Rotating Black Holes/Rings at Future Colliders

Ida, Daisuke; Oda, Kin-ya; Park, Seong Chan

doi:10.1142/9789812704030_0145

Cited by 5 publications

(5 citation statements)

References 20 publications

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“…In such panorama, part of the problem then reduces to describing black holes in brane-world models as well as studying their physical properties, specially their evaporation spectra via Hawking radiation [9] which should provide the evidences that physicists have been seeking for. This has motivated the determination of the evaporation rate of extra-dimensional black holes on the brane [10][11][12][13][14][15][16][17][18][19], as well as their greybody factors [20][21][22][23] and physical quantities related to them, as the absorption [24,25] and scattering [26][27][28] cross sections.…”

Section: Introductionmentioning

confidence: 99%

Scalar absorption cross section of rotating black holes with tidal charge

de Oliveira

2020

Preprint

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The absorption cross section of rotating black holes in the Randall-Sundrum brane-world scenario for massless scalar waves is obtained via the partial-wave method. A variety of incidence directions with respect to the black hole rotation axis is considered. Special attention is given to near-extreme black holes, in which cases the absorption cross section increases as the tidal charge becomes more negative. It is shown that black holes with different configurations can present capture cross sections/shadows of same size. However, in such cases, the absorption spectra are different mainly for small frequencies. Numeric results are compared with the capture cross sections in the high-frequency limit, and with the black hole area in the low-frequency limit showing good agreement.

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Section: Introductionmentioning

confidence: 99%

Scalar absorption cross section of rotating black holes with tidal charge

de Oliveira

2020

Preprint

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“…The black hole settles down into a Kerr-Newman solution by eliminating its moments in gravitational radiation. Although Kerr-Newman solutions are unique in four dimensions this is not the case in higher dimensions [26,27]. Indeed, black hole Saturn solutions have been found in five dimensions and are anticipated to exist in other higher dimensions.…”

Section: Gravitational Radiation After Black Hole Formationmentioning

confidence: 97%

Missing energy in black hole production and decay at the Large Hadron Collider

Gingrich

2007

J. High Energy Phys.

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Black holes could be produced at the Large Hadron Collider in TeV-scale gravity scenarios. We discuss missing energy mechanisms in black hole production and decay in large extra-dimensional models. In particular, we examine how graviton emission into the bulk could give the black hole enough recoil to leave the brane. Such a perturbation would cause an abrupt termination in Hawking emission and result in large missing-energy signatures.

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“…The emission energy spectrum is characterised by the Hawking temperature, which depends on n, and is larger for lower mass and for more rapidly rotating black holes. It is not a pure black-body spectrum, being modified by gravitational transmission coefficients ("grey-body factors") [15][16][17][18][19][20]. These encode the probability of transmission through the gravitational field of the black hole, and act primarily to disfavour low-energy emissions.…”

Section: Jhep08(2014)103mentioning

confidence: 99%

Search for microscopic black holes and string balls in final states with leptons and jets with the ATLAS detector at s $$ \sqrt{s} $$ = 8 TeV

Aad¹,

Abbott²,

Abdallah³

et al. 2014

J. High Energ. Phys.

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A search for an excess of events with multiple high transverse momentum objects including charged leptons and jets is presented, using 20.3 fb −1 of proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider in 2012 at a centre-of-mass energy of √ s = 8 TeV. No excess of events beyond Standard Model expectations is observed. Using extra-dimensional models for black hole and string ball production and decay, exclusion contours are determined as a function of the mass threshold for production and the fundamental gravity scale for two, four and six extra dimensions. For six extra dimensions, mass thresholds of 4.8-6.2 TeV are excluded at 95% confidence level, depending on the fundamental gravity scale and model assumptions. Upper limits on the fiducial cross-sections for non-Standard Model production of these final states are set. 6 Event selection 8 7 Background estimation 9 7.1 Prompt background estimation from control regions 9 7.2 Backgrounds from misidentified objects and non-prompt leptons 13 7.3 Background smoothing with fits 148 Systematic uncertainties 159 Results and interpretation 17 Summary 25The ATLAS collaboration 32 IntroductionA long-standing problem in particle physics is the very large difference between two apparently fundamental energy scales: the electroweak scale at O(0.1 TeV) and the gravitational (Planck) scale M Pl = O(10 16 TeV). Models postulating extra spatial dimensions into which the gravitational field propagates attempt to address this hierarchy problem [1][2][3][4]. In most of these models, the Standard Model (SM) fields are constrained to the one time and three spatial dimensions of our universe, whilst the gravitons also propagate into the n "bulk" extra dimensions. In these models, the fundamental gravitational scale in the full (n + 4) space-time dimensions, M D , is dramatically lower than M Pl , and represents an effective scale appropriate for probes of the gravitational interactions at low energies. A value of M D in the TeV range would allow for the production of strong gravitational states such as microscopic black holes at energies accessible at the Large Hadron Collider (LHC) [5][6][7]. Two well-motivated extra-dimensional models are those with large flat extra dimensions -1 - JHEP08(2014)103(ADD models [2,3]) and those with small, usually warped, extra dimensions (RS models [4]). This analysis considers ADD models, for which the n = 1 case is ruled out and the n = 2 case is disfavoured by current astrophysical and tabletop experiments [8]. Thus, benchmark models with two, four and six additional spatial dimensions are considered.Estimates of the black hole production cross-sections invoke semiclassical approximations, the validity of which require the production centre-of-mass energy to be significantly above M D . This motivates the introduction of a production mass threshold M th , well above M D . In the black hole formation stage, some energy is expected to be lost to gravitational or SM radiation. This has recently been calcu...

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Rotating Black Holes/Rings at Future Colliders

Cited by 5 publications

References 20 publications

Scalar absorption cross section of rotating black holes with tidal charge

Scalar absorption cross section of rotating black holes with tidal charge

Missing energy in black hole production and decay at the Large Hadron Collider

Search for microscopic black holes and string balls in final states with leptons and jets with the ATLAS detector at s $$ \sqrt{s} $$ = 8 TeV

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