Can Cosmic Strangelets Reach the Earth?

Banerjee, Shibaji; Ghosh, S. K.; Raha, S.; Syam, D.

doi:10.1103/physrevlett.85.1384

Cited by 49 publications

(39 citation statements)

References 25 publications

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“…The unique properties of DČ light (versus EAS light) may allow the observation of exotic cosmic ray particles, such as "strange quark matter" (see, e.g., [26,27]) or magnetic monopoles [28]. These particles, which are thought to have large effective charges, would provide an extremely strong DČ signature due to the Z 2 dependence of the light yield.…”

Section: Discussionmentioning

confidence: 99%

A high resolution method for measuring cosmic ray composition beyond 10 TeV

Kieda

Swordy

Wakely

2001

Astroparticle Physics

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The accurate determination of the elemental composition of cosmic rays at high energies is expected to provide crucial clues on the origin of these particles. Previous direct measurements of composition have been limited by experiment collecting power, resulting in marginal statistics above 10 14 eV, precisely the region where the "knee" of the cosmic-ray energy spectrum is starting to develop. In contrast, indirect measurements using extensive air showers can produce sufficient statistics in this region but generate elemental measurements which have relatively large uncertainties. Here we discuss a technique which has become possible through the use of modern ground-basedČerenkov imaging detectors. We combine a measurement of theČerenkov light produced by the incoming cosmic-ray nucleus in the upper atmosphere with an estimate of the total nucleus energy produced by the extensive air shower initiated when the particle interacts deeper in the atmosphere. The emission regions prior to and after the first hadronic interaction can be separated by an imagingČerenkov system with sufficient angular and temporal resolution. Monte Carlo simulations indicate an expected charge resolution of ∆Z/Z < 5% for incident iron nuclei in the region of the "knee" of the cosmic-ray energy spectrum. This technique also has the intriguing possibility to unambiguously discover nuclei heavier than iron at energies above 10 14 eV. The identification and rejection of background produced by charged particles in ground based gamma-ray telescopes is also discussed.

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Section: Discussionmentioning

confidence: 99%

A high resolution method for measuring cosmic ray composition beyond 10 TeV

Kieda

Swordy

Wakely

2001

Astroparticle Physics

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“…If the strangelets are stable particles, they should be observed as almost neutral heavy particles in experiments. Indeed, several candidates of exotic particles have been observed in the cosmic rays [5,6,7,8,9,10,11]. There are also experiments to search for such exotic particles in heavy ion collision experiments [11,12,13].…”

Section: Introductionmentioning

confidence: 99%

Chiral Symmetry Breaking and Stability of Quark Droplets

Yasui¹

2006

Int. J. Mod. Phys. E

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We discuss the stability of strangelets -quark droplets with strangeness -in the Nambu-Jona-Lasinio model supplemented by a boundary condition for quark confinement. Effects of dynamical chiral symmetry breaking are considered properly inside quark droplets of arbitrary baryon number. We obtain the energy per baryon number of quark droplets with baryon number from one to thousands. It is shown that strangelets are not the ground states as compared with nuclei, though they can be locally stable.

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“…Such searches [277,278] are motivated by the absence of large-scale chemical and geological changes over eons in the upper layers of lunar surface. Searches in lunar soil thus permit the conversion concentration limits into cosmic flux limits, while the complexity of SMP propagation in the Earth's atmosphere and oceans leads to more unambiguous interpretations [235]. Strangelet flux limits from searches in lunar samples are competitive with searches at balloon or space-borne spectrometers [278,279] (see Section 6.6 and Fig.…”

Section: Choice Of Materialsmentioning

confidence: 99%

Non-collider searches for stable massive particles

et al. 2015

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The theoretical motivation for exotic stable massive particles (SMPs) and the results of SMP searches at non-collider facilities are reviewed. SMPs are defined such that they would be sufficiently long-lived so as to still exist in the cosmos either as Big Bang relics or secondary collision products, and sufficiently massive such that they are typically beyond the reach of any conceivable accelerator-based experiment. The discovery of SMPs would address a number of important questions in modern physics, such as the origin and composition of dark matter and the unification of the fundamental forces. This review outlines the scenarios predicting SMPs and the techniques used at non-collider experiments to look for SMPs in cosmic rays and bound in matter. The limits so far obtained on the fluxes and matter densities of SMPs which possess various detection-relevant properties such as electric and magnetic charge are given.

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Can Cosmic Strangelets Reach the Earth?

Cited by 49 publications

References 25 publications

A high resolution method for measuring cosmic ray composition beyond 10 TeV

A high resolution method for measuring cosmic ray composition beyond 10 TeV

Chiral Symmetry Breaking and Stability of Quark Droplets

Non-collider searches for stable massive particles

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