A Letter of Intent to Install a milli-charged Particle Detector at LHC P5

Ball, A. H.; Brooke, J. J.; Campagnari, C.; Roeck, A. De; Francis, B.; Gastal, M.; Golf, F.; Goldstein, J.; Haas, A.; Hill, C.; Izaguirre, Eder; Kaplan, B.; Magill, Gabriel; Marsh, B.; Miller, D. H.; Prins, T.W.; Shakeshaft, Harry; Stuart, D.; Max, Swiatlowski,; Yavin, Itay

doi:10.48550/arxiv.1607.04669

Cited by 38 publications

(67 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that this experiment is complementary to the existing proposals [15,20,26] since the main interest is in the low mass region. The center of mass energy of the proton-target collisions is 7.5 GeV and this limits the mass reach of the experiment to below m J/ψ /2 while other proposals can cover higher mass regions.…”

Section: Discussionmentioning

confidence: 79%

“…The area behind the V-INGRID on B2 (∼ 30 m underground) is unoccupied and can be a potential detector site. The distance from the axis of the neutrino beam is ∼ 5 m. The detector concept proposed for this experiment is based on a similar proposal made in [20], sharing the idea to use a segmented detector with large scintillator bars. To be sensitive to charges below 10 −3 e, a thick sensitive volume is needed.…”

Section: Introductionmentioning

confidence: 99%

“…The expected sensitivity of FerMINI[15] is drawn in the gray dotted line. There are other proposed experiments[20,25], but only FerMINI with the NuMI beam is included because it is in a similar time scale of SUBMET (within next 5 years).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Search for sub-millicharged particles at J-PARC

Kim,

Hwang,

Yoo

2021

Preprint

View full text Add to dashboard Cite

We studied the feasibility of an experiment searching for sub-millicharged particles (χs) using 30 GeV proton fixed-target collisions at J-PARC. The detector is composed of two layers of stacked scintillator bars and PMTs and is proposed to be installed 280 m from the target. The main background is a random coincidence between two layers due to dark counts in PMTs, which can be reduced to a negligible level using the timing of the proton beam. With N POT = 10 22 which corresponds to running the experiment for three years, the experiment provides sensitivity to χs with the charge down to 5 × 10 −5 in m χ < 0.2 GeV/c 2 and 8 × 10 −4 in m χ < 1.6 GeV/c 2 . This is the regime largely uncovered by the previous experiments. We also explored a few detector designs to achieve an optimal sensitivity to χs. The photoelectron yield is the main driver, but the sensitivity does not have a strong dependence on the detector configuration in the sub-millicharge regime.

show abstract

Section: Discussionmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Search for sub-millicharged particles at J-PARC

Kim,

Hwang,

Yoo

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…They can arise in simple frameworks in which a new gauge boson kinetically mixes with the photon [5]. mCPs in the MeV to several GeV range have been identified as interesting targets for experimental analyses, with limits set by SLAC's milliQ [6], LSND [7,8], Fermilab's miniBoone [7,9] and ArgoNeuT [10,11], and proposed dedicated experiments [12][13][14][15][16]. Importantly, for this paper, mCPs exhibit all of the same phenomena as cosmic rays, only to a lesser degree due to their small charge.…”

Section: Introductionmentioning

confidence: 99%

Millicharged Cosmic Rays and Low Recoil Detectors

Harnik,

Plestid,

Pospelov

et al. 2020

Preprint

View full text Add to dashboard Cite

We consider the production of a "fast flux" of hypothetical millicharged particles (mCPs) in the interstellar medium (ISM). We consider two possible sources induced by cosmic rays: (a) pp →(meson)→(mCP) which adds to atmospheric production of mCPs, and (b) cosmic-ray upscattering on a millicharged component of dark matter. We notice that the galactic magnetic fields retain mCPs for a long time, leading to an enhancement of the fast flux by many orders of magnitude. In both scenarios, we calculate the expected signal for direct dark matter detection aimed at electron recoil. We observe that in Scenario (a) neutrino detectors (ArgoNeuT and Super-Kamiokande) still provide superior sensitivity compared to dark matter detectors (XENON1T). However, in scenarios with a boosted dark matter component, the dark matter detectors perform better, given the enhancement of the upscattered flux at low velocities. Given the uncertainties, both in the flux generation model and in the actual atomic physics leading to electron recoil, it is still possible that the XENON1T-reported excess may come from a fast mCP flux, which will be decisively tested with future experiments.

show abstract

“…These include LEP [2], the SLAC millicharge experiment [3], neutrino experiments [4], the Argoneut experiment [5], MilliQan pathfinder experiment at the LHC [6] and the BEBC beam dump experiment [7]. A plethora of experiments have been proposed to improve these tests and search for still smaller charges [8][9][10][11]. At lower masses, stringent limits arise from absence of anomalous emission in stellar environments [12,13] at masses below an MeV.…”

mentioning

confidence: 99%

Millicharged dark matter detection with ion traps

Budker¹,

Graham²,

Ramani³

et al. 2021

Preprint

View full text Add to dashboard Cite

We propose the use of trapped ions for detection of millicharged dark matter. Millicharged particles will scatter off the ions, giving a signal either in individual events or in the overall heating rate of the ions. Ion traps have several properties which make them ideal detectors for such a signal. First, ion traps have demonstrated significant isolation of the ions from the environment, greatly reducing the background heating and event rates. Second, ion traps can have low thresholds for detection of energy deposition, down to ∼ neV. Third, since the ions are charged, they naturally have large cross sections for scattering with the millicharged particles, further enhanced by the low velocities of the thermalized millicharges. Despite ion-trap setups being optimized for other goals, we find that existing measurements put new constraints on millicharged dark matter which are many orders of magnitude beyond previous bounds. For example, for a millicharge dark matter mass mQ = 10 GeV and charge 10 −3 of the electron charge, ion traps limit the local density to be nQ 1 cm −3 , a factor ∼ 10 8 better than current constraints. Future dedicated ion trap experiments could reach even further into unexplored parameter space.

show abstract

A Letter of Intent to Install a milli-charged Particle Detector at LHC P5

Cited by 38 publications

References 15 publications

Search for sub-millicharged particles at J-PARC

Search for sub-millicharged particles at J-PARC

Millicharged Cosmic Rays and Low Recoil Detectors

Millicharged dark matter detection with ion traps

Contact Info

Product

Resources

About