{"id":"c8044f7f-9900-4c82-89e5-d6d95e082e9c","arxiv_id":"hep-ph/0502060","paper_version":2,"verdict":"ACCEPT","confidence":"HIGH","novelty_score":6.0,"correctness_risk":"low","formal_verification":"none","parameter_count":5,"one_line_summary":"Two transverse-polarization asymmetries in B0 -> K*0 l+ l- are shown to be form-factor independent at leading order, with SM values A_T^(1) = 0.9986 and A_T^(2) = -0.043, and to respond strongly to a right-handed C_7'.","lead":"The paper identifies two asymmetries in the angular distribution of B0 -> K*0 l+ l- decays whose Standard Model predictions are nearly free of hadronic form-factor uncertainty, and shows they respond strongly to right-handed new physics in the electromagnetic dipole operator. It supplies the first quantitative SM values and error estimates for these observables in the low dilepton mass region.","discovery_kind":"new_method","skeptic_critique":{"model":"selfhosted/deepseek-v4.1-flash","headline":"A_T^(2) = -0.043 ± 0.003 is linear in the same symmetry breaking that the deferred 1/m_b corrections modify; the quoted error bar covers only NLL parameter variation, so the precision claim on A_T^(2) is not established at the ±0.003 level.","rationale":"The reader's weakest_assumption targets xi_perp(0) = 0.35 ± 0.07. That is a real limitation, but the paper itself demonstrates (Fig. 1 and §4.2) that the transverse asymmetries are only weakly sensitive to it, so it is not the load-bearing gap for the headline numbers. The more consequential gap is the one the authors flag but do not quantify: the 1/m_b power corrections deferred in §1 and §5. Because A_T^(2) is linear in the symmetry-breaking parameter δ while A_T^(1) is quadratic, the deferred corrections enter A_T^(2) at first order and A_T^(1) only at second. The quoted ±0.003 on A_T^(2) is a parameter-variation error within the NLL framework, not an estimate of the neglected power corrections, and the central value -0.043 is itself entirely generated by subleading terms. So the honest reading is: the form-factor-independence argument (Eqs. 3.8-3.9, 4.2) is correct and A_T^(1) is robust; the precision claim on A_T^(2) is conditional on corrections the authors explicitly postpone. This is a qualification of one number, not a defect in the paper's central construction, and the authors' own deferral statement covers it in spirit. I therefore do not move the verdict: ACCEPT stands, with the caveat that abstract:s4 and abstract:s7 should be read as NLL-within-large-recoil statements rather than as fully quantified SM benchmarks. The reader's rationale already notes that abstract:s7 is stronger than the body supports, which is consistent with this reading. No circularity, no post-hoc selection, no missing error bars on the structural claim itself; the concern is bounded and testable by the check above.","tokens_in":17229,"tokens_out":4037,"duration_ms":89899,"concrete_test":"Recompute the integrated A_T^(2) over 2m_mu <= M_mu+mu- <= 2.5 GeV twice: once with the large-recoil relations of Eqs. (2.8) as in Table 1, and once with the full B -> K* form factors of Ref. [8] (Ali-Ball-Handoko-Hiller LCSR) inserted directly into Eqs. (3.2)-(3.4) with no relation imposed. The difference between the two numbers is a direct measure of the power-correction uncertainty. If it exceeds the quoted ±0.003 — in particular if it is of order 0.01 or larger — the error bar in Table 1 and abstract:s4 understates the theoretical uncertainty on A_T^(2), and the SM benchmark used to claim new-physics sensitivity in Figs. 4 and 6 should be widened accordingly.","verdict_should_be":"UNCHANGED","load_bearing_attack":"The structural result is sound. Writing A_perp = -A_par(1+δ), Eq. (4.2) gives A_T^(1) ≈ 1 - δ²/2 and A_T^(2) ≈ -δ. A_T^(1) is therefore quadratically protected, and its 0.9986 is genuinely robust against form-factor and power corrections. A_T^(2) is linear in δ, and the quoted -0.043 