Search for lightly ionizing particles with the MACRO detector

Ambrosio, M.; Antolini, R.; Auriemma, G.; Bakari, D.; Baldini, A.; Barbarino, G. C.; Barish, B.; Battistoni, G.; Bellotti, R.; Bemporad, C.; Bernardini, P.; Bilokon, H.; Bisi, V.; Bloise, C.; Bower, C.; Brigida, M.; Bussino, S.; Cafagna, F.; Calicchio, M.; Campana, D.; Carboni, M.; Cecchini, S.; Cei, F.; Chiarella, V.; Choudhary, B. C.; Coutu, S.; Cataldo, G. de; Dekhissi, H.; Marzo, C. De; Mitri, I. De; Derkaoui, J. E.; Vincenzi, M. De; Credico, A. Di; Erriquez, O.; Favuzzi, C.; Forti, C.; Fusco, P.; Giacomelli, G.; Giannini, T.; Giglietto, N.; Giorgini, M.; Grassi, M.; Gray, L.; Grillo, A.; Guarino, F.; Gustavino, C.; Habig, A.; Hanson, K.; Heinz, R.; Iarocci, E.; Katsavounidis, E.; Katsavounidis, I.; Kearns, E.; Kim, H.; Kyriazopoulou, S.; Lamanna, E.; Lane, C.; Levin, D.; Lipari, P.; Longley, N. P.; Longo, Michael J.; Loparco, F.; Maaroufi, F.; Mancarella, G.; Mandrioli, G.; Margiotta, A.; Marini, A.; Martello, D.; Marzari‐Chiesa, A.; Mazziotta, M. N.; Michael, D. G.; Mikheyev, S.; Miller, Laura Stephanie; Monacelli, P.; Montaruli, T.; Monteno, M.; Mufson, S.; Musser, J.; Nicoló, D.; Nolty, R.; Orth, C. J.; Okada, C.; Osteria, G.; Ouchrif, M.; Palamara, O.; Patera, V.; Patrizii, L.; Pazzi, R.; Peck, C. W.; Perrone, L.; Petrera, S.; Pistilli, P.; Popa, V.; Rainò, A.; Reynoldson, J.; Ronga, F. J.; Satriano, C.; Satta, L.; Scapparone, E.; Scholberg, K.; Sciubba, A.; Serra, P.; Sioli, M.; Sitta, M.; Spinelli, P.; Spinetti, M.; Spurio, M.; Steinberg, R.; Stone, J. L.; Sulak, L.; Surdo, A.; Tarlé, G.; Togo, V.; Vakili, M.; Vilela, E.; Walter, C. W.; Webb, R.

doi:10.1103/physrevd.62.052003

Cited by 24 publications

(23 citation statements)

References 25 publications

(13 reference statements)

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“…In fact, there are projects to detect tracks in old rocks [35] and plans for experiments to look for superheavy DM with multiple scatterings [36]. There are also limits on the allowed fluxes for fractionally charged superheavy DM [33], but these concern only ultra-relativistic particles (β > 0.25).…”

Section: Prospects For Detectionmentioning

confidence: 99%

Planck mass charged gravitino dark matter

Meissner

Nicolai

2019

Phys. Rev. D

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Section: Prospects For Detectionmentioning

confidence: 99%

Planck mass charged gravitino dark matter

Meissner

Nicolai

2019

Phys. Rev. D

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“…However, our proposal is different from the cases of the charged, next-to-lightest supersymmetric particles which can decay (Dimopoulos et al, 1997;Giudice and Rattazzi, 1999). If the stable scalar χ is produced at some collider or coming from cosmic rays, halo particles, or bulk matter (Perl, 2008;Perl et al, 2009;Ambrosio et al, 2000;Kim et al, 2007;Lee et al, 2002), it can easily escape from the detectors. Indeed, the general collider detectors cannot be used to find particles with an electric charge smaller than 1/3 due to the uncertainty in trace reconstruction (Perl, 2008;Perl et al, 2009).…”

Section: Stable Anomalously-charged Scalarsmentioning

confidence: 99%

“…Indeed, the general collider detectors cannot be used to find particles with an electric charge smaller than 1/3 due to the uncertainty in trace reconstruction (Perl, 2008;Perl et al, 2009). The searches for its impinging on the earth due to the cosmic rays or halo particles have been sensitive only to the smallest charges of 1/5 (Perl et al, 2001;Ambrosio et al, 2000). The bulk matter and sea water searches (only with integer charges) (Smith and Bennett, 1979; and so forth, up to Chuzhoy and Kolb, 2009) have a similar sensitivity (Kim et al, 2007;Lee et al, 2002;Perl et al, 2000;.…”

Section: Stable Anomalously-charged Scalarsmentioning

confidence: 99%

A Simple Model of Gauged Lepton and Baryon Charges

Dong¹,

Long²

2015

Physics International

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We propose a simple extension of the standard model with lepton and baryon numbers gauged by introducing only two leptoquarks (j) to the fermion content. As natural consequences of the anomaly cancelation, the right-handed neutrinos present and the number of observed fermion families equals to the number of fundamental colors, which is three. To avoid stabilized colored-leptoquarks, two scalar doublets φ, χ are introduced which couple the leptoquarks to ordinary quarks. The new gauge bosonsZ gain masses via the vacuum values of scalars S L , S B which are only charged under the U(1) L , U(1) B symmetries, respectively. Furthermore, due to the spontaneous symmetry breaking of these charges, the neutrinos obtain small masses via type I seesaw mechanism while the baryogenesis can be generated in several cases. Constraints coming from flavor changing, stabilization of anomalously electriccharged scalars and collision phenomenology are also obtained.

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“…Examples of recent searches in colliders are the 2003 search using proton-antiproton collisions at 1800 GeV [31] and the 1998 search using electron-positron collisions at 130 GeV to 183 GeV [32]. An example of a search in particles impinging on the Earth is the 2000 search by Ambrosio et al [33].…”

Section: Scientific Status Of Fractional Charge Searchesmentioning

confidence: 99%

Automated electric charge measurements of fluid microdrops using the Millikan method

Lee¹,

Halyo²,

Lee³

et al. 2004

Metrologia

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Automated measurements of the electric charge of fluid microdrops precise to up to 0.016 of an electron charge have been made using machine-vision systems to observe the motion of fluid microdrops in air under the influence of an oscillating electric field. The fluid drop diameters have ranged from 7 to 25 µm with smaller diameter drops being measured to higher precision. The experimental runs performed for the purpose of attempting to find isolated fractionally electrically charged particles have measured the charges of tens of millions of fluid microdrops using piezoelectrically driven drop-on-demand inkjet-like droplet ejectors as fluid drop sources.

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Search for lightly ionizing particles with the MACRO detector

Cited by 24 publications

References 25 publications

Planck mass charged gravitino dark matter

Planck mass charged gravitino dark matter

A Simple Model of Gauged Lepton and Baryon Charges

Automated electric charge measurements of fluid microdrops using the Millikan method

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