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Miura, Makoto; Arima, Takahiro; Tobimatsu, K.; Ogawa, K.; Shirai, J.; Tsuboyama, T.; Abe, K.; Amako, K.; Arai, Y.; Asano, Y.; Chiba, M.; Chiba, Yasuo; Daigo, M.; Fukawa, M.; Fukushima, Y.; Haba, J.; Hamasaki, Hiroshi; Hemmi, Y.; Higuchi, M.; Hirose, T.; Homma, Y.; Ishihara, N.; Iwata, Y.; Kanzaki, J.; Kikuchi, R.; Kondo, T.; Korhonen, T.; Kurashige, H.; Matsuda, E. K.; Matsui, Takayuki; Miyake, K.; Mori, Shigeki; Nagashima, Y.; Nakagawa, Y.; Nakamura, T.; Nakano, I.; Ohama, T.; Ohsugi, T.; Ohyama, H.; Okabe, K.; Okamoto, Atsushi; Ono, Akira; Pennanen, J.; Sakamoto, H.; Sakuda, M.; Sato, Minoru; Sato, Nobuaki; Shioden, M.; Sumiyoshi, T.; Takada, Yoshihisa; Takasaki, F.; Takita, M.; Tamura, N.; Tatsumi, Daisuke; Uehara, S.; Unno, Y.; Watanabe, Toru; Watase, Y.; Yabuki, F.; Yamada, Y.; Yamagata, T.; Yonezawa, Yasushige; Yoshida, Hajime; Yusa, K.

doi:10.1103/physrevd.57.5345

Cited by 12 publications

(7 citation statements)

References 75 publications

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“…See that we recover the ordinary QED prediction when R goes to zero. There is a model independent precise measurement of this cross section at √ s = 57.77 GeV which obtained for the total muon pair production cross section the value [14] σ exp = 30.05 ± 0.59pb.…”

Section: Muon Pair Productionmentioning

confidence: 99%

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Five-Dimensional Qed, Muon Pair Production and Correction to the Coulomb Potential

Nascimento

Pires

Ribeiro

2004

Int. J. Mod. Phys. A

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We consider QED in five dimensions in a configuration where matter is localized on a 3-brane while foton propagates in the bulk. The idea is to investigate the effects of the Kaluza-Klein modes of the photon in the relativistic regime, but in low energy, and in the nonrelativistic regime. In the relativistic regime, we calculate the cross section for the reaction e + +e − → µ + +µ − . We compare our theoretical result with a precise measurement of this cross section at √ s = 57.77 GeV. As result, we extract a lower bound on the size of the extra dimension. In the nonrelativistic regime, we derive the contribution for the Coulomb potential due to the whole tower of the Kaluza-Klein excited modes of the photon. We use the modified potential to calculate the Rutherford scattering differential cross section.

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Section: Muon Pair Productionmentioning

confidence: 99%

“…We have now all the ingredients that permit us to check how relatively sensitive is the 5D QED for large extra dimension. For this we confront (15) with (14). The result is the lower bound…”

Section: Muon Pair Productionmentioning

confidence: 99%

Five-Dimensional Qed, Muon Pair Production and Correction to the Coulomb Potential

Nascimento

Pires

Ribeiro

2004

Int. J. Mod. Phys. A

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“…Measurements of A FB (e + e − → µ + µ − ) at different energies corrected for QED effects by the respective authors (see[47] and references therein), theoretical Standard Model prediction at lowest order and the expected Belle and Belle II statistical uncertainties (scaled up by a factor of 1000) at √ s = 10.58 GeV. Figure and caption from T. Ferber, in [45].…”

mentioning

confidence: 99%

Massive Feynman integrals and electroweak corrections

Gluza

Riemann²

2015

Nuclear and Particle Physics Proceedings

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C o m p u t a t io n a l T h e o r e t ic a l P a r t ic leP h y s ic s SFB TR9 B KA AC AbstractThere are steady advances in the calculation of electroweak corrections to massive scattering problems at colliders, from the very beginning in the nineteen seventies until contemporary developments. Recent years brought a remarkable progress due to new calculational technologies. This was motivated by demands from phenomenological applications at particle accelerators: higher multiplicities of the final states, extreme kinematics, need of higher precision and thus of higher orders in perturbation theory. We describe selected contributions from the project "Massive particle production" of Sonderforschungsbereich/Transregio 9 of Deutsche Forschungsgemeinschaft.

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“…Background arise from τ → µ decays, initial state radition accompanied production of lower mass Υ(nS), n= (1,2,3), that decay into a muon pair, four lepton final states where two electrons escaped the acceptance and misidentied radiative Bhabha events. For a signal selection efficiency of about 50 %, the combined background fraction is below 1 %.…”

mentioning

confidence: 99%

Towards a Precision Measurement of the Muon Pair Asymmetry in e+e− Annihilation at Belle and Belle II

Ferber

2016

Int. J. Mod. Phys. Conf. Ser.

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The Standard Model predicts interference effects between γ and Z boson exchange in fermion pair production which cause a forward-backward asymmetry A F B even for energies well below the Z-pole. This energy-dependent asymmetry (A F B ≈ 10 −2 at 10.58 GeV) is proportional to the SM ρ parameter and can be measured at the Belle and Belle II experiments. The sensitivity to New Physics as well as theoretical and experimental challenges are described. The process e + e − → µ + µ − is among the simplest reactions of the Standard Model (SM) where both quantum electrodynamics (QED) and electroweak (EW) predictions can be tested. The distribution of the polar angle θ * of the outgoing leptons in the center of mass system, defined as the angle between the e + and the µ + , is expected to be asymmetric in the SM at Born level, caused by the interference of γ and Z exchange even at energies well below the Z pole, whereas lowest-order QED predicts a symmetric angular distribution. The forward-backward asymmetry is defined as A

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Precise measurement of thee+e−→μ+

Cited by 12 publications

References 75 publications

Five-Dimensional Qed, Muon Pair Production and Correction to the Coulomb Potential

Five-Dimensional Qed, Muon Pair Production and Correction to the Coulomb Potential

Massive Feynman integrals and electroweak corrections

Towards a Precision Measurement of the Muon Pair Asymmetry in e+e− Annihilation at Belle and Belle II

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