corresponds to δ ≈ 4%: the entire signal is a subleading effect. That 4% arises from the O(m_K*²/m_B²) terms dropped between Eqs. (3.8)-(3.10) and from the NLL corrections of §4.2. The authors state in §1 and again in §5 that subleading 1/m_b corrections 'will be included elsewhere' — an acknowledged deferral — yet Table 1 and abstract:s4 quote ±0.003 as the theoretical error, and §4.2 says only that errors from input parameters were 'included in quadrature'. No estimate of the neglected power corrections enters that number. Because those corrections shift precisely the quantity that generates the 4%, the central value can plausibly move by an amount comparable to itself while the quoted error stays at 7%. The same gap propagates to the new-physics discrimination in Figs. 4 and 6: scenarios separated by shifts of order 0.01-0.02 in A_T^(2) are not resolvable if the SM baseline is uncertain at that level. This does not touch A_T^(1), F_L, or the form-factor-independence argument; it qualifies the precision claim on A_T^(2) and the strength of abstract:s7 ('large effects of new physics').","agreement_with_reader":"partial"},"referee_report":{"model":"selfhosted/deepseek-v4.1-flash","summary":"The manuscript studies the four-body decay B0 -> K*0(-> K- pi+) l+ l- in the low-dilepton-mass region (2 m_mu <= M_{mu+mu-} <= 2.5 GeV), where the K* carries large energy and the seven B->K* form factors collapse to two universal soft objects xi_perp and xi_parallel. Working in the transversity basis, the authors define observables built from ratios of the K* spin amplitudes A_perp, A_parallel, A_0: the transverse asymmetries A_T^(1) and A_T^(2) of Eq. (4.2), the polarization parameter alpha_K* of Eq. (4.3), and the longitudinal/transverse fractions F_L, F_T of Eq. (4.4). The central structural observation is that at leading order in 1/m_b and alpha_s the heavy-quark/large-energy relations of Eqs. (2.8) force A_perp = -A_parallel (Eqs. 3.8-3.9), so that the form-factor dependence cancels in A_T^(1) and A_T^(2). Including NLL factorizable and non-factorizable corrections following Beneke-Feldmann-Seidel (Ref. [12]), with explicit expressions in Eqs. (4.7)-(4.8), the authors quote integrated SM values A_T^(1) = 0.9986 +/- 0.0002, A_T^(2) = -0.043 +/- 0.003, alpha_K* = 3.47 +/- 0.71, F_L = 0.69 +/- 0.03, F_T = 0.31 +/- 0.03 (Table 1). Beyond the SM, they scan right-handed dipole contributions C_7^{eff'} subject to the leading-order b->s gamma bound of Eq. (4.10), and separately allow C_9,10 to deviate, finding large effects in A_T^(1,2) (Figs. 3-6) and in alpha_K* (Fig. 7).","tokens_in":17627,"tokens_out":4617,"duration_ms":93506,"significance":"The paper delivers a genuinely useful structural result: because A_perp = -A_parallel at leading power, A_T^(1) is quadratically protected (1 - delta^2/2) and A_T^(2) is linear in the symmetry-breaking parameter delta, so the two asymmetries form a matched pair of null and precision tests with complementary sensitivity. The cancellation of hadronic form factors in these ratios is algebraic and verifiable directly from Eqs. (3.8)-(3.9) and (4.2), and the NLL treatment is transparently tied to a published calculation rather than asserted. The predictions are falsifiable and quantitative, and the model-independent scan with an explicit b->s gamma constraint gives experimentalists a concrete target. The paper is also candid about where its control is weak: it states in Sec. 4.2 that alpha_K* is strongly sensitive to the poorly known xi_perp(0) and that better theoretical control on the soft form factor is required, which is the right way to present a result whose robustness is uneven across observables.","major_comments":[{"comment":"The quoted error on A_T^(2) of +/-0.003 (about 7% of the central value) is obtained by varying the theoretical input parameters, as the abstract states, but it does not appear to include any estimate of the neglected 1/m_b