Soft-Photon Corrections to (B)over-bar → Dτ-(v)over-barτ Relative to (B)over-bar → Dμ-(v)over-barμ

被引：26

作者：

de Boer, Stefan ^{[1
]}

Kitahara, Teppei ^{[1
,2
]}

Nisandzic, Ivan ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Inst Theoret Particle Phys TTP, Engesserstr 7, D-76128 Karlsruhe, Germany

[2] Karlsruhe Inst Technol, Inst Nucl Phys IKP, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 26期

关键词：

QED RADIATIVE-CORRECTIONS; UNIVERSAL MONTE-CARLO; O(ALPHA);

D O I：

10.1103/PhysRevLett.120.261804

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We evaluate long-distance electromagnetic (QED) contributions to (B) over bar (0) -> D+ tau-(v) over bar (tau) and B- -> D-0 tau(-)(v)over bar>(tau) relative to (B) over bar (0) -> D+ mu(-)(v) over bar (mu) and B- -> D-0 mu(-)(v) over bar (mu), respectively, in the standard model. We point out that the QED corrections to the ratios R(D+) and R(D-0) are not negligible, contrary to the expectation that radiative corrections are almost canceled out in the ratio of the two branching fractions. The reason is that long-distance QED corrections depend on the masses and relative velocities of the daughter particles. We find that theoretical predictions for R(D+)(tau/mu) and R(D-0)(tau/mu) can be amplified by similar to 4% and similar to 3%, respectively, for the soft-photon energy cut in the range 20-40 MeV.

引用

页数：6

共 50 条

[1] (B)over-bar → Dτ(ν)over-barτ vs. (B)over-bar → Dμ(ν)over-barμ
Becirevic, Damir
Kosnik, Nejc
Tayduganov, Andrey
PHYSICS LETTERS B, 2012, 716 (01) : 208 - 213
[2] Measurement of the semileptonic decays (B)over-bar → Dτ-(ν)over-barτ and (B)over-bar → D*τ-(ν)over-barτ
Aubert, B.
Bona, M.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prencipe, E.
Prudent, X.
Tisserand, V.
Tico, J. Garra
Grauges, E.
Lopez, L.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Abrams, G. S.
Battaglia, M.
Brown, D. N.
Jacobsen, R. G.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Ronan, M. T.
Tackmann, K.
Tanabe, T.
Hawkes, C. M.
Soni, N.
Watson, A. T.
Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Fulsom, B. G.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Barrett, M.
Khan, A.
Blinov, V. E.
Bukin, A. D.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Bondioli, M.
PHYSICAL REVIEW D, 2009, 79 (09)
[3] A note on the B*(B)over-bar, B*(B)over-bar*, D*(D)over-bar, D*(D)over-bar* molecular states
Sun Zhi-Feng
Luo Zhi-Gang
He Jun
Liu Xiang
Zhu Shi-Lin
CHINESE PHYSICS C, 2012, 36 (03) : 194 - 204
[4] Study of (B)over-bar → Λ(p)over-barρ(φ) and (B)over-bar →Λ(Λ)over-bar(K)over-bar
Geng, C. Q.
Hsiao, Y. K.
PHYSICAL REVIEW D, 2012, 85 (01)
[5] Investigating tetraquarks composed of us(d)over-bar(b)over-bar and ud(s)over-bar(b)over-bar
Huang, Hongxia
Ping, Jialun
EUROPEAN PHYSICAL JOURNAL C, 2019, 79 (07):
[6] D(D)over-bar and B(D)over-bar mixing
Checchia, P
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS, 1996, 109 (6-7): : 999 - 1012
[7] ((∈)over-bar,(∈)over-bar V (q)over-bar(λ,μ))-fuzzy subgroups
Guo, Ziyan
Liao, Zuhua
Guo, Jianfu
Proceedings of the Sixth International Conference on Information and Management Sciences, 2007, 6 : 570 - 574
[8] Flavor models for (B)over-bar → D(*)τ(ν)over-bar
Freytsis, Marat
Ligeti, Zoltan
Ruderman, Joshua T.
PHYSICAL REVIEW D, 2015, 92 (05)
[9] Measurement of (B)over-bar → D(*)τ-(ν)over-barτ at Belle
Hirose, Shigeki
NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS, 2017, 287 : 185 - 188
[10] Measurement of the Semileptonic (B)over-bar → D(*) τ(v)over-barτ Decays at BABAR
Pegna, David Lopes
SUSY09: THE 17TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS, 2009, 1200 : 831 - 834

← 1 2 3 4 5 →