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Title: Spin and chirality effects in antler-topology processes at high energy $$$$\varvec{e^+e^-}$$$$ colliders

Journal Article · · European Physical Journal. C, Particles and Fields
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We perform a model-independent investigation of spin and chirality correlation effects in the antler-topology processes e+e-→P+P-→(ℓ+D0)(ℓ-D¯0) at high-energy e+e- colliders with polarized beams. Generally the production process e+e-→P+P- can occur not only through the s-channel exchange of vector bosons, V0 , including the neutral Standard Model (SM) gauge bosons, γ and Z, but also through the s- and t-channel exchanges of new neutral states, S0 and T0 , and the u-channel exchange of new doubly charged states, U-- . The general set of (non-chiral) three-point couplings of the new particles and leptons allowed in a renormalizable quantum field theory is considered. The general spin and chirality analysis is based on the threshold behavior of the excitation curves for P+P- pair production in e+e- collisions with longitudinal- and transverse-polarized beams, the angular distributions in the production process and also the production-decay angular correlations. In the first step, we present the observables in the helicity formalism. Subsequently, we show how a set of observables can be designed for determining the spins and chiral structures of the new particles without any model assumptions. Finally, taking into account a typical set of approximately chiral invariant scenarios, we demonstrate how the spin and chirality effects can be probed experimentally at a high-energy e+e- collider.

Research Organization:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-95ER40896; fg02-95er40896
OSTI ID:
1503040
Alternate ID(s):
OSTI ID: 1438012
Journal Information:
European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Vol. 75 Journal Issue: 10; ISSN 1434-6044
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

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Figures / Tables (20)

Fig. 1(p. 2)figure Fig. 1
Fig. 2(p. 3)figure Fig. 2
Table 1(p. 4)table Table 1
Table 2(p. 5)table Table 2
Fig. 3(p. 11)figure Fig. 3
Fig. 4(p. 12)figure Fig. 4
Table 3(p. 16)table Table 3
Table 4(p. 17)table Table 4
Fig. 5(p. 18)figure Fig. 5
Fig. 6(p. 19)figure Fig. 6
Fig. 7(p. 21)figure Fig. 7
Fig. 8(p. 23)figure Fig. 8
Fig. 9(p. 24)figure Fig. 9
Fig. 10(p. 26)figure Fig. 10
Fig. 11(p. 26)figure Fig. 11
Table 5(p. 27)table Table 5
Fig. 12(p. 28)figure Fig. 12
Fig. 13(p. 29)figure Fig. 13
Fig. 14(p. 30)figure Fig. 14
Table 6(p. 32)table Table 6

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS