Decays of b hadrons and a possible new four-quark interaction

M. B. Voloshin

doi:10.1142/S0217751X01003366

Decays of b hadrons and a possible new four-quark interaction

M. B. Voloshin

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

Abstract

A possibility is considered of explaining the low experimental value of the ratio of the lifetimes τ(Λ_b)/τ(B_d) by a new "centiweak" four-quark interaction, i.e. with a strength on the order of 10^-2G_F. It is noted that the considered interaction can also improve agreement with the data on low semileptonic branching ratio B_sl(B) in B meson decays with a simultaneous slight decrease in the prediction for the average charm yield in those decays. The proposed new interaction modifies within the present experimental limits the predictions for differences of lifetimes among B mesons, and can thus be probed by more precise data on these differences. A sample model is briefly discussed, where the new interaction arises through a weak SU(2) singlet scalar field with quantum numbers of a diquark.

Original language	English (US)
Pages (from-to)	2205-2214
Number of pages	10
Journal	International Journal of Modern Physics A
Volume	16
Issue number	12
DOIs	https://doi.org/10.1142/S0217751X01003366
State	Published - May 10 2001

Bibliographical note

Funding Information:
I acknowledge warm hospitality of the Aspen Center for Physics, where preliminary estimates for this paper were done. This work is supported in part by DOE under the grant number DE-FG02-94ER40823.

Access

10.1142/S0217751X01003366

OpenUrl availability

Full text

Cite this

@article{1c2fd2da332b432a97a1943fe516c0e8,

title = "Decays of b hadrons and a possible new four-quark interaction",

abstract = "A possibility is considered of explaining the low experimental value of the ratio of the lifetimes τ(Λb)/τ(Bd) by a new {"}centiweak{"} four-quark interaction, i.e. with a strength on the order of 10-2GF. It is noted that the considered interaction can also improve agreement with the data on low semileptonic branching ratio Bsl(B) in B meson decays with a simultaneous slight decrease in the prediction for the average charm yield in those decays. The proposed new interaction modifies within the present experimental limits the predictions for differences of lifetimes among B mesons, and can thus be probed by more precise data on these differences. A sample model is briefly discussed, where the new interaction arises through a weak SU(2) singlet scalar field with quantum numbers of a diquark.",

author = "Voloshin, {M. B.}",

note = "Funding Information: I acknowledge warm hospitality of the Aspen Center for Physics, where preliminary estimates for this paper were done. This work is supported in part by DOE under the grant number DE-FG02-94ER40823.",

year = "2001",

month = may,

day = "10",

doi = "10.1142/S0217751X01003366",

language = "English (US)",

volume = "16",

pages = "2205--2214",

journal = "International Journal of Modern Physics A",

issn = "0217-751X",

publisher = "World Scientific Publishing Co. Pte Ltd",

number = "12",

}

TY - JOUR

T1 - Decays of b hadrons and a possible new four-quark interaction

AU - Voloshin, M. B.

N1 - Funding Information: I acknowledge warm hospitality of the Aspen Center for Physics, where preliminary estimates for this paper were done. This work is supported in part by DOE under the grant number DE-FG02-94ER40823.

PY - 2001/5/10

Y1 - 2001/5/10

N2 - A possibility is considered of explaining the low experimental value of the ratio of the lifetimes τ(Λb)/τ(Bd) by a new "centiweak" four-quark interaction, i.e. with a strength on the order of 10-2GF. It is noted that the considered interaction can also improve agreement with the data on low semileptonic branching ratio Bsl(B) in B meson decays with a simultaneous slight decrease in the prediction for the average charm yield in those decays. The proposed new interaction modifies within the present experimental limits the predictions for differences of lifetimes among B mesons, and can thus be probed by more precise data on these differences. A sample model is briefly discussed, where the new interaction arises through a weak SU(2) singlet scalar field with quantum numbers of a diquark.

AB - A possibility is considered of explaining the low experimental value of the ratio of the lifetimes τ(Λb)/τ(Bd) by a new "centiweak" four-quark interaction, i.e. with a strength on the order of 10-2GF. It is noted that the considered interaction can also improve agreement with the data on low semileptonic branching ratio Bsl(B) in B meson decays with a simultaneous slight decrease in the prediction for the average charm yield in those decays. The proposed new interaction modifies within the present experimental limits the predictions for differences of lifetimes among B mesons, and can thus be probed by more precise data on these differences. A sample model is briefly discussed, where the new interaction arises through a weak SU(2) singlet scalar field with quantum numbers of a diquark.

UR - http://www.scopus.com/inward/record.url?scp=0035837812&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035837812&partnerID=8YFLogxK

U2 - 10.1142/S0217751X01003366

DO - 10.1142/S0217751X01003366

M3 - Article

AN - SCOPUS:0035837812

SN - 0217-751X

VL - 16

SP - 2205

EP - 2214

JO - International Journal of Modern Physics A

JF - International Journal of Modern Physics A

IS - 12

ER -

Decays of b hadrons and a possible new four-quark interaction

Abstract

Bibliographical note

Access

OpenUrl availability

Other files and links

Fingerprint

Cite this