and 1/E power corrections, which the authors explicitly defer to future work in Sec. 1 and again in Sec. 5. This matters more for A_T^(2) than for A_T^(1): since A_T^(2) vanishes at leading power, its entire SM value of -0.043 is itself a subleading effect generated by the O(m_K*^2/m_B^2) terms dropped between Eqs. (3.8)-(3.10) and by the NLL corrections of Sec. 4.2. The same subleading corrections that produce the central value can plausibly shift it, so the reader cannot tell from Table 1 whether +/-0.003 is a total theoretical error or only the parameter-variation piece. Please state explicitly in the Table 1 caption and in Sec. 4.2 that the quoted error excludes power corrections, and if feasible give a rough numerical estimate of the size of the dropped m_K*^2/m_B^2 terms so that the precision claim on A_T^(2) can be judged. The structural result for A_T^(1) and the form-factor-independence argument are unaffected by this point.","section":"Sec. 4.2, Table 1, and abstract sentences s3-s4","authors_acknowledge":null,"authors_acknowledge_p":null}],"minor_comments":[{"comment":"The new-physics analysis uses the leading-order form-factor relations of Eqs. (2.8) and the leading-order amplitudes of Eqs. (3.2)-(3.4), whereas the SM baseline in Table 1 and Fig. 1 is the NLL result. The SM curve drawn in Figs. 3-8 is therefore the LO one, not the NLL prediction of Table 1. Please say so explicitly in the figure captions or in the text, and confirm that the qualitative conclusions of Figs. 3-8 are unchanged when the NLL baseline is used; Fig. 1 suggests the shift is small, but the reader should not have to infer it.","section":"Sec. 4.3, Figs. 3-8","authors_acknowledge":null,"authors_acknowledge_p":null},{"comment":"The variation R_{9,10} = C_{9,10}/C_{9,10}^SM is described only as being 'in a range that is consistent with present data on rare B decays', with no numerical endpoints given. Please state the actual range used, since the width of the shaded bands in Figs. 5 and 6 is the visual measure of how robust the C_7^{eff'} sensitivity is against C_9,10 contributions.","section":"Sec. 4.3, Figs. 5-6","authors_acknowledge":null,"authors_acknowledge_p":null},{"comment":"The b->s gamma constraint |C_7^{eff}|^2 + |C_7^{eff'}|^2 <= 1.2 |C_7^{eff,SM}|^2 is imposed at leading order, as the text notes. Since the NLL corrections to B(B->X_s gamma) are not negligible at the quoted precision, please add a sentence on how much the allowed region in the (C_7^{eff}, C_7^{eff'}) plane would move under the NLL prediction, or state that the leading-order treatment is sufficient for the illustrative scenarios shown.","section":"Eq. (4.10)","authors_acknowledge":null,"authors_acknowledge_p":null},{"comment":"The text says terms of O(m_K*^2/m_B^2) have been dropped. Since these are precisely the terms that generate the non-zero A_T^(2) and the deviation of A_T^(1) from unity, it would help to quote their numerical size at, say, M_{mu+mu-} = 2 GeV, so the reader can see how the leading-power formulas connect to the NLL numbers of Table 1.","section":"Sec. 3.1, Eqs. (3.8)-(3.10)","authors_acknowledge":null,"authors_acknowledge_p":null},{"comment":"The abstract states l = e, mu, tau, but the numerical analysis of Sec. 4.2 and Table 1 is restricted to muons in the window 2 m_mu <= M_{mu+mu-} <= 2.5 GeV. Please make the restriction explicit in the abstract so that the quoted numbers are not read as applying to all three lepton flavours.","section":"Abstract","authors_acknowledge":null,"authors_acknowledge_p":null},{"comment":"The entry 'M. Beneke, A. P. Chapovsky, M. Diehl, and T. Feldmann, Nucl. Phys. B643, 2002 (431)' has the year and page transposed; it should read Nucl. Phys. B643, 431 (2002).","section":"Reference [13]","authors_acknowledge":null,"authors_acknowledge_p":null},{"comment":"The caption attributes the small cusp to a variation of m_c and calls it an artifact of the c-bar c