First direct limits on lightly ionizing particles with electric charge less than e/6

While the standard model of particle physics does not include free particles with fractional charge, experimental searches have not ruled out their existence. We report results from the Cryogenic Dark Matter Search (CDMS II) experiment that give the first direct-detection limits for cosmogenically p...

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Bibliographic Details
Published in:Physical review letters 2015-03, Vol.114 (11), p.111302-111302, Article 111302
Main Authors: Agnese, R, Anderson, A J, Balakishiyeva, D, Basu Thakur, R, Bauer, D A, Billard, J, Borgland, A, Bowles, M A, Brandt, D, Brink, P L, Bunker, R, Cabrera, B, Caldwell, D O, Cerdeno, D G, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Crewdson, C H, Cushman, P, Daal, M, Di Stefano, P C F, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Godfrey, G L, Golwala, S R, Hall, J, Harris, H R, Hertel, S A, Hofer, T, Holmgren, D, Hsu, L, Huber, M E, Jastram, A, Kamaev, O, Kara, B, Kelsey, M H, Kennedy, A, Kiveni, M, Koch, K, Leder, A, Loer, B, Lopez Asamar, E, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, K A, Mirabolfathi, N, Moffatt, R A, Moore, D C, Nelson, H, Nelson, R H, Ogburn, R W, Page, K, Page, W A, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Rogers, H E, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, R W, Scorza, S, Serfass, B, Shank, B, Speller, D, Upadhyayula, S, Villano, A N, Welliver, B, Wright, D H, Yellin, S, Yen, J J, Young, B A, Zhang, J
Format: Article
Language:English
Subjects:
Charge
Dark matter
Electric charge
Mathematical models
Relativistic particles
Searching
Towers
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Summary:While the standard model of particle physics does not include free particles with fractional charge, experimental searches have not ruled out their existence. We report results from the Cryogenic Dark Matter Search (CDMS II) experiment that give the first direct-detection limits for cosmogenically produced relativistic particles with electric charge lower than e/6. A search for tracks in the six stacked detectors of each of two of the CDMS II towers finds no candidates, thereby excluding new parameter space for particles with electric charges between e/6 and e/200.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.114.111302