Large angle beamstrahlung as a beam–beam monitoring tool

Bonvicini, G.; Welch, J.

doi:10.1016/s0168-9002(98)00659-7

Cited by 8 publications

(5 citation statements)

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“…Event generation is performed for each scenario independently and both beams are assumed to be unpolarised. The beamstrahlung effects [22] are taken into account and the detector response is simulated based on the SiD detector at the International Linear Collider (ILC) [23]. Simulated signal and relevant background events are analyzed to reconstruct Higgs bosons by first performing jet clustering and b-tagging and then applying proper selection cuts to enrich the signal events.…”

Section: Introductionmentioning

confidence: 99%

Search for neutral Higgs bosons within type-I 2HDM at future linear colliders

Hashemi

Haghighat

2019

Eur. Phys. J. C

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In this study, we investigate observability of the neutral scalar (H) and pseudoscalar (A) Higgs bosons in the framework of the Type-I 2HDM at SM-like scenario at a linear collider operating at √ s = 500 and 1000 GeV. The signal process chain e − e + → AH → ZHH → jjbbbb where jj is a di-jet resulting from the Z boson decay and bb is a b quark pair, is assumed and several benchmark scenarios with different mass hypotheses are studied. The assumed signal process is mainly motivated by the possible enhancements the decay modes A → ZH and H → bb may receive in the Type-I . Event generation is performed for the assumed scenarios separately and the beamstrahlung effects are taken into account. The detector response is simulated based on the SiD detector at the ILC and the simulated events are analyzed to obtain candidate mass distributions of the Higgs bosons. According to the results, the top quark pair production process has the most contribution to the total background and is, however, well-controlled. Results indicate that, in all of the considered scenarios, both of the Higgs bosons H and A are observable with signals exceeding 5σ with possibility of mass measurement. To be specific, at √ s = 500 GeV, the region of parameter space with mH = 150 GeV and 200 ≤ mA ≤ 250 GeV is observable at the integrated luminosity of 500 f b −1 . Also, at √ s = 1000 GeV, the region with 150 ≤ mH ≤ 250 GeV and 200 ≤ mA ≤ 330 GeV with a mass splitting of 50-100 GeV between the H and A Higgs bosons is observable at the same integrated luminosity.

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Section: Introductionmentioning

confidence: 99%

Search for neutral Higgs bosons within type-I 2HDM at future linear colliders

Hashemi

Haghighat

2019

Eur. Phys. J. C

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“…The transition angle between the two regimes is at around 20/γ [1]. In Table 1, we see that the angles at which the last dipoles are observed are in the "short magnet" region, at 33 and 44 times 1/γ respectively.…”

Section: Oho Upmentioning

confidence: 82%

“…Ref. [1] discusses the properties of large angle synchrotron radiation. It considers the classical formulae from Ref.…”

Section: Oho Upmentioning

confidence: 99%

“…Following Ref. [1], the magnet length L is introduced, the total radiated energy U = P L/c, and the differentials are such that dψ = 4πdθ. Making the large-angle substitutions…”

Section: Oho Upmentioning

confidence: 99%

“…Built by a collaboration of five institutions headed by WSU, the LABM consists of four narrow angle telescopes which collect light from the IP, divide it into two polarizations and four wavelengths, and count photons by means of 32 total photomultipliers (PMT). The main background separation between beamstrahlung signal and synchrotron radiation backgrounds exploits the very forward angular pattern of radiation from a magnet, whereas the radiation from the very short beam-beam region is much broader in angle [1].…”

Section: Introductionmentioning

confidence: 99%

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