threshold. Please state which curve the cusp appears on and at what value of M_{mu+mu-}, so that a reader comparing with Fig. 2 is not left guessing.","section":"Fig. 1 caption","authors_acknowledge":null,"authors_acknowledge_p":null}],"recommendation":"minor_revision","confidential_remarks":"The structural result is sound and the paper is candid about the xi_perp(0) sensitivity of alpha_K*, which is the right posture. My only substantive reservation is that the +/-0.003 error on A_T^(2) is presented without an accompanying statement that power corrections are excluded; the authors already flag the deferral in the text, so this is a clarification rather than a defect. The remaining items are presentational."},"author_rebuttal":null,"desk_editor":{"model":"selfhosted/deepseek-v4.1-flash","letter":"The thing worth knowing: this paper turns the heavy-quark/large-energy relations into two observables that carry no hadronic form-factor dependence at leading power. Because the relations force A_perp = -A_par (Eqs. 3.8-3.9), the ratios in Eq. 4.2 collapse to A_T^(1) ~ 1 and A_T^(2) ~ 0 with no xi dependence. That is a short algebraic step, but it is the right one and it is stated cleanly. The NLL treatment follows Beneke-Feldmann-Seidel with the formulas written out (Eqs. 4.7-4.8) and inputs taken from that paper's table, so the calculation is checkable. The SM numbers in Table 1 are plausible given the near-cancellation. Credit where due: the authors flag two limitations themselves. Subleading 1/m_b corrections are deferred (S1 and S5, 'will be included elsewhere'), and Fig. 2 shows alpha_K* is strongly sensitive to xi_perp(0). Neither is hidden. Where I would push is the ±0.003 on A_T^(2). Write A_perp = -A_par(1+delta); then A_T^(2) ~ delta and A_T^(1) ~ 1 - delta^2/2. So A_T^(1) is quadratically protected and its 0.9986 is genuinely robust. A_T^(2) is linear in delta, and the quoted -0.043 is delta ~ 4%: the whole signal is a subleading effect, generated by the O(m_K*^2/m_B^2) terms dropped between Eqs. 3.8-3.10 and by the NLL corrections. The quoted error covers input-parameter variation and NLL, but not the deferred power corrections, which shift exactly the quantity that produces the 4%. The central value could plausibly move by an amount comparable to itself while the error stays at 7%. That does not touch A_T^(1), F_L, or the form-factor-independence argument, and the new-physics shifts in Figs. 4 and 6 are large enough that the qualitative conclusion survives. But the precision claim on A_T^(2), and the abstract's 'large effects' phrasing, are stronger than the body supports. Who it is for: anyone working on b -> s l l angular observables or right-handed currents in the dipole operator. The observables became standard for a reason. Recommendation: send it out. The structural result is sound and the calculation is reproducible; a referee should ask for a power-correction estimate on A_T^(2), not a rewrite.","headline":"Clean, form-factor-free transverse asymmetries; the one number I'd push back on is the ±0.003 on A_T^(2).","tokens_in":18325,"tokens_out":2526,"would_cite":true,"duration_ms":48537,"reading_group":"maybe","serious_thinker":"yes","would_accept_peer_review":true},"pith_extraction":{"msc":[],"pacs":["13.20.He","13.25.Hw"],"model":"selfhosted/deepseek-v4.1-flash","headline":"The paper argues that two transverse asymmetries in $B^0$ decays to $K^{*0}(K^+K^-)$ plus a lepton pair are free of hadronic form-factor uncertainty, and therefore give a clean handle on right-handed new physics.","keywords":["rare B decays","transversity amplitudes","K* polarization","form factor relations","heavy quark limit","right-handed currents","electromagnetic dipole operators","angular distribution"],"falsifier":"A measurement of $A_T^(1)$ and $A_T^(2)$ in the window $2m_mu <= M_{mu^+mu^-} <= 2.5$ GeV that lands significantly away from $0.9986$ and $-0.043$ while $b$ to $s$ photon