4
]}

Fava, A. ^{[3
,4
]}

Ferrari, A. ^{[1
]}

Fiorillo, G. ^{[7
,8
]}

Gibin, D. ^{[3
,4
]}

Berzolari, A. Gigli ^{[5
,6
]}

Gninenko, S. ^{[14
]}

Guglielmi, A. ^{[3
,4
]}

Haranczyk, M. ^{[12
]}

Holeczek, J. ^{[15
]}

Ivashkin, A. ^{[14
]}

Kisiel, J. ^{[15
]}

Kochanek, I. ^{[15
]}

Lagoda, J. ^{[16
]}

Mania, S. ^{[15
]}

Mannocchi, G. ^{[17
]}

Menegolli, A. ^{[5
,6
]}

Meng, G. ^{[3
,4
]}

Montanari, C. ^{[5
,6
]}

Otwinowski, S. ^{[13
]}

Periale, L. ^{[17
]}

Piazzoli, A. ^{[5
,6
]}

Picchi, P. ^{[17
]}

Pietropaolo, F. ^{[3
,4
]}

Plonski, P. ^{[18
]}

Rappoldi, A. ^{[5
,6
]}

Raselli, G. L. ^{[5
,6
]}

Rossella, M. ^{[5
,6
]}

Rubbia, C. ^{[2
]}

Sala, P. R. ^{[10
,11
]}

Scantamburlo, E. ^{[9
]}

Scaramelli, A. ^{[10
,11
]}

Segreto, E. ^{[2
]}

机构：

[1] CERN, CH-1211 Geneva 23, Switzerland

[2] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Assergi, AQ, Italy

[3] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy

[4] Univ Padua, Ist Nazl Fis Nucl, I-35131 Padua, Italy

[5] Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy

[6] Univ Pavia, Ist Nazl Fis Nucl, I-27100 Pavia, Italy

[7] Univ Naples Federico II, Naples, Italy

[8] Ist Nazl Fis Nucl, Dipartimento Sci Fis, I-80125 Naples, Italy

[9] Univ Aquila, Dipartimento Fis, I-67100 Laquila, Italy

[10] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

[11] Politecn Milan, I-20133 Milan, Italy

[12] Polish Acad Sci, Inst Nucl Phys, Krakow, Poland

[13] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA USA

[14] INR RAS, Moscow 117312, Russia

[15] Univ Silesia, Inst Phys, PL-40007 Katowice, Poland

[16] Natl Ctr Nucl Res, PL-05400 Otwock, Poland

[17] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[18] Warsaw Univ Technol, Inst Radioelect, PL-00665 Warsaw, Poland

[19] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy

[20] Boston Univ, Dept Phys, Boston, MA 02215 USA

来源：

PHYSICS LETTERS B | 2012年 / 711卷 / 3-4期

关键词：

MUONS; BEAM;

D O I：

10.1016/j.physletb.2012.04.014

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The OPERA Collaboration (2011) [1] has reported evidence of superluminal vi, propagation between CERN and the LNGS. Cohen and Glashow (2011) [2] argued that such neutrinos should lose energy by producing photons and e(+)e(-) pairs, through Z(0) mediated processes analogous to Cherenkov radiation. In terms of the parameter delta equivalent to (v(v)(2) - v(c)(2))/v(c)(2), the OPERA result corresponds to delta approximate to 5 . 10(-5). For this value (note that (v(v) - v(c))/v(c) approximate to delta/2 approximate to 2.5 . 10(-5)) of delta, a very significant deformation of the neutrino energy spectrum and an abundant production of photons and e(+)e(-) pairs should be observed at LNGS. We present an analysis based on the 2010 and part of the 2011 data sets from the ICARUS experiment, located at Gran Sasso National Laboratory and using the same neutrino beam from CERN. We find that the rates and deposited energy distributions of neutrino events in ICARUS agree with the expectations for an unperturbed spectrum of the CERN neutrino beam, as also reported by OPERA. Our results therefore refute a superluminal interpretation of the OPERA result according to the Cohen and Glashow (2011) prediction [2] for a weak current analog to Cherenkov radiation. In a dedicated search, no superluminal Cherenkov-like e(+)e(-) pair or gamma emission event has been directly observed inside the fiducial volume of the "bubble chamber-like" ICARUS TPC-LAr detector, setting the much stricter limit of delta < 2.5 . 10(-8) at the 90% confidence level, comparable with the one due to the observations from the SN1987a (M.J. Longo, 1987 [4]). The observations of high energy neutrino events by Super-Kamiokande and Ice Cube are also pointing to a much stricter limit on delta. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：270 / 275

页数：6