data remain Standard-Model-like would either reveal right-handed dipole contributions or expose the heavy-quark expansion as inadequate at this recoil; conversely, agreement to within the quoted errors would confirm the cancellation.","tokens_in":18501,"feed_emoji":"⚛️","tokens_out":3214,"duration_ms":48713,"temperature":0.7,"pith_summary":"The paper asks whether the angular distribution of $B^0$ decays to $K^{*0}(K^-K^+)$ plus a lepton pair can produce observables clean enough to test the Standard Model precisely and to expose right-handed currents. Its strategy is to work at low dilepton mass, where the $K^*$ carries large energy and the seven $B$ to $K^*$ form factors collapse onto two universal soft functions, $xi_$ and $xi_parallel$. Because that same collapse forces $A_perp = -A_parallel$ in the Standard Model, the two transverse asymmetries built from those amplitudes lose their dependence on hadronic input at leading order, and the paper checks that the residual next-to-leading corrections stay small. If that holds, a measured deviation from $A_T^(1)$ close to one, or from $A_T^(2)$ close to zero, would point at new physics in the electromagnetic dipole operators rather than at poorly known hadronic matrix elements. The authors then show what a right-handed dipole coefficient $C_7^{eff prime}$ would do to these asymmetries and to the longitudinal and transverse polarization fractions.","feed_headline":"B decays predict 0.9986 for a form-factor-free asymmetry","feed_subtitle":"Two transverse asymmetries in B to K* lepton pairs shed their hadronic uncertainty, leaving a clean probe of right-handed currents.","key_machinery":"The carrying device is the transversity basis: the $K^*$ spin amplitudes $A_perp$, $A_parallel$, $A_0$ (plus a time-like $A_t$ that vanishes for massless leptons) appear in the four-body angular distribution, and their ratios can be extracted from the angles of the $K^-pi^+$ and lepton pairs. Combined with the heavy-quark and large-recoil form factor relations, which express all seven $B$ to $K^*$ form factors through $xi_perp$ and $xi_parallel$ up to corrections of order $1/m_b$ and $alpha_s$, these ratios become predictions with almost no hadronic input. The paper then upgrades the relations to next-to-leading logarithmic accuracy using factorizable and non-factorizable corrections, including the hard-scattering kernels and light-cone wave functions, to test how much of that cleanliness survives.","core_discovery":"The central claim is that the transverse asymmetries $A_T^(1) = -2 Re(A_parallel A_perp^*)/(|A_perp|^2 + |A_parallel|^2)$ and $A_T^(2) = (|A_perp|^2 - |A_parallel|^2)/(|A_perp|^2 + |A_parallel|^2)$ are, at leading order in $1/m_b$ and $alpha_s$, completely independent of the hadronic form factors. The mechanism is the heavy-quark and large-energy relation $A_perp = -A_parallel$, which follows from the reduction of the seven $B$ to $K^*$ form factors to the two soft functions $xi_perp$ and $xi_parallel$; the ratios defining the asymmetries then cancel the form factors entirely. Including factorizable and non-factorizable corrections at next-to-leading logarithmic order, the authors find the Standard Model prediction integrated over $2m_mu <= M_{mu^+mu^-} <= 2.5$ GeV to be $A_T^(1) = 0.9986 plus or minus 0.0002$ and $A_T^(2) = -0.043 plus or minus 0.003$, with theoretical errors below seven percent. For the polarization fractions they obtain $F_L = 0.69 plus or minus 0.03$ and $F_T = 0.31 plus or minus 0.03$, hence $Gamma_L/Gamma_T = 2.23 plus or minus 0.31$, and $alpha_{K^*} = 3.47 plus or minus 0.71$. Allowing new physics in the dipole coefficient $C_7^{eff prime}$ subject to the inclusive $b$ to $s$ photon bound, they find large, sign-sensitive shifts in the transverse asymmetries, so that a measurement away from the Standard Model values would be a hint of right-handed quark currents.","pith_inferences":["The same cancellation logic should transfer to the $B_s$ to $phi$ lepton-pair channel, where an analogous large-energy limit applies, giving a second, statistically independent handle on right-handed dipole contributions.","A future lattice or soft-collinear determination of $xi_perp(0)$ that lands far from the fitted $0.35$ would not much damage the transverse asymmetries but would decisively settle how useful $alpha_{K^*}$ can become.","If a right-handed dipole is established this way, one would expect correlated shifts in the $B$ to $K^*$ photon polarization and in other low-$q^2$ $b$ to $s$ lepton-pair observables, which makes a joint fit across channels the natural next step.","The authors' error budget is dominated by a quantity fitted to radiative decay data; a reader could reasonably treat the sub-percent error on $A_T^(1)$ as a statement about the internal consistency of the heavy-quark expansion rather than as a forecast of experimental reach."],"forward_implications":["A measurement of $A_T^(1)$ and $A_T^(2)$ in the low dimuon mass window that departs from $0.9986$ and $-0.043$ would indicate new physics in the electromagnetic dipole operators rather than a hadronic uncertainty.","The sign as well as the magnitude of a right-handed coefficient $C_7^{eff prime}$ is accessible through $A_T^(2)$, which the paper shows responds to both.","The longitudinal and transverse polarization fractions, predicted at $(69 plus or minus 3)$ percent and $(31 plus or minus 3)$ percent, give complementary information on beyond-the-Standard-Model scenarios, with a smaller form-factor penalty than $alpha_{K^*}$.","Because the effects survive even when $C_9$ and $C_{10}$ are allowed to shift by amounts consistent with rare $B$ decay data, the transverse asymmetries remain a usable probe of $O_7^{prime}$ in a less clean new-physics environment."],"supporting_citations":[{"why":"Supplies the heavy-quark and large-energy relations that reduce the seven $B$ to $K^*$ form factors to the two soft functions, the premise the whole cancellation rests on.","marker":"[10]"},{"why":"Provides the next-to-leading order treatment of the form factor relations and the statement that certain ratios receive no $alpha_s$ corrections at leading power.","marker":"[11]"},{"why":"Source of the factorizable and non-factorizable NLL corrections, the light-cone wave functions, and the input parameters and soft form factors used throughout.","marker":"[12]"},{"why":"Provides the angular distribution in the transversity basis from which the spin amplitudes and their relative phases are extracted.","marker":"[2]"},{"why":"Supplies the next-to-next-to-leading logarithmic Wilson coefficients and the $m_c/m_b$ dependence of the charm-loop functions used in the numerical evaluation.","marker":"[19]"},{"why":"Supports the statement that $A_1/V$ and $T_1/T_2$ are free of $alpha_s$ corrections at leading power, which underlies the simple behaviour of the transverse amplitudes.","marker":"[22]"},{"why":"The experimental average of the inclusive $b$ to $s$ photon branching ratio that sets the bound used to restrict $C_7^{eff}$ and $C_7^{eff prime}$ in the new-physics scan.","marker":"[28]"},{"why":"Establishes that at very low dilepton mass $A_T^(2)$ determines the helicity amplitudes of the radiative $B$ to $K^*$ photon decay, a corollary the paper invokes.","marker":"[5]"}],"fun_headline_variants":["B to K* lepton pairs yield a form-factor-free asymmetry of 0.9986","Transverse asymmetries in B to K* decays drop hadronic form factors at leading order","Right-handed currents would shift B to K* transverse asymmetries","SM predicts A_T^(1) = 0.9986 in B to K* lepton-pair decays","Polarization fractions split 69% longitudinal and 31% transverse in B to K*"],"cache_read_input_tokens":0,"weakest_assumption_plain":"The claim rests on the heavy-quark and large-energy relations holding in the low-mass window, and on the soft form factor normalization $xi_perp(0) = 0.35 plus or minus 0.07$ that is fitted to radiative decay data rather than derived; the paper itself notes that $alpha_{K^*}$ roughly doubles its peak if that number moves to $0.24$.","fun_headline_variants_meta":{"raw":{"variants":["B to K* lepton pairs yield a form-factor-free asymmetry of 0.9986","Transverse asymmetries in B to K* decays drop hadronic form factors at leading order","Right-handed currents would shift B to K* transverse asymmetries","SM predicts A_T^(1) = 0.9986 in B to K* lepton-pair decays","Polarization fractions split 69% longitudinal and 31% transverse in B to K*"]},"model":"selfhosted/deepseek-v4.1-flash","effort":"low","attempts":1,"cost_usd":0.0,"raw_usage":{"total_tokens":2910,"prompt_tokens":1296,"completion_tokens":1614,"prompt_tokens_details":null,"completion_tokens_details":{"reasoning_tokens":1510}},"tokens_in":1296,"tokens_out":1614,"duration_ms":29464,"image_pages":[],"temperature":1.0,"reasoning_budget":50,"reasoning_tokens":1510,"transport_provider":"selfhosted","cache_read_input_tokens":0,"cache_creation_input_tokens":0},"cache_creation_input_tokens":0},"created_at":"2026-10-29T16:26:32.051670+00:00","model_set":{"reader":"selfhosted/deepseek-v4.1-flash"},"falsifier":"A measurement of $A_T^(1)$ and $A_T^(2)$ in the window $2m_mu <= M_{mu^+mu^-} <= 2.5$ GeV that lands significantly away from $0.9986$ and $-0.043$ while $b$ to $s$ photon data remain Standard-Model-like would either reveal right-handed dipole contributions or expose the heavy-quark expansion as inadequate at this recoil; conversely, agreement to within the quoted errors would confirm the cancellation.","supporting_citations":[{"cited_title":"O. P` ene, and J.-C. Rayna l, Phys. Rev. D 60, 014001 (1999); Phys. Lett. B 451, 187 (1999). See also M. J. Dugan and B. Grinstein, ibid. 255, 583","cited_arxiv_id":null,"evidence_quote":"Supplies the heavy-quark and large-energy relations that reduce the seven $B$ to $K^*$ form factors to the two soft functions, the premise the whole cancellation rests on."},{"cited_title":"Nucl. Phys. B592, 3","cited_arxiv_id":null,"evidence_quote":"Provides the next-to-leading order treatment of the form factor relations and the statement that certain ratios receive no $alpha_s$ corrections at leading power."},{"cited_title":"Nucl. Phys. B612, 25","cited_arxiv_id":null,"evidence_quote":"Source of the factorizable and non-factorizable NLL corrections, the light-cone wave functions, and the input parameters and soft form factors used throughout."},{"cited_title":null,"cited_arxiv_id":null,"evidence_quote":"Provides the angular distribution in the transversity basis from which the spin amplitudes and their relative phases are extracted."},{"cited_title":"Phys . Lett. B 507, 162 (2001); Phys. Rev. D 65, 074004 (2002); 66, 034009 (2002); A. Ghinculov, T. Hurth, G. Isidori, and Y. P. Yao, Nucl. Phys. B648, 254","cited_arxiv_id":null,"evidence_quote":"Supplies the next-to-next-to-leading logarithmic Wilson coefficients and the $m_c/m_b$ dependence of the charm-loop functions used in the numerical evaluation."},{"cited_title":"Phys. Rev. D 63, 113008","cited_arxiv_id":null,"evidence_quote":"Supports the statement that $A_1/V$ and $T_1/T_2$ are free of $alpha_s$ corrections at leading power, which underlies the simple behaviour of the transverse amplitudes."},{"cited_title":"Determination of the Branching Fraction for Inclusive Decays B -> X_{s} gamma","cited_arxiv_id":"hep-ex/0207076","evidence_quote":"The experimental average of the inclusive $b$ to $s$ photon branching ratio that sets the bound used to restrict $C_7^{eff}$ and $C_7^{eff prime}$ in the new-physics scan."},{"cited_title":"J. High Energy Phys. 0006, 029","cited_arxiv_id":null,"evidence_quote":"Establishes that at very low dilepton mass $A_T^(2)$ determines the helicity amplitudes of the radiative $B$ to $K^*$ photon decay, a corollary the paper invokes."}],"review_